Fundraising Fox

HeavybitFull Portfolio

119 tracked investments · listed companies and verified rows first

Atlassianatlassian.comNASDAQ: TEAM

Atlassian offers a teamwork platform combining project planning, knowledge management, and AI orchestration tools for teams and their AI agents.

AI & Machine LearningFuture of WorkSaaSSydney, AU

Mike Cannon-Brookes(Co-founder & co-CEO)inScott Farquhar(Co-founder & co-CEO)Jeffrey Walkerin

Co-investorsAccelSilver Lake Partners

PagerDutypagerduty.comin𝕏NYSE: PD

PagerDuty provides a platform for incident response and operations management that enables teams across technical and business functions to respond to critical events in real time.

AI & Machine LearningCloud ComputingDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US

Alex Solomon(Founder/CTO)inDan Alexandru Solomon(Director)Jennifer Tejada(Executive Officer, Director)Steven Gatoff(Executive Officer)

BoardJohn O'Farrell(Director)Ethan Kurzweil(Director)in

Co-investorsAccelAndreessen HorowitzAurumBessemer Venture PartnersBling CapitalCorazon Capital+14 more

Avoavo.appin𝕏✓ verified

Avo is a SaaS analytics governance platform that helps product managers, developers, and data scientists plan, track, and govern product analytics.

Data & InfrastructureDeveloper ToolsEnterprise SoftwareSaaSReykjavík, IS

Stefania Olafsdottir(Founder/CEO)inSölvi Logason(Founder)inSolvi Logason(Founder)in

Co-investorsNotable CapitalY CombinatorBackbone AngelsBrunnur Ventures GPVentureSouqAlleyCorp+7 more

Billforwardbillforward.ioin𝕏✓ verifiedDefunct

Billforward is a subscription billing and recurring revenue platform that enables businesses to manage customer sign-ups, payment collection, and subscription management.

Enterprise SoftwareFintechSaaSSan Francisco, US

Ian Saunders(Founder/CEO)inMark Parry(Founder)inAubone Tennant(Founder/Chief Growth Officer)in

Co-investorsY Combinator

Koslikosli.comin✓ verified

Kosli provides a platform that automates change management, audits, and compliance for DevOps teams working under regulatory and standards requirements.

AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareSaaS

Co-investorsDeutsche BankTranspose Platform Management

Memgraphmemgraph.comin𝕏✓ verified

Memgraph develops a high-performance, in-memory graph database platform designed to process computations on streaming data.

AI & Machine LearningData & InfrastructureEnterprise SoftwareSector AgnosticZagreb, HR

DominikMarko

Co-investorsIn-Q-TelMundi VenturesConnect VenturesM12 (Microsoft's Venture Fund)Acequia Capital (AceCap)Counterview Capital

Memgraphmemgraph.ioin𝕏✓ verified

Memgraph develops a high-performance, in-memory graph database platform focused on graph computations on streaming data.

AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareLondon, GB

DominikMarko

Co-investorsConnect VenturesCounterview CapitalIn-Q-TelMundi VenturesTechstarsAcequia Capital (AceCap)

Multimodelmultimodel.com✓ verified

MultiModel provides an enterprise AI portal that lets teams use models like ChatGPT, Claude, Gemini, and Microsoft Copilot while keeping data inside their own network, with on-device detection and redaction of sensitive data.

AI & Machine LearningCybersecurityEnterprise Software

Co-investorsStanford UniversityWestWave Capital

Sixtasixta.ai✓ verified

SIXTA is an autonomous database reliability engineer (DBRE) for PostgreSQL and MySQL that investigates database incidents, identifies root causes, and recommends or applies fixes within a team's incident and change workflows.

AI & Machine LearningData & InfrastructureDeveloper Tools

Ewen FortuneAndrew MorganLori Gagnon

Co-investorsEncoded Ventures

Userfrontuserfront.comin✓ verified

Userfront provides authentication and user management tooling for developers, including capabilities for deploying AI assistants and enforcing AI use policies.

AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareSaaS

Co-investorsStanford UniversityWestWave CapitalInnovating Capital

Anchor Security, Inc.Oct 2022SEC filingmedium confidence

San Francisco, US

Board seatJesse Robbins· per SEC Form D · $2.5M raise · filed Nov 2022

Colimitcolimit.aiin𝕏Aug 2025SEC filingmedium confidence

Colimit offers a coding agent for formal spec-driven development, guiding users to write formal specifications without prior experience, check specs for logical bugs, and generate code by combining compilers with LLMs.

AI & Machine LearningDeep TechDeveloper ToolsBrooklyn, US

Larry Wayne Diehl, Jr.(Executive Officer, Director)

Board seatJesse Robbins· per SEC Form D · $2.7M raise · filed Sep 2025

Co-investorsVermilion Cliffs Ventures

Devenue Inc.Jun 2026SEC filingmedium confidence

Bengaluru

Krishna Mehra(Director)Piyush Agarwal(Director)Achintya Gupta(Executive Officer, Director)

BoardGaurav Jain(Director)in

Board seatJoseph Ruscio· per SEC Form D · $11.3M raise · filed Jun 2026

Co-investorsAfore Capital

Exceptional, Inc.Nov 2023SEC filingmedium confidence

Wilmington, US

Vanessa Gennarelli(Director, Founder, Chief Operating Officer)Mike McQuaid(Director, Founder, Chief Technology Officer)John Britton(CEO, Director, Founder)

Board seatJoseph Ruscio· per SEC Form D · $3.2M raise · filed Nov 2023

Highly Valued, Inc.Feb 2022SEC filingmedium confidence

Palo Alto, US

Joshua N. Kalderimis(Executive Officer, Director)Richard Konstantin Haase(Executive Officer, Director)

Board seatJoseph Ruscio· per SEC Form D · $3.7M raise · filed Feb 2022

L9 Labs Inc.Dec 2025SEC filingmedium confidence

San Francisco, US

Michael Julian(Executive Officer, Director)Corey Quinn(Director)Daniel Shapiro(Executive Officer)

BoardAndrew McLoughlin(Director)

Board seatJoseph Ruscio· per SEC Form D · $6M raise · filed Dec 2025

Sanitysanity.ioin𝕏Apr 2025

Sanity provides a content operations platform built on a structured content database where JSON documents and code-defined schemas power web, mobile, and AI agent applications through a single API.

Data & InfrastructureDeveloper ToolsSaaSSan Francisco, US

Magnus Hillestad(Executive Officer, Director)Simen Svale Skogsrud(Director)Even Westvang(Director)Raman Kapur(Executive Officer)Christian Flaaten(Executive Officer)Oyvind Rostad(Executive Officer, Director)

Board seatJesse Robbins· per SEC Form D

Co-investorsAlliance VCAlliance VentureCaribbean Export Development AgencyICONIQThreshold VenturesBlue Cloud Ventures+5 more

Streamfoldstreamfold.comNov 2022

Blacksburg, US

Ray Jenkins(Executive Officer, Director)Mike Heffner(Executive Officer, Director)

Board seatJoseph Ruscio· per SEC Form D

Co-investorsUncork CapitalEssence Venture Capital

<UNKNOWN>

Developer-first customer and product analytics

Co-investorsCyberAgent CapitalKapor CapitalPrimary Venture Partners

a music appovertone.pro𝕏
Anchor
Apiaryapiary.io𝕏

Apiary provides an API design and documentation platform that enables developers to collaboratively design, prototype, document, and test APIs.

Cloud ComputingDeveloper Tools

Co-investorsReflex CapitalCredo Ventures

Apolloapollographql.comin𝕏

Apollo provides a GraphQL-based API orchestration platform that unifies APIs and data sources for backend teams and frontend applications.

Data & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US

Geoff Schmidt(Founder/CEO)inmatt debergalis(Founder/CTO)Nick Martin(Founder/CTO)

Co-investorsAndreessen HorowitzDCVC (Data Collective)MatrixNext47Neythri Futures FundWebb Investment Network+2 more

Apollo Graphql
Apportableapportable.comAcquired

Apportable provides tools for developers to compile Objective-C and C++ applications to Android, enabling them to publish to Android without rewriting code in Java.

Data & InfrastructureEnterprise SoftwareSan Francisco, US

Co-investorsY Combinator

Asertoaserto.com

Aserto provides a fine-grained, resource-level authorization platform that developers integrate into applications via SDKs, middleware, and gRPC/REST APIs, with a central control plane and local authorizers for real-time access decisions.

Cloud ComputingCybersecurityDeveloper Tools

Beginbegin.com
Blockdaemonblockdaemon.comin𝕏

Blockdaemon provides blockchain infrastructure services including staking, node deployment, APIs, and wallet management across 60+ protocols for financial institutions and developers.

Crypto & Web3Data & InfrastructureEnergyEnterprise SoftwareFintechLos Angeles, US

Konstantin Richter(CEO and Founder)in

BoardEd Sim(Director)inGil Beyda(Director)in

Co-investors10SQ Capital (TenSquared)Aurum Venture PartnersBaroda Venturesboldstart venturesBorderless VentureComcast Ventures+18 more

Brace
Burklandburklandassociates.com

Burkland provides outsourced finance and HR services for venture-backed startups, including fractional CFOs, accounting, bookkeeping, tax and compliance, R&D tax credits, financial modeling, payroll, and people operations.

Enterprise SoftwareFintechSaaS

Jeff Burkland(Founder)in

Circlecicircleci.comin

CircleCI develops continuous integration and continuous delivery (CI/CD) tooling that helps software development and developer-experience teams build, test, and ship code faster and more reliably.

Cloud ComputingDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US

Jim Rose(Chief Executive Officer)inRob Zuber(Chief Technology Officer)Chitra Balasubramanian(Chief Financial Officer)Judson Griffin(Chief Revenue Officer)June Ko(Chief Legal & People Officer)Blake Buisson(Chief Marketing Officer)

Co-investors500 GlobalDCVC (Data Collective)Draper AssociatesIVP (Institutional Venture Partners)NextEquity PartnersSapphire Ventures+5 more

Citus Datacitusdata.comin𝕏Acquired

Citus is a Postgres extension that enables horizontal scaling of databases by distributing data and queries across multiple nodes.

Data & InfrastructureDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US

Sumedh Pathak(Founder/Engineer)

Co-investorsBling CapitalBullpen CapitalDCVC (Data Collective)Rainfall VenturesStreamlined VenturesY Combinator+1 more

Cloudconnectcloudconnect.com
Codenvycodenvy.comacquired by Red Hat

Cloud ComputingDeveloper Tools

Co-investorsToba CapitalXAnge

Contentful
Continuecontinue.devin𝕏Acquired

Continue was an AI-powered developer coding agent distributed as open-source software.

AI & Machine LearningDeveloper ToolsEnterprise SoftwareSan Francisco, US

Ty Dunn(Founder)inNate Sesti(Founder)in

Co-investorsY Combinator

Convoxconvox.comin𝕏Aug 2015Acquired

Convox provides a platform for deploying and managing cloud-native applications across multiple cloud providers including AWS, Google Cloud, and Azure.

Cloud ComputingData & InfrastructureDeveloper ToolsEnterprise SoftwareAtlanta, US

David Dollar(Founder/CEO)inNoah Zoschke(Founder/CTO)inMatt Manning(Founder)in

Co-investorsCurious CapitalGarage CapitalY Combinator

Crunchy Datacrunchydata.comin𝕏

Crunchy Data provides a certified, enterprise-grade distribution of the open source PostgreSQL relational database, bundled with security, high availability, backup/restore, monitoring, and administration tooling.

Cloud ComputingData & InfrastructureDeveloper ToolsEnterprise Software

Co-investorsAlsop Louie Partners

Data & Security Earlytrustar.coin𝕏

TruSTAR provides intelligence management technology that automates data orchestration to centralize and normalize security intelligence across security operations.

CybersecurityData & InfrastructureEnterprise SoftwareSan Francisco, US

Paul Kurtz(Executive Officer, Director, Promoter)

BoardPatrick Coughlin(Executive Officer, Promoter)

Co-investorsAcrew CapitalAkkadian VenturesAspect VenturesAugust CapitalCRV (Charles River Ventures)Intrepid Growth Partners+6 more

Develocitydevelocity.ai

Develocity, from the makers of the Gradle Build Tool, is a platform that collects build, test, and dependency signals across repositories, CI, and toolchains and turns them into context used to govern and speed up software delivery.

AI & Machine LearningDeveloper ToolsEnterprise Software

developer-first customer and product analytics

Developer-first customer and product analytics platform

Divebell, Inc.divebell.com

Co-investorsK9 Ventures

Duckbillgetduckbill.comFeb 2026 · $7.8M

Duckbill provides an execution layer that connects AI agents to human labor pools, triaging, routing, executing, and quality-checking real-world tasks such as phone calls, form submissions, and in-person errands that require a human in the loop.

AI & Machine LearningConsumerEnterprise SoftwareFuture of WorkSaaS

Meghan Verena Joyce(Founder)in

Co-investorsForerunner VenturesInspired CapitalEncoded VenturesG9 VenturesGeneral CatalystGreycroft+3 more

Duckbillduckbillhq.comin𝕏

Duckbill offers Skyway, a contract-aware financial planning platform for tracking, forecasting, and negotiating spend on AI compute and cloud services across model labs, inference APIs, neoclouds, coding assistants, and hyperscalers.

AI & Machine LearningCloud ComputingSaaS

Co-investorsEncoded VenturesForerunner VenturesG9 VenturesGeneral CatalystGreycroftInspired Capital+2 more

Eventsluma.com𝕏

Luma provides a platform for creating event pages, sending invitations, and selling tickets for events.

SaaS

Victor Pontis(Founder)in

Co-investorsAllen Institute for AI (AI2) IncubatorAmplify PartnersBerkley Center for EntrepreneurshipBethnal Green VenturesCedar CapitalEIT Urban Mobility Accelerator+13 more

Global Global Globallocalstack.cloudin

LocalStack for Snowflake is a local emulator of the Snowflake data platform, letting developers run and test Snowflake features such as tables, tasks, streams, stored procedures, and API integrations on their own machines.

Cloud ComputingData & InfrastructureDeveloper ToolsSaaS

Co-investorsNotable Capital

Gradle
Gretagreta.io
Groundcovergroundcover.cominJul 2026 · $100M

groundcover is a full-stack observability platform that monitors cloud infrastructure, applications, and AI workloads using an eBPF sensor that collects telemetry with no code changes.

AI & Machine LearningCloud ComputingDeveloper ToolsTel Aviv, IL

Shahar Azulay(Founder)

Co-investorsAngular VenturesJibe VenturesMorgan StanleyZeev Ventures

Halphalp.comin

Jira Service Management is a ticketing and help desk platform that enables teams to manage support requests, automate workflows, and track performance across multiple channels including email, chat, and portals.

Developer ToolsEnterprise SoftwareFuture of WorkHR TechSaaSBoulder, US

Co-investorsAccelAccess Venture PartnersFirstMile VenturesKokopelli CapitalMatchstick VenturesNext Frontier Capital+3 more

Ink & Switchinkandswitch.com

Ink & Switch is an independent research lab exploring software architecture, local-first collaboration, and dynamic tools for creative work, with a focus on returning data ownership to users.

Data & InfrastructureDeep TechDeveloper Tools

Co-investorsBlueYard Capital

Jelijeli.io

Jeli provides incident analysis and collaborative learning tools that help engineering and operations teams review incidents, build timelines, and identify patterns to improve reliability.

Developer ToolsEnterprise SoftwareSaaS

Co-investorsboldstart ventures

Keen IOkeen.ioin𝕏

Keen is a fully managed event streaming platform that enables developers to collect, store, and analyze real-time data using APIs built on Apache Kafka, Storm, and Cassandra.

Cloud ComputingData & InfrastructureDeveloper ToolsSan Antonio, US

Dan KadorKyle WildRyan Spraetz

Co-investors500 GlobalScaleworksStreamlined VenturesTechstarsUpslope VenturesPelion Venture Partners+1 more

Keenio
Kloudlesskloudless.com

Co-investorsAspect VenturesBow CapitalOwl CapitalAmino Capital

Kodowa
Kubiyakubiya.ai

San Jose, US

Amit Eyal Govrin(Founder)

Co-investorsHyperwise Ventures

LaunchDarklylaunchdarkly.comin𝕏

LaunchDarkly provides a feature management platform that enables development teams to release code changes safely through feature flags, detect production issues in real time, and run experiments without redeploying applications.

AI & Machine LearningCloud ComputingDeveloper ToolsSaaSOakland, US

Edith Harbaugh(Co-founder; Chief Executive Officer, Executive Chair)inJohn Kodumal(Co-founder)in

Co-investors500 GlobalAlchemist AcceleratorBessemer Venture PartnersCervinFirebolt Ventures Management Company, LlcNewView Capital+12 more

Libratolibrato.comacquired by SolarWinds

Cloud ComputingDeveloper ToolsSaaS

Co-investorsBaseline VenturesCowboy Ventures

Lightsteplightstep.com

Acquired by ServiceNow; investment from prior firm

Co-investorsAmplify PartnersCowboy Ventures

Linearlinear.app𝕏

Linear is a project and issue tracking tool for software development teams, offering features such as team documents, code diffs and reviews, an AI agent, and integrations with tools like GitHub, Slack, and Figma.

Developer ToolsEnterprise SoftwareFuture of WorkSaaSSan Francisco, US

Karri Saarinen(Co-founder, CEO)inJori Lallo(Co-founder, CPO)inTuomas Artman(Co-founder, CTO)in

Co-investorsDesigner FundIndie.vcSeven Seven Six01 AdvisorsAccelIndex Ventures+3 more

Local First Dev Communitylocalfirstweb.dev

A curated directory and community resource hub for the local-first software ecosystem, aggregating tools, articles, videos, and meetups.

Developer ToolsMedia & Entertainment

Localfirstlocalfirst.fm

localfirst.fm is a podcast focused on local-first software development, featuring interviews with engineers, researchers, and founders working on sync engines, CRDTs, and offline-capable applications.

Developer ToolsMedia & Entertainment

Localstack
Lunchbadgerlunchbadger.com
Measure What Matterswhatmatters.com

What Matters offers educational resources on the OKR (Objectives and Key Results) goal-setting methodology, including the book "Measure What Matters" by John Doerr and an accompanying online course.

EdTechFuture of WorkMedia & Entertainment

Metristmetrist.io
MightyMeld
Milestonemstone.aiin𝕏

Milestone is an analytics platform that tracks AI spend, coding agents, software delivery, and custom KPIs by grounding answers in a company's engineering data.

AI & Machine LearningDeveloper ToolsEnterprise Software

Liad Elidan(Founder)in

Co-investorsPreston-Werner VenturesAtlassian Ventures

Mobotmobot.ioin𝕏

Mobot provides infrastructure-as-a-service that combines human expertise with mechanical robots to automate testing and development processes for engineering teams building software and hardware products.

AI & Machine LearningDeveloper ToolsEnterprise SoftwareHardwareRoboticsSaaSNew York City, US

Eden Full Goh(Founder)in

Co-investorsCota CapitalMPG FundY Combinator

Modiqomodiqo.ai

modiqo makes rote, a developer tool that captures the successful path of an AI agent run and compiles it into a deterministic, reusable flow, reducing token usage on subsequent runs by around 98%.

AI & Machine LearningDeveloper ToolsSaaS

Moesifmoesif.com𝕏

Moesif provides an API analytics and monetization platform for teams building API and AI products, offering usage-based billing on API calls and LLM token counts, payload debugging, quota enforcement, and usage monitoring.

AI & Machine LearningData & InfrastructureDeveloper ToolsSaaSSan Francisco, US

Derric GIlling(CEO)Derric Gilling(Founder)in

Co-investorsFresco CapitalMerus CapitalSilicon BadiaTest Kitchen CapitalCraft VenturesLombardstreet Ventures

Moonchildmoonchild.aiin𝕏

Moonchild is an AI design tool that converts product requirement documents (PRDs) into production-ready UI screens using a company's existing design system, and exports designs to code via an MCP connection to tools like Claude Code and Cursor.

AI & Machine LearningDeveloper ToolsSaaS

Museadamwiggins.com𝕏

Personal site of Adam Wiggins describing his mission and projects related to computing and creativity tools.

Musical Aiwearemusical.ai

Musical AI operates a licensing and attribution platform that lets rights holders define what their music catalog (sound recording, composition, and voice) is cleared to do with AI, while AI companies use it to attribute and license generated outputs.

AI & Machine LearningMedia & EntertainmentSaaS

Muxmux.comin𝕏

Mux provides video infrastructure and API services for developers building video applications.

Cloud ComputingData & InfrastructureDeveloper ToolsEnterprise SoftwareMedia & EntertainmentSan Francisco, US

Jon Dahl(Founder/CEO)inAdam Brown(Founder)inSteve Heffernan(Founder/Head of Product)inMatthew McClure(Founder)in

BoardDaniel Levine(Director)inKristina Shen(Director)in

Co-investorsAccelAdvancit CapitalAndreessen HorowitzAurum Venture PartnersCoatue ManagementHubSpot Ventures+9 more

Netlifynetlify.comin𝕏

Netlify is a platform for building, deploying, and scaling modern web applications, serving millions of developers and thousands of enterprises.

AI & Machine LearningCloud ComputingDeveloper ToolsSaaSSan Francisco, US

Mathias Biilmann(Co-founder & CEO)Christian Bach(Co-founder, Chief Strategy and Creative Officer)

Co-investorsAndreessen HorowitzBessemer Venture PartnersDesigner FundKleiner PerkinsMenlo VenturesBloomberg Beta+6 more

Ninetailedninetailed.ioin𝕏Jul 2021acquired by Contentful

Ninetailed offers a personalization platform that enables web teams to create and deliver tailored content experiences without developer support.

AdTechCloud ComputingDeveloper ToolsEnterprise SoftwareMarketing TechSaaSBerlin, DE

Sascha Konietzke(Executive Officer, Director, Promoter)Paolo Negri(Executive Officer, Director, Promoter)Andy Kaiser(Co-founder and CEO; later VP Product at Contentful)Alexander Braunreuther(Co-founder)Steve Sloan(Executive Officer, Director)Margo M Smith(Executive Officer)

Co-investorsBalderton CapitalGaia VenturesGrand VenturesMosaic VenturesOMERS VenturesSapphire Ventures+11 more

Nodesourcenodesource.comin𝕏

NodeSource provides Node.js runtime distribution and application management services for enterprise organizations.

AI & Machine LearningCloud ComputingDeveloper ToolsEnterprise SoftwareSan Francisco, US

Joseph McCann(Executive Officer, Director, Promoter)Daniel Shaw(Executive Officer, Director, Promoter)Tom Burke(Executive Officer)

BoardRaju Rishi(Director)inEric Chin(Director)in

Co-investorsResolute VenturesCrosslink CapitalRRE Ventures

Opseeopsee.com
Orbitorbit.love
OverOpsoverops.comin𝕏

OverOps provides a reliability platform that lets engineering teams define SLOs, SLIs, and error budgets across multiple observability data sources and apply reliability guardrails in CI/CD pipelines.

Cloud ComputingDeveloper ToolsSaaSSan Francisco, US

Tal Weiss(Executive Officer, Director)

BoardArif Janomohamed(Director)Venky Ganesan(Director)inAvery More(Director)inDavid Scott(Director)

Co-investorsLightspeed Venture PartnersMenlo Ventures

Pantheon
Particleparticle.io

Particle provides edge-to-cloud infrastructure for connected devices, including over-the-air software and model updates, abstracted wireless connectivity (LTE, 5G, Wi-Fi, satellite, LoRaWAN), real-time data automation, and a management console.

Cloud ComputingDeveloper ToolsIoT

Zach Supalla(Founder)in

Co-investorsBonfire VenturesCounterpart VenturesEnergy Impact PartnersGraph VenturesGreen Meadow VenturesQualcomm Ventures+3 more

Partnerpagepartnerpage.io

PartnerPage provides a no-code tool for building and maintaining partner directories that companies host on their own domain, letting partners create and manage their own listings and capture referrals.

Marketing TechSaaSSales Tech

Mario Tarabbia(Founder)in

Prismaprisma.io

Prisma builds an ORM and database tools for developers to simplify database workflows across application development, deployment, and scaling.

Cloud ComputingData & InfrastructureDeveloper Tools

Co-investorsAmplify PartnersKleiner PerkinsMango CapitalPreston-Werner Ventures

Pusher Ltdpusher.comin𝕏

Pusher provides hosted, bi-directional APIs and messaging infrastructure that developers use to add realtime features such as live data updates, chat, notifications, and push notifications to their applications.

Data & InfrastructureDeveloper ToolsSaaS

Co-investorsBalderton CapitalFirestartrMI VenturesSaaS Capital

Radarradar.io

Radar provides SDKs, APIs, and infrastructure for location tracking, geofencing, mapping, geocoding, search, and routing, used for fraud prevention, location verification, delivery tracking, and marketing across industries.

Data & InfrastructureDeveloper ToolsEnterprise Software

Nick Patrick(Founder)inCoby Berman(Founder)in

Co-investorsAccelExpaFuel CapitalWing

Rainforestrainforestqa.comin𝕏

Rainforest QA is an AI-powered, no-code testing platform that automates quality assurance for software development teams.

AI & Machine LearningDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US

Fred Stevens-Smith(Founder/CEO)inRussell Smith(Founder / CTO)in

Co-investorsY CombinatorBessemer Venture PartnersBonfire VenturesCrosslink CapitalFundersClubStorm Ventures+3 more

Rainforestqa
ReadMereadme.comin𝕏

ReadMe is a developer hub that provides API documentation, monitoring, and developer engagement tools for API-first companies.

Developer ToolsEnterprise SoftwareSaaSNew York City, US

Gregory Koberger(Founder)in

Co-investorsGreat Oaks Venture CapitalY CombinatorAccel

Reccedatarecce.ioin

Recce is a data validation tool that runs schema diffs, data diffs, row counts, and downstream impact analysis on pull requests so data teams can review and QA changes before merging.

Data & InfrastructureDeveloper ToolsSaaS

Co-investorsBrighter CapitalVertex Ventures

Reduce
Reo
Reo Dev SaaSreo.devin𝕏

Reo.dev is a go-to-market platform that uses AI agents and technical buying signals from over 50 sources to help sales teams identify in-market accounts, map technical profiles to economic buyers, and run personalized outreach.

AI & Machine LearningSaaSSales Tech

Achintya Gupta(Founder)inPiyush Agarwal(Founder)in

Co-investorsFoster VenturesIndia QuotientpeerchequeVeridical Ventures

Replicatereplicate.comin𝕏Jun 2023Acquired

Replicate builds tools that make AI models accessible to software engineers through simple APIs and abstractions, similar to standard software libraries.

AI & Machine LearningCloud ComputingData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US

Ben Firshman(Founder)inAndreas Jansson(Founder)in

BoardMATT BORNSTEIN(Director)in

Co-investorsAIX VenturesAndreessen HorowitzY CombinatorSequoia Capital

Replicatedreplicated.comin𝕏

Replicated provides a container-based platform for software vendors to deploy cloud-native applications in customer environments.

Cloud ComputingDeveloper ToolsEnterprise Software

Co-investorsAmplify Partnersboldstart venturesFounder CollectiveMucker CapitalPreston-Werner VenturesTop Corner Capital+4 more

Runscoperunscope.comMar 2014

Runscope provides API monitoring and testing tools that detect API failures before they impact end users.

Cloud ComputingDeveloper ToolsSan Francisco, US

Frank Stratton(Director)John Sheehan(Executive Officer, Director)Steve Herrod(Director)

Co-investorsStreamlined VenturesTrue VenturesAndreessen HorowitzGeneral Catalyst

San Francisco, CApantheon.ioin𝕏

Pantheon provides a platform that applies DevOps principles to web applications, enabling digital marketing teams and developers to accelerate the development, testing, and deployment of website changes.

Cloud ComputingDeveloper ToolsEnterprise SoftwareMarketing TechSaaS

Josh Koenig(Founder)in

Co-investorsFloodgateFoundryOpenView Venture PartnersSoftBank Vision FundNew Enterprise Associates (NEA)NVIDIA+1 more

secure software delivery platform
Secure software delivery platform (stealth)

Stealth secure software delivery platform

Serverlessserverless.com

Serverless provides the Serverless Framework, an open-source tool for developing, deploying, and monitoring APIs, scheduled tasks, workflows, and event-driven applications on AWS Lambda.

Cloud ComputingDeveloper ToolsSaaS

Austen Collins(Founder)in

Co-investorsLightspeed Venture PartnersTrinity Ventures

Shipyardshipyard.buildin𝕏

Shipyard is an ephemeral environment platform that automatically spins up full-stack, isolated copies of an application for every pull request or branch, hydrated with fresh data.

Cloud ComputingDeveloper ToolsSaaS

Co-investorsContour Venture PartnersWork-Bench

Snyksnyk.ioin𝕏

Snyk is a developer-focused security platform that identifies and fixes vulnerabilities in code, dependencies, containers, and cloud infrastructure using AI-powered analysis.

AI & Machine LearningCybersecurityDeveloper ToolsBoston, US

Guy Podjarny(Director)Peter McKay(Executive Officer, Director)inStephanie Dominy(Executive Officer)

BoardPhilippe Botteri(Director)inMatthew Weigand(Director)inKen Fox(Director)

Co-investors2050 CapitalAccelAlkeon InnovationAmity VenturesAmplify PartnersAtlassian Ventures+19 more

Stack Overflowstackoverflowbusiness.comin𝕏

Stack Internal is a knowledge management platform that captures, structures, and validates enterprise knowledge to provide trusted context for AI agents and human teams.

AI & Machine LearningDeveloper ToolsEnterprise Software

Joel Spolsky(Founder)in

Co-investorsAndreessen HorowitzElevation CapitalFoster VenturesIndia Quotient

stealth
Stripestripe.comin𝕏

Stripe provides financial infrastructure for businesses to accept payments, offer financial services, and implement custom revenue models across international markets in 135+ currencies.

FintechSaaSSan Francisco, US

John Collison(Co-founder & President)inPatrick Collison(Co-founder & CEO)inWilliam Gaybrick(Executive Officer)Greg Brockman(Founding Engineer, then first CTO)inDaniela Amodei(Early employee — Risk Manager)inBelen Rodriguez

Co-investors500 GlobalAglae VenturesAir Street CapitalAlkeon InnovationAndreessen HorowitzBase Partners+59 more

sync enginedev.to𝕏

DEV (dev.to) is an online community and publishing platform where software developers write and share blog posts, tutorials, and educational content.

Developer ToolsMedia & EntertainmentSocial

Peter Frankin

Co-investorsWorklife VenturesMayfield FundThe Fund

Tailscaletailscale.comin𝕏Apr 2025 · $230M

Tailscale provides secure connectivity infrastructure.

Cloud ComputingCybersecurityDeveloper ToolsToronto, CA

Avery Pennarun(Founder & CEO)inDavid Crawshaw(Founder)inBrad Fitzpatrick(Founder)

Co-investorsAccelAvenir Growth CapitalCRV (Charles River Ventures)Cyber Mentor FundFlex Capital PartnersInsight Partners+6 more

Testimtestim.ioin𝕏

Tricentis Testim provides AI-powered test automation for custom web, mobile, and Salesforce applications, letting development and QA teams author tests using natural language and self-healing AI/ML locators.

AI & Machine LearningDeveloper ToolsSaaS

Oren Rubin(Founder)in

Co-investorsLightspeed Venture PartnersMeron CapitalSpider CapitalTSVCSignalFire

Timekittimekit.io

Timekit provides an online scheduling platform offered through a web app and REST API, letting businesses set availability and booking rules, embed booking widgets, and sync events to calendars.

Developer ToolsEnterprise SoftwareSaaS

Tonic
Treasuretreasuredata.comin

Treasure Data offers the Personalization AI Suite, an AI-native tool that uses unified customer data and real-time signals to automatically personalize web content, offers, and experiences for individual customers.

AI & Machine LearningData & InfrastructureMarketing Tech

Hiro Yoshikawa(Founder)in

Co-investorsCarbide VenturesHaymaker VenturesSoftBank Vision Fund

Treasure Data
Unikraftunikraft.com

Unikraft provides a compute platform that transforms Dockerfiles into minimal Linux-based microVM images offering VM-grade isolation, sub-10ms cold starts, and high instance density per server.

Cloud ComputingCybersecurityDeveloper Tools

Co-investorsFly VenturesMango Capital

United States United States United Statestonic.aiin

Tonic Structural is a test data management and data de-identification platform that detects PII/PHI and applies masking, tokenization, and synthesis to structured and semi-structured data while preserving referential integrity for development and testing.

AI & Machine LearningCybersecurityData & InfrastructureDeveloper ToolsSan Francisco, US

Andrew Colombi(Founder)in

Co-investorsNotable CapitalTau VenturesBloomberg BetaXfund

Vibrant Labsvibrantlabs.comin𝕏

Vibrant Labs builds tools for teams to develop AI systems that function effectively in real-world applications.

AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US

Jithin James(Founder)inShahul ES(Founder)in

Co-investorsY Combinator

Webflowwebflow.comin𝕏

Webflow is a visual content management system and web design platform that enables creative teams to build, design, and publish brand-forward websites without heavy reliance on developers.

Developer ToolsEnterprise SoftwareMarketing TechSaaSSan Francisco, US

Sergie Magdalin(Co-founder & Design Fellow)inVlad Magdalin(Co-founder & Chief Innovation Officer)inBryant Chou(Co-founder)inLinda Tong(Chief Executive Officer)in

Co-investorsAccelADQAltra VentureAmino CapitalBeyond CapitalBlack Angel Group+26 more

Zencoderzencoder.comin𝕏Acquired

Zencoder is a cloud video encoding platform that transcodes and delivers video content at scale for creators and developers.

Cloud ComputingCreator EconomyData & InfrastructureEnterprise SoftwareMedia & EntertainmentSocialSan Francisco, US

Jon Dahl(Founder/CEO)inSteve Heffernan(Founder/Head of Product Design & Marketing)inBrandon Arbini(Founder/Vice President of Product Development and Engineering)in

Co-investors500 GlobalY CombinatorLowercase CapitalSV Angel

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.