Preston-Werner Ventures β Full Portfolio
76 tracked investments Β· listed companies and verified rows first
BETA Technologies develops electric aircraft (including the ALIA eVTOL) and associated charging infrastructure for sustainable aviation.
CleantechDefense TechHardwareMobility & TransportationBurlington, US
Kyle Clark(CEO)inSean Donovan(Executive Officer)inHerman Cueto(Executive Officer)in
BoardCharles Davis(Director)Mike Stone(Director)Francesco Capretti(Director)
Co-investorsStone PointChaifetz GroupUP PartnersVermont Center for Emerging Technologies (VCET)
Retrace is an open-source record-replay tool and AI debugger for Python that captures failed pytest and CI runs as replayable .retrace artifacts, letting an AI debug backwards from real runtime values to the root cause.
AI & Machine LearningDeveloper ToolsSaaS
Aalo develops advanced nuclear reactor technology aimed at producing electricity at under 3 cents per kilowatt-hour.
Climate TechDeep TechEnergyHardware
Matt(Co-founder)inYasir(Co-founder)in
Co-investorsAlumni VenturesBasecamp FundBlack FlagBrave CapitalCrosscut VenturesDash VC+24 more
Aera Farms develops a soil-based farming appliance for home use that combines aeroponics technology to enable households to grow fresh produce year-round with minimal water and energy consumption.
AgTechFoodTechHardware
Aerodome, part of Flock Safety, provides a Drone as First Responder (DFR) system that remotely deploys docked drones to 911 calls, license-plate hits, and gunshot alerts, streaming live HD, thermal, and night-vision video to first responders and dispatch.
Defense TechGovTechHardwareRobotics
Co-investors2048 VenturesAndreessen HorowitzAntiCRV (Charles River Ventures)
Poolside builds open-weight foundation models and agentic coding models, including the Laguna family, along with the systems and infrastructure needed to train, refine, and improve these models.
AI & Machine LearningDeveloper Tools
Jason Warner(Founder & CEO)inEiso Kant(Founder)
Co-investors7GC & CoAbstraction CapitalAir Street CapitalB Capital GroupB4 CapitalBain Capital Ventures+24 more
Alinia develops AI guardrails for financial enterprises, specifically Investment Guard, a compliance system that detects unqualified investment advice in AI assistants under MiFID2 and EU financial regulations.
AI & Machine LearningCybersecurityEnterprise SoftwareFintech
Ariadna
Co-investorsKfundMouro Capital
Claude is Anthropic's conversational AI assistant, available at claude.ai on web, desktop and mobile plus a developer API.
Co-investorsM13Norwest Venture Partners
Astranis manufactures small, high-powered geosynchronous satellites equipped with advanced digital processing technology for global telecommunications and connectivity services.
Advanced ManufacturingDeep TechHardwareSpace TechSan Francisco, US
John Gedmark(Founder/CEO)inRyan McLinko(Founder/CTO)in
Co-investorsAndreessen HorowitzBlack FlagBoxGroupCantos VenturesCherubic VenturesCommonweal Ventures+37 more
Atuin is a developer tool that syncs, searches, and backs up shell history across machines with end-to-end encryption, and includes an integrated AI assistant accessible directly from the terminal prompt.
Developer Tools
Ellie Huxtable(Founder)in
Co-investorsGenerationshipTranspose Platform Management
BuildPass builds a construction technology platform focused on safety management, serving builders and subcontractors.
AI & Machine LearningConstruction TechSaaS
Matt PerrottinAaron VanstoninCaylie McDonaldin
Co-investorsMighty PartnersCarthona CapitalHorizonMassive Tech VenturesRecursive Ventures
Cleanlab develops machine learning tools for data quality and model improvement, serving enterprises and ML practitioners across industries.
AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSaaS
Curtis Northcutt(Founder)inJonas Mueller(Co-founder)inAnish AthalyeinAnishathalye(Co-founder)Ulyana Tkachenko(Co-founder)in
Co-investorsMenlo VenturesSamsung NextTq Ventures LlcAME Cloud VenturesBain Capital VenturesDatabricks Ventures+1 more
Clerk provides user management and authentication infrastructure for developers, enabling quick integration of complete user management systems into applications.
Developer ToolsEnterprise SoftwareSaaSSan Francisco, US
Braden Sidoti(Executive Officer, Director)inColin Sidoti(Executive Officer, Director)in
BoardShvetank Jain(Director)Karan Mehandru(Director)in
Co-investorsAndreessen HorowitzCRV (Charles River Ventures)Madrona Venture GroupMenlo VenturesFathom CapitalGeorgian+4 more
Command Code is an AI-powered coding assistant that helps developers write code faster, review code more quickly, and reduce bugs.
AI & Machine LearningDeveloper ToolsSaaS
Ahmad Awais(Founder & CEO)in
Co-investorsAltaIR CapitalAlumni VenturesBanyan VenturesFifthFirestreak Ventures
Commonwealth Fusion Systems develops commercial fusion power plants using high-temperature superconducting magnet technology to provide grid-scale energy.
CleantechClimate TechDeep TechEnergyCambridge, US
Brandon Sorbom(Founder)inRobert Mumgaard(Executive Officer, Director)inDaniel Brunner(Executive Officer)inBob Mumgaard(Founder)in
BoardMassimiliano Pieri(Director)Katie Rae(Director)in
Co-investorsAdvection Growth CapitalArmada Investment AGBay Bridge Ventures ClimateBeni Venture CapitalBrainstorm VenturesBreakthrough Energy Ventures+39 more
Commutator Studios offers a tool that automatically optimizes quantum applications by finding the best execution parameters across different quantum computers, reducing errors and improving accuracy, reliability, and performance.
Deep TechDeveloper ToolsQuantum Computing
Co-investorsbacktrace capitalQAI Ventures
Cursor is a code editor that enables teams to manage and distribute Model Context Protocol (MCP) servers and integrations through team marketplaces, with features for organization-level access control and cloud agent integration.
AI & Machine LearningDeveloper ToolsSaaS
Sualeh Asif(Cofounder)Arvid Lunnemark(Co-founder)inAman Sanger(Cofounder)inMicheal Truell(Cofounder)Michael Truell(Co-founder & CEO)in
Co-investorsAccelAndreessen HorowitzAviso VenturesBoxGroupCoatue ManagementCRV (Charles River Ventures)+10 more
Earthmover builds a cloud data platform for exploring, visualizing, analyzing, and sharing large-scale scientific datasets, with a focus on climate and Earth science data.
AI & Machine LearningClimate TechCloud ComputingData & InfrastructureNew York, US
Ryan Abernathey(Co-founder)inJoe Hamman(Co-founder)inTony Liu(Director)
Elicit is an AI-powered research assistant that helps users discover, analyze, and synthesize scientific literature and research findings.
AI & Machine LearningEdTechEnterprise SoftwareSaaSOakland, US
Andreas StuhlmΓΌller(Cofounder & CEO)inJungwon Byun(Cofounder & COO)inAdam Heneghan(Executive Officer)in
BoardKevin Willer(Director)John Elton(Director)John McGee(Director)
Co-investorsFifty YearsFootworkMythos Ventures Management, LlcWinklevoss CapitalBasis Set Ventures
Fal provides fast inference for generative AI models, particularly for image and video generation tasks like SDXL and Whisper.
AI & Machine LearningCloud ComputingCreator EconomyDeveloper ToolsSan Francisco, US
Gorkem Yurtseven(Founder & CEO)inBurkay Gur(Founder)in
BoardSteve Jang(Director)inJennifer Li(Director)inGlenn Solomon(Director)in
Co-investors500 Emerging EuropeAlkeon InnovationAndreessen HorowitzBessemer Venture PartnersCortical Venturese2vc+14 more
Flock Safety provides a platform that connects neighborhoods, businesses, and law enforcement to share verified incident information and enable coordinated emergency response based on shared evidence.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareGovTechHardwareSaaSAtlanta, US
Garrett Langley(Founder/CEO)inMatt Feury(Founder/CTO)in
Co-investorsA*Andreessen HorowitzAnorak VenturesBedrockCoatue ManagementCRV (Charles River Ventures)+14 more
Flux develops a browser-based tool for hardware design collaboration that enables teams to work together efficiently.
AI & Machine LearningDeveloper ToolsHardwareSan Francisco, US
Matthias Wagner(Founder)inLance Cassidy(Founder)in
Co-investors8VCBehind Genius VenturesOutsidersEssence Venture Capital
Freeplay provides a platform for software product development teams to build and maintain generative AI products using best practices in experimentation, iteration, and data management.
AI & Machine LearningDeveloper ToolsEnterprise Software
Co-investorsNext Frontier CapitalRenegade PartnersVermilion Cliffs Ventures
Kiril Videlov(Founder)in
Co-investorsAndreessen HorowitzFly VenturesJ12 Ventures
Graphite is an AI-powered code review platform that helps development teams ship code faster through automated reviews, collaborative features, and a unified PR workflow integrated with GitHub.
AI & Machine LearningDeveloper Tools
Merrill Lutsky(Founder)inGreg Foster(Founder)in
Co-investorsAccelAndreessen HorowitzCorrelation VenturesHomebrewMenlo VenturesGeneral Partnership
Impossible Foods produces plant-based meat alternatives, including beef, pork, chicken, and sausage products designed to replicate the taste, nutrition, and cooking properties of conventional animal meat.
ConsumerFoodTechHealthtechRedwood City, US
Pat Brown(Founder & CEO)inDavid Lee(Executive Officer)inPeter McGuinnessin
BoardBart Swanson(Director)inSamir Kaul(Director)inTai Ronnen(Director)
Co-investorsAllied Venture PartnersBlue Horizon CorporationCoatue ManagementCollaborative FundContinental Grain CompanyCPT Capital+18 more
Inference Capital is an investment firm representing permanent capital and allocators across private markets, providing advisory and direct allocation services.
Fintech
Co-investorsInception Fund
Inngest is an execution layer for agents and workflows that helps engineers build and optimize event-driven workflows without manual retry logic or queue management.
AI & Machine LearningCloud ComputingDeveloper ToolsRoyal Oak, US
Tony Holdstock-Brown(CEO & Founder)Dan Farrelly(CTO & Founder)in
BoardJamin Ball(Director)Dan Cahana(Director)in
Co-investorsAfore CapitalAndreessen HorowitzMotive ForceNotable CapitalAltimeter CapitalBanana Capital+3 more
Inth provides developer-first consent infrastructure that allows software teams to manage cookie consent, regional rules, and script loading directly in code rather than through external platforms.
AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US
Christopher Burns(Founder)in
Co-investorsY Combinator
Limitless creates AI tools designed to augment human intelligence and overcome cognitive limitations by improving memory and focus.
AI & Machine LearningEnterprise SoftwareFuture of WorkHardware
Dan Siroker(Founder)in
Co-investorsAndreessen HorowitzFirst Round CapitalDaft CapitalDash VCEvolution VC PartnersIncubate US+7 more
Liquid AI builds device-native foundation models (LFMs) designed to run efficiently on processors outside data centers, such as phones, laptops, and cars, under latency, privacy, and hardware constraints.
AI & Machine LearningDeep TechEnterprise SoftwareBrookline, US
Daniela Rus(Co-founder)inMathias Lechner(Co-founder & CTO)inRamin Hasani(Co-founder & CEO)inAlexander Amini(Co-founder & CSO)inLouis Hunt(Executive Officer)Stephen Pagliuca(Director)
Co-investorsBold Capital PartnersDuke Capital PartnersGlasswing VenturesIsaiISAI GestionLink Ventures+4 more
LM Studio offers Bionic, a locally-run AI agent designed to work with open models for creativity, work, and coding tasks.
AI & Machine LearningDeep TechDeveloper ToolsNew York City, US
Yagil Burowski(Founder)
Co-investorsMatrixTorch Capital
Massdriver provides infrastructure automation and management for cloud-native organizations, enabling developers and operations teams to provision and manage infrastructure with ease while maintaining compliance and operational standards.
Cloud ComputingDeveloper ToolsEnterprise SoftwareLos Angeles, US
Cory O'Daniel(Founder)inChris Hill(Founder)in
Co-investorsY Combinator
MoneyHash provides a payment orchestration platform that aggregates payment APIs, providers, and technical capabilities through a provider-agnostic cloud, letting businesses build and manage payment infrastructure.
Enterprise SoftwareFintechSaaS
Nader Abdelrazik(Founder)in
Co-investorsFirstCheck AfricaLoftyInc CapitalNuwa CapitalTofino CapitalVentureSouqVision Ventures+5 more
The page lists financial and data regulations (e.g.
FintechSan Francisco, US
Jan Spidlen(Founder)in
Co-investorsCategory Ventures
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)inChristian Bach(Co-founder, Chief Strategy and Creative Officer)in
Co-investorsAndreessen HorowitzBessemer Venture PartnersDesigner FundKleiner PerkinsMenlo VenturesBloomberg Beta+7 more
Not Diamond provides an intelligent model router for coding agents that predicts which language model to use for each input, aiming to reduce inference costs while maintaining accuracy.
AI & Machine LearningDeveloper ToolsEnterprise Software
Jeffrey Akiki(Founder)in
Co-investors640 OxfordAmbush CapitalInovia CapitalLoup VenturesNext Play Ventures
Ona provides cloud-based agent infrastructure that runs developer tasks in isolated environments while laptops are closed, automating workflow execution through events, schedules, and pull requests.
AI & Machine LearningCloud ComputingDeveloper Tools
Co-investorsBright Pixel CapitalCrane Venture PartnersPebblebedAlta Life SciencesColumbus Venture PartnersKorys+1 more
PATH makes refillable aluminum water bottles designed to reduce single-use plastic waste.
Circular EconomyConsumer
Co-investors1st Course CapitalAltelanBloom8Florida FundersForma CapitalRaptor Group+1 more
PlanetScale is a database platform built on the Vitess open-source project, designed for scaling large distributed systems.
Cloud ComputingData & InfrastructureDeveloper ToolsMountain View, US
Jiten Vaidya(Founder)in
Co-investorsAndreessen HorowitzDig Ventures Management LimitedFirebolt Ventures Management Company, LlcInsight PartnersKleiner PerkinsSignalFire+1 more
Postman is an API platform that helps developers build, test, and manage APIs throughout their lifecycle.
AI & Machine LearningCloud ComputingDeep TechDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US
Abhinav Asthana(CEO and co-founder)inAnkit Sobti(Co-founder)inAbhijit Kane(Co-founder)in
Co-investorsBattery VenturesInsight PartnersNexus Venture Partners83NorthAltra VentureCoatue Management+13 more
Power Planet develops drilling and well operations technologies, hardware innovations, and integrated energy systems for oil and gas field development.
CleantechClimate TechDeep TechEnergyHardware
Keith Elliott(Co-Founder & CEO)inBrij Hall-Potnis(Co-Founder & CTO)inShyamli Mohamed(CFO)
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 PartnersHeavybitKleiner PerkinsMango Capital
Purplefish builds a takeoff platform for industrial pipe contractors and fabricators to extract material and labor data from isometric drawings, replacing manual Excel-based processes.
AI & Machine LearningConstruction TechEnterprise SoftwareSaaSNew York City, US
Adam Sirois(Co-founder)inMartin Kess(Co-founder)in
Co-investors8VC
QuantPi develops testing and verification technology for artificial intelligence systems to assess their reliability, explainability, and safety before deployment.
AI & Machine LearningDeep TechDeveloper ToolsEnterprise SoftwareSaaSSaarbrΓΌcken, DE
Co-investorsCapnamicFirst MomentumNew Forge
Railway is a cloud computing platform that provides infrastructure for developers to build, deploy, and ship software with reduced operational overhead.
Cloud ComputingData & InfrastructureDeveloper Tools
Jake Cooper(Founder)in
Co-investorsUnusual VenturesBasecamp FundRedpoint VenturesTq Ventures Llc
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 CollectiveHeavybitMucker CapitalTop Corner Capital+4 more
ReSim provides a simulation and testing platform for physical AI and robotics teams, letting them evaluate embodied AI performance across thousands of virtual scenarios before deployment.
AI & Machine LearningDeveloper ToolsRoboticsPittsburgh, US
Simon Box(Founder)in
Co-investorsShield CapitalXTX Markets
Retool is a platform for building and governing internal tools, admin panels, and dashboards across teams.
Data & InfrastructureDeveloper ToolsEnterprise SoftwareFuture of WorkSaaSSan Francisco, US
David Hsu(Founder/CEO)in
Co-investorsCoatue ManagementLiquid VenturesSequoia CapitalStandard CapitalSV AngelY Combinator+6 more
Charlottesville, US
Gilman Callsen(Executive Officer, Director)Benjamin Schlatka(Director)
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)inPeter McKay(Executive Officer, Director)inStephanie Dominy(Executive Officer)in
BoardPhilippe Botteri(Director)inMatthew Weigand(Director)inKen Fox(Director)
Co-investors2050 CapitalAccelAlkeon InnovationAmity VenturesAmplify PartnersAtlassian Ventures+31 more
Sourcetable is an AI-powered spreadsheet that lets users query databases and applications in plain English, generate charts, clean and structure data, and run Python-based analysis without switching tools.
AI & Machine LearningData & InfrastructureFuture of WorkSaaSSan Francisco, US
Eoin J.W. McMillan(Executive Officer, Director)in
BoardMichael Berolzheimer(Director)
Co-investorsAmplify.LAJames Beshara FundNextView VenturesTRAC (Third Round Analytics Capital)Bee PartnersLong Journey Ventures
StackBlitz provides a browser-based development environment for creating and launching web applications, with code execution happening entirely within the user's browser using WebAssembly technology.
Cloud ComputingDeveloper ToolsEnterprise SoftwareSan Francisco, US
Eric Simons(CEO & Co-Founder)inAlbert Pai(CTO & Co-Founder)inAlexander Berger(Chief Operating Officer)inBryan Adams(Vice President of Sales)inMitchell Wright(Head of Growth Marketing and Data)inHyllarie Colyer(Head of People)in
Co-investorsConvictionEmergence CapitalGreylock PartnersGV (Google Ventures)Insight PartnersMadrona Venture Group+3 more
StackOne provides infrastructure for AI agents to integrate with and act across business applications through optimized connectivity, execution, and security features.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareNewbury, GB
Romain Sestier(Founder)in
Co-investorsEpisode1GV (Google Ventures)Inception FundPlayfair CapitalWorkday Ventures
Stripe provides financial infrastructure for businesses to accept payments, offer financial services, and implement custom revenue models across international markets in 135+ currencies.
Developer ToolsFintechSaaSSan Francisco, US
John Collison(Co-founder & President)inPatrick Collison(Co-founder & CEO)inWilliam Gaybrick(Executive Officer)inGreg Brockman(Founding Engineer, then first CTO)inSarah Heckin
BoardMichael Moritz(Director)in
Co-investors500 GlobalAdvaita CapitalAglae VenturesAir Street CapitalAlkeon InnovationAndreessen Horowitz+60 more
Supabase is a fully managed PostgreSQL backend platform that integrates with AI builders like Claude, Lovable, and Bolt to enable rapid development of production applications.
Cloud ComputingData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US
Paul Copplestone(Founder)inAnt Wilson(Founder)inPAUL COPPLESTONE(Executive Officer, Director, Promoter)in
BoardCARYN MAROONEY(Director)
Co-investorsBase Case CapitalAccelBerkeley FrontierChapter OneCoatue ManagementCraft Ventures+12 more
Tailscale provides secure connectivity infrastructure.
Cloud ComputingCybersecurityDeveloper ToolsToronto, CA
Avery Pennarun(CEO)inBrad Fitzpatrick(Founder)inDavid Crawshaw(Founder)in
Co-investorsAccelAvenir Growth CapitalCRV (Charles River Ventures)Cyber Mentor FundFlex Capital PartnersHeavybit+6 more
Thunder Compute develops GPU virtualization software that improves utilization of graphics processing units in data centers.
AI & Machine LearningCloud ComputingData & InfrastructureDeep TechDeveloper ToolsEnterprise SoftwareSan Francisco, US
Carl Peterson(Founder)inBrian Model(Founder)in
Co-investorsY Combinator
Team Tito builds Tito, a ticketing platform used by event organisers worldwide that has processed over $1 billion in tickets.
MarketplacesMedia & EntertainmentSaaSLong Island City, US
PaulWeiqiang Chu(Executive Officer, Director)Platon Levitski(Executive Officer, Director)
Co-investorsEnterprise Ireland
tldraw provides an SDK for building canvas-based applications like whiteboards, diagrams, and collaborative tools in React.
Developer ToolsSaaSLondon
Steve Ruiz(Founder)in
Co-investorsAmplify PartnersLux Capital
Turso is a database engine built as a Rust rewrite of SQLite, adding concurrent writes, native vector search, cloud-native replication, and browser/on-device support via WebAssembly.
AI & Machine LearningData & InfrastructureDeveloper ToolsLondon, CA
Glauber Costa(Founder)in
Co-investorsFirst Star VenturesMango CapitalNorwest Venture PartnersEssence Venture Capital
Unkey is an API management platform for developers, designed to handle API workflows including integration and scaling.
Cloud ComputingData & InfrastructureDeveloper ToolsSaaS
James Perkins(Co-founder)inAndreas Thomas(Co-founder)in
Co-investorsUncork CapitalESSENCE VCDeep AcreHomebrewEssence Venture CapitalTokyo Black
Upside Foods produces cultivated meat using cell-based technology.
BiotechFoodTechSan Francisco, US
Uma Valeti(Founder & CEO)in
Co-investorsAlwyn CapitalCPT CapitalDentsu VenturesFifty YearsFuture VenturesJoyance Partners+10 more
VoidZero builds open-source infrastructure and tooling for the JavaScript ecosystem, developed by the creators and maintainers of widely used JavaScript projects.
AI & Machine LearningDeveloper ToolsSaaS
Co-investorsAccelPeak XV Partners
Weights & Biases is an AI developer platform that enables teams to build, train, and monitor AI agents, applications, and models with tools for experiment tracking, model management, and agent evaluation.
AI & Machine LearningData & InfrastructureDeveloper ToolsSan Francisco, US
Shawn Lewis(Executive Officer, Director)inLukas Biewald(Executive Officer, Director)inChris Van Pelt(Executive Officer, Director)inMariah Nagy(Executive Officer)inYan-David Erlich(Executive Officer)inCameron Kinloch(Executive Officer)in
Co-investorsAIX VenturesBrighter CapitalBrilliant Phoenix CapitalCoatue ManagementDiagram CapitalFelicis Ventures+6 more
Zed is a code editor written from scratch in Rust that uses multiple CPU cores and the GPU for high performance, with support for running AI agents in parallel to edit code and run tools.
AI & Machine LearningDeveloper ToolsFuture of Work
Nathan Sobo(CEO & Co-founder)inAntonio Scandurra(Co-founder)inMax Brunsfeld(Co-founder)in
Co-investorsMatchstick VenturesNimble PartnersRedpoint VenturesRoot Ventures Manager, LlcSequoia CapitalV1 VC
Zoo builds Zoo Design Studio, AI-native CAD software featuring Zookeeper, a conversational CAD agent that interprets design intent, reasons and iterates, and generates editable B-rep models on a modern geometry engine.
Advanced ManufacturingAI & Machine LearningSaaSLos Angeles, US
Jessie Frazelle(Founder)
Co-investorsDuke Capital PartnersQuantonationUndeterred CapitalE1 Ventures
Rows marked βSEC filingβ are inferred from directors named on the company's SEC Form D β public regulatory data, not a portfolio list published by the firm.