Rain Capital — Full Portfolio

Cloud email and data security platform protecting sensitive enterprise data.

Astrix provides security solutions for AI agents and non-human identities (NHIs) in enterprise cloud environments, helping organizations discover, secure, and govern API keys, OAuth tokens, and service accounts across their infrastructure.

AI & Machine LearningCybersecurityEnterprise Software

Alon Jackson(CEO & co-founder)in

Co-investorsAlphaDriveBessemer Venture PartnersCRV (Charles River Ventures)F2 Venture CapitalMenlo VenturesWorkday Ventures

Better Auth is an open-source authentication framework for TypeScript applications that provides composable, plugin-based authentication with support for multiple methods including credential auth, social sign-on, passkeys, and enterprise features.

CybersecurityDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US

Bereket Engida(Founder)in

Co-investorsChapter OneLobster CapitalP1 VenturesSeaplane VenturesTranspose Platform ManagementY Combinator

Abhishek Dubey(Founder)in

Co-investorsCheyenne VenturesCrosslink CapitalCyber Mentor FundM12 (Microsoft's Venture Fund)

Capsule8 developed runtime security and attack detection software for Linux production environments, protecting cloud workloads, containers, and servers.

Cloud ComputingCybersecurityEnterprise Software

John Viega(Founder)in

Co-investorsBessemer Venture PartnersClearSkyIntel CapitalSyn Ventures Seed Management LlcAramco VenturesIndex Ventures

AI-native data governance platform for managing enterprise unstructured data.

Team82 is a cybersecurity vulnerability and threat research team that identifies software and firmware vulnerabilities in cyber-physical systems.

AI & Machine LearningCybersecurityIoT

Galina Antova(Founder)inYaniv Vardiin

BoardDavid Millstone(co-CEO of Standard Industries and co-CIO of Standard Investments)

Co-investorsArcher Capital GroupArcher Venture CapitalB CapitalBessemer Venture PartnersBMW i VenturesBosch Ventures+14 more

Product security platform embedding security directly into the software development lifecycle.

Clover Security provides context-aware AI agents for product security that detect risks, run automated security reviews, generate threat models from codebases, and enforce security policies within engineering workflows.

AI & Machine LearningCybersecurityDeveloper Tools

Alon Kollmann 🍀(Founder)inOr Chen 🍀‏(Founder)in

Co-investorsNotable CapitalTeam8Team8 Capital

Costanoa is a venture capital firm that backs early-stage founders solving large, difficult problems, providing long-term partnership and operational support.

Greg Sands(Founder)inAmy Cheethamin

Co-investorsCostanoa VenturesFoundryUnion Grove Venture PartnersCherry VenturesDVx VenturesFirst In+4 more

Elisity provides an identity-based microsegmentation platform that turns existing network infrastructure (Cisco, Arista, Aruba, Juniper switches and Palo Alto firewalls) into policy enforcement points to discover devices and enforce least-privilege access without agents, new hardware, or re-IPing.

CybersecurityEnterprise SoftwareIoTSaaSSan Jose, US

Brian Thompson(Executive Officer)James Winebrenner(Executive Officer, Director)

BoardBrian Long(Director)inMichael Goguen(Director)inSpencer Tall(Director)inStephen Ward(Director)in

Co-investorsAllegisCyber CapitalAtlantic Bridge VenturesInsight PartnersALLEGIS CAPITALTwo Bear Capital

Fleak is an AI infrastructure layer that sits between data sources and AI applications, normalizing, filtering, governing, and routing incoming data in real time.

AI & Machine LearningData & InfrastructureDeveloper Tools

Co-investorsHivemind Capital PartnersOakseed VenturesSAV (Scale Asia Ventures)SmartGateVC

JupiterOne provides security asset management and visualization software that helps organizations map and monitor their digital infrastructure and security posture in a unified platform.

Cloud ComputingCybersecurityEnterprise SoftwareSaaS

Erkang Zheng(Chief Innovation Officer & Chairman of the Board)inPaul Forte(Chief Executive Officer)in

Co-investors11.2 CapitalIntel CapitalSapphire VenturesSGH Capital

Cyber asset management platform for visibility across cloud and SaaS environments.

Co-investors11.2 CapitalIntel CapitalSapphire Ventures

Lakera provides an AI-native security platform that protects enterprise GenAI applications, AI agents, and MCPs from threats such as prompt injections, data leakage, and jailbreaks.

AI & Machine LearningCybersecurityEnterprise Software

Co-investorsFly VenturesAtomicoredalpine

Lema is a third-party risk management (TPRM) platform that combines vendor risk assessment with continuous monitoring, using automated analysis to validate vendor claims and surface risks that manual checklists miss.

AI & Machine LearningCybersecuritySaaS

Co-investorsF2 Venture CapitalTeam8 Capital

Manifold operates a frontier AI lab providing GPU compute infrastructure with hardware-backed data protection and confidential computing capabilities.

AI & Machine LearningCloud ComputingData & InfrastructureAustin, US

Co-investorsDigital Currency GroupCherry VenturesCostanoa VenturesModern Technical

Manifold builds autonomous warehouse robots that perform case picking, palletizing, and trailer loading/unloading, combined with orchestration software that connects to existing ERP, WMS, and WES systems.

Advanced ManufacturingAI & Machine LearningHardwareLogistics & Supply ChainRoboticsLos Angeles, US

Joshua Ibrahim(Founder)inNicolas Yeh(Founder)in

Co-investorsY CombinatorCalibrate VenturesCherry VenturesCostanoa VenturesModern TechnicalReach Capital+1 more

Minimus develops security solutions for cloud-native applications, founded by the team behind Twistlock.

Cloud ComputingCybersecurityDeveloper Tools

Ben Bernstein(CEO & Co-Founder)inDima Stopel(VP R&D & Co-Founder)John Morello(CTO & Co-Founder)in

Co-investorsMayfield FundOregon Venture FundYL Ventures

Mitiga provides cloud incident response and breach prevention software using AI-driven detection and forensic analysis for enterprises.

AI & Machine LearningCloud ComputingCybersecurity

Ariel Parnes(Founder)inCharlie Thomasin

Co-investorsAtlantic Bridge VenturesClearSkyDnx VenturesGlilot Capital PartnersSyn Ventures Seed Management Llc

Oasis Labs develops privacy-preserving data analytics and AI tools using differential privacy, homomorphic encryption, and zero-knowledge proofs for organizations that need to analyze sensitive data while protecting individual privacy.

AI & Machine LearningCybersecurityData & InfrastructurePalo Alto, US

Dawn Song(Founder & CEO)Robert Gilchrist Jaros(Executive Officer)

Co-investors1k(x)1kxAmino CapitalAndreessen HorowitzAngelONE CapitalAusum Ventures+18 more

OX Security provides application security solutions that help organizations identify and prioritize exploitable, reachable, and impactful risks across the software development lifecycle.

AI & Machine LearningCybersecurityDeveloper Tools

Neatsun ZivinLior Arziin

Co-investorsEvolution Equity PartnersM12 (Microsoft's Venture Fund)Swisscom Ventures

ProjectDiscovery offers Neo, an autonomous AI-powered security testing platform that continuously scans web applications, APIs, and cloud infrastructure to identify and verify vulnerabilities with high accuracy and minimal false positives.

AI & Machine LearningCybersecurityDeveloper Tools

Rishiraj Sharma(Founder)inSandeep Singh(Founder)in

Co-investorsAngel Collective Opportunity FundCRV (Charles River Ventures)Point72 VenturesSignalFireEssence Venture CapitalMango Capital

Runway helps founders understand financial data and spreadsheets.

AI & Machine LearningEnterprise SoftwareFintechSaaS

Siqi

Co-investorsAndreessen HorowitzChamaeleonDreamers VCShrug Capital75 & SunnyAllianceBernstein+5 more

runZero provides an exposure management platform that discovers and fingerprints IT, OT, IoT, cloud, mobile, and remote assets without agents or credentials, giving security teams visibility into their attack surface.

CybersecurityIoTSaaS

HD Moore

Co-investorsDecibel Partners

Satori provides a data security platform that enables self-service access to data across analytics and production environments while applying dynamic masking and access control policies.

CybersecurityData & InfrastructureEnterprise Software

Co-investorsB Capital GroupB4 CapitalEvolution Equity PartnersYL Ventures

Seemplicity offers an AI-driven exposure and remediation management platform that aggregates and deduplicates security findings across tools, prioritizes risks, and automates remediation workflows for enterprise security teams.

AI & Machine LearningCybersecuritySaaS

Co-investorsAtlantic Bridge VenturesGlilot Capital PartnersSienna Venture Capital

Simbian builds a self-improving security operations (SecOps) platform designed to detect and stop AI-powered cyber-attacks that conclude faster than traditional tools or human analysts can respond.

AI & Machine LearningCybersecurityEnterprise Software

Ambuj Kumar(CEO & Co-Founder)Alankrit Chona(CTO & Co-Founder)Sumedh Barde(Chief Product Officer)

Co-investorsCota CapitalIcon VenturesWipro Ventures

SOC Prime provides an AI-assisted detection engineering platform that uses Detection-as-Code principles, real-time threat intelligence, and MITRE ATT&CK mapping to help security teams turn threats into validated detection logic and operationalize detections across SOC environments.

AI & Machine LearningCybersecurityEnterprise SoftwareSaaS

Alex Bredikhin(Founder)in

Co-investorsAngel OneAtlantic Bridge VenturesDnx VenturesRembrandt Venture PartnersStreamlined VenturesJ-Ventures+2 more

AI red teaming and security platform for AI applications across the full lifecycle.

SPLX offers a security platform for enterprise AI systems, covering automated red teaming, runtime protection against prompt injections and data leakage, governance and compliance mapping, and remediation.

AI & Machine LearningCybersecurityEnterprise SoftwareDover, US

Kristian Kamber(Executive Officer, Director)Ante Gojsalic(Executive Officer, Director)

BoardStanislav Sirakov(Director)in

Co-investorsDNV VenturesInovo VCSouth Central VenturesLAUNCHub Ventures

Straiker builds security software for enterprise AI agents, offering agent discovery, autonomous red teaming for attack paths, and runtime protection across tools, data, MCP servers, and workflows.

AI & Machine LearningCybersecurityEnterprise SoftwareMountain View, US

Ankur Shah(Co-Founder & CEO)Sreenath Kurupati(Co-Founder & CTO)

Co-investorsGTM CapitalNeva Sgr.

Tetrate builds AI governance and routing infrastructure for enterprises, including a service that routes queries to models based on cost, performance, and policy, and a director product for centralized governance and visibility across teams and providers.

AI & Machine LearningCloud ComputingDeveloper ToolsEnterprise Software

Co-investorsNTT Venture Capital8VC

Tinfoil develops secure hardware and systems, with expertise in privacy and security protocols.

AI & Machine LearningCloud ComputingCybersecurityDeep TechDeveloper ToolsEnterprise SoftwareHardwareSan Francisco, US

Tanya Verma(Founder)inJules Drean(Founder)inSacha Servan-Schreiber(Founder)inDanielle Chun(Head of Operations)in

Co-investorsY Combinator

Tuskira offers FedSOC, a federated detection platform that generates security detections across distributed telemetry and correlates signals across 150+ security tools without centralizing logs.

AI & Machine LearningCybersecurityEnterprise Software

Piyush Sharma(Co-founder, CEO)Vipul Parmar(Co-founder, CTO)Om Moolchandani(Co-founder, CPO)

Co-investorsIntel CapitalSYN VenturesSyn Ventures Seed Management LlcWipro Ventures

Ventrilo is an AI assistant platform that provides support for writing, research, and productivity tasks while prioritizing user control and creative enhancement over automation.

AI & Machine LearningDeveloper ToolsSaaSSan Francisco, US

Andy Chou(Executive Officer, Director)

Co-investorsAndreessen HorowitzInception Studio Capital