Developer Tools Startups

Graze builds tools on Bluesky and the AT Protocol that let developers, curators, and brands create, manage, and control their own social media algorithms and feeds. It targets community moderators, creators, and brands working on the open, user-owned social web.

2 investors

Groundlight builds machine learning and computer vision technology to enable robotics applications. The company serves developers and robotics teams building industrial and real-world automation systems.

2 investors

Guardrails AI provides an AI reliability platform for building, governing, and scaling generative AI applications. The platform enables teams to simulate synthetic datasets, generate evaluation datasets to identify failure modes, and deploy runtime safeguards that detect policy violations, hallucinations, and data leakage.

2 investors

Guardsquare provides a mobile application security platform that combines continuous automated security testing with layered code hardening techniques such as name obfuscation, control-flow concealment, polymorphic defenses, and runtime application self-protection (RASP). It serves mobile app development teams looking to protect Android and iOS apps against reverse engineering and tampering.

2 investors

HackMD is a collaborative Markdown workspace that enables developers and teams to document, share knowledge, and build community through real-time documentation tools. It serves developers and technical communities across 170 countries.

2 investors

Hackworks designs and executes custom hackathons and innovation programs for enterprises across health, finance, professional services, government, and real estate sectors. The company uses challenge-based learning and co-creation to deliver on business objectives including digital transformation, talent development, and innovation culture building.

2 investors

Hanko provides open-source authentication infrastructure, including passcodes and authenticator-app (OTP) login flows, that teams can deploy with EU hosting or self-host. It targets developers and is positioned for European teams wanting control over user data and authentication infrastructure, with framework integrations and starter templates.

2 investors

Hanomi builds an AI intelligence layer for mechanical engineering that captures senior engineers' design, dimensioning, and tolerancing expertise to help bridge the gap between 3D geometry and manufacturable parts. It serves mechanical engineering and manufacturing teams.

2 investors

Hansel Onboard is a feature adoption manager that helps product teams drive feature discovery and adoption through no-code nudges for mobile applications. It serves mobile-first product teams looking to highlight new features, re-educate users, and guide them through product interactions.

2 investors

Hanzo Industries develops AI-powered marketing and development platforms that help businesses scale through intelligent technology and data-driven decision-making. The company serves entrepreneurs and small businesses seeking to compete with larger enterprises using tools like AI code editors, marketing automation, and the Sensei mentorship framework.

2 investors

Hardware Intelligence builds an agent-native toolchain for chip design, starting with Wave, an agentic waveform debugger for terminal use.

2 investors

HarperDB is a backend platform that combines a database, REST and GraphQL APIs, caching, real-time messaging, vector search, and blob storage from a single schema definition, so developers can build application backends without separate frameworks or services. It supports local development and globally distributed deployment through its Fabric platform.

2 investors

HEAL provides application performance monitoring and full-stack observability across cloud, microservices, and legacy infrastructure, helping DevOps and IT operations teams reduce incident resolution time and prevent cascading failures.

2 investors

Heeler is an application security platform designed for AI-driven development that automates code review, remediation, and risk auditing across the software development lifecycle. It helps development teams keep pace with AI-generated code by enforcing security guardrails and identifying exploitable risks without slowing deployment.

2 investors

Helicone provides infrastructure for AI companies to route, debug, and analyze their applications. The platform serves developers and organizations building AI systems.

2 investors

Hera is an AI-powered motion design tool that generates animated videos from text descriptions. It serves creators and marketers who need to produce product launch videos and other promotional content.

2 investors

Hex-Rays develops IDA, a binary analysis tool used by cybersecurity professionals for reverse engineering, malware analysis, and vulnerability research across multiple processor architectures. The platform supports dynamic debugging, pseudocode generation, decompilation, and team collaboration features.

2 investors

Hexus is an AI platform for product-focused marketing teams that creates and repurposes product content into assets such as how-to guides, demos, social posts, emails, and blog excerpts. It includes a Chrome extension for recording and editing, a visual HTML editor, content personalization, multi-channel distribution, and performance analytics.

2 investors

Hicap provides a unified API platform that routes AI requests to 100+ language models across multiple providers, with built-in observability, cost optimization, and access controls. It serves development teams and enterprises managing production AI infrastructure.

2 investors

Highflame provides identity and authorization infrastructure for AI agents, enabling enterprises to govern autonomous AI systems that make decisions and take actions on behalf of users while maintaining accountability and control.

2 investors

Highnote is a payments platform that lets companies launch and scale financial products including card issuing, acquiring, credit programs, money movement, and real-time ledgering from a single system. It serves businesses embedding or operating payment products, with solutions for areas such as supplier payments, spend management, fleet, travel payouts, and embedded finance.

2 investors

Hillclimb develops training data for recursive self-improvement in AI models, focusing on aggregating human research data and automating reinforcement learning environment creation. The company sells the resulting data to frontier AI laboratories.

2 investors

HiveIO provides a virtual desktop infrastructure platform that automatically scales computing resources and manages end-user desktops with in-memory storage capabilities. The solution targets enterprise organizations seeking simplified VDI deployment with reduced operational complexity and lower total cost of ownership.

2 investors

Hive Intelligence provides AI agents with live cryptocurrency market data through multiple interfaces, ensuring every data point includes its source, freshness, and verifiable receipt. The company offers API access, CLI tools, and MCP server connections to a catalog of crypto market data, DeFi metrics, wallet information, and token risk assessments.

2 investors