Y Combinator's Developer Tools Portfolio

AI Agents to Find Bugs in Your Product

Herdr develops an open-source background server and runtime environment designed specifically for managing AI coding agents

Uiflow is a no-code platform that allows its users to build production applications using their enterprise data.

Metafi builds Blockchain infrastructure for Web3 games with embedded wallets, cross-chain transactions, and on-chain event monitoring.

HyperDX is a SAAS company that offers simple workflows that assit engineers in resolving production bugs quicker.

Neosync develops open source data replication and anonymization product.

Native Voice is a software SDK for audio device manufacturers to integrate their SDK to create the next generation of listening devices.

Line empowers contractors with tools that make building decarbonization projects affordable for their customers and boosts conversion rates.

Root Access is an applied AI lab developing agents for hardware engineering.

Pinnacle is an API for RCS, enabling developers to create interactive, app-like messages for seamless purchasing on iOS and Android.

Autumn Labs is a platform for manufacturing observability and operations

Melty offers an open-source AI code editor that helps engineers write production-ready code and better understand coding.

Opslane is an open tool that makes incident response easier by automating work and providing important details for engineers.

Zigma serves as a frontend platform for easier product interface creation.

Random Labs develops a local open-source software engine, promoting collaboration and accessibility for all in tech.

Haystack Software automates the steps of software development allowing engineers to focus on key work.

expand.ai effortlessly transforms any website into a type-safe API, making integration seamless and secure.

Jarmin offers machine-learning engineering services to help companies build and deploy AI/ML systems.

Building the platform for companies to ship AI agents fast

Self-Driving CI: AI-native GitHub Actions runners with agents that continuously optimize your builds.

Expanse is a cluster optimization platform that improves GPU utilization by predicting resource fit and failure risk at job submission time.

TesterArmy provides an AI-powered QA platform that tests web and mobile apps via real browser runs and CI integrations.

Agency Tool Company builds software infrastructure for deploying and managing software on field robots.

Zoltar Labs provides AI-assisted tools to automate customer support.

SideGuide allows developers to search for and communicate with documentation and resources.

Endstack develops a cloud desktop operating system with an integrated AI agent for individuals and teams.

Maitai is a reliable and self-improving enterprise AI, ready to enhance the business efficiency.

Rindler develops a Model Context Protocol (MCP) platform enabling AI agents to interact reliably with websites that lack APIs.

GitCafe provides a collaborative code hosting and review platform with stacked pull requests, GitHub synchronization, and a developer CLI.

Mosaic is a platform that brings AI coding sessions into one place, helping developers manage and work across coding agents.

Agent FM is AI desktop application that helps users to complete the described tasks across files, browser, and inbox.

Conifer provides AI routing gateway that optimizes token spend by intelligently routing queries across local hardware and cloud models.

Akon Labs develops GitNexus, a code intelligence engine for software engineering agents.

Waddle Labs builds LLM agents and generalist software infrastructure designed for real-time robotics control and learning.

hardware intelligence builds agent-native toolchains and automated design workflows to streamline semiconductor chip development.

Codag cuts coding-agent costs by optimizing large tool outputs like logs and test results so agents consume fewer tokens.

Experiential Labs provides an open-source AI gateway that unifies cloud models, self-hosted hardware, and custom API keys.

zeroheight is a DevOps platform that allows design teams to create up-to-date style guides and document their design system resources.

Fig adds visual apps, shortcuts, and autocomplete to your terminal.

Depot is a build acceleration and developer productivity platform that speeds up container builds and GitHub Actions runners by up to 40x.