Hyperbrowser

Better Auth is a comprehensive authentication framework for TypeScript that lets you implement everything from simple auth flows to enterprise-grade systems directly on your own database, embedded in your backend. It’s loved by developers all over the world and endorsed by leading voices in the ecosystem. On top of the framework, Better Auth also provides an infrastructure layer to help you scale with user management and analytics, bot and fraud detection, transactional email and SMS, global ses

shared extracted concepts: developers; shared product terms: developer, infrastructure, scale, management; shared product theme: developer infrastructure; shared affiliation: Y Combinator

Payments for Marketplaces. We're obsessed with all forms of infrastructure, including communications, transportation, energy, waste management, and payments. Robust infrastructure creates a happier, more productive, and more prosperous society. You know exactly what I mean if you've traveled somewhere where you struggled to find a reliable Internet connect or even usable roads. You also know what I mean when you sit in traffic or struggle with public transportation (or lack thereof) in the US. B

shared extracted concept terms: infrastructure, internet, management; shared product terms: re, infrastructure, management, internet; shared product theme: developer infrastructure; shared affiliation: Y Combinator

Intuned is a code-first browser automation platform with an AI agent that builds and maintains your automations. Developers use Intuned to deploy scrapers, RPAs, and crawlers as production-ready TypeScript or Python projects — with stealth, CAPTCHA solving, proxies, auth, and scheduling handled out of the box. The agent builds projects from a prompt, fixes failed runs, and can self-heal automations autonomously when websites change.

shared extracted concepts: captcha solving; shared product terms: browser, captcha, solv, developer; shared product theme: workflow automation, developer infrastructure; same category: AI agents; shared affiliation: Y Combinator

We're building Aide, an AI-native IDE designed for engineers to enjoy problem-solving with agents by their side. We're currently a team of two, based in London, United Kingdom. Between us, we have been tech leads with experience building testing infrastructure at Meta, payment systems for 150k merchants in India, been an ACM ICPC world finalist and Open-Source contributor to critical infrastructure including gRPC and the Bazel build system. We love dev tooling, and enjoy thinking about the futur

shared extracted concept terms: infrastructure; shared product terms: re, solv, us, test; shared product theme: developer infrastructure; same category: AI agents; shared affiliation: Y Combinator

Resend is the new email API for developers. It's designed for you to build, test, and send transactional emails at scale. If you're using Sendgrid, AWS SES, or Postmark, come talk to us.

shared extracted concepts: developers; shared product terms: developer, us, test, scale; shared product theme: developer infrastructure; shared affiliation: Y Combinator

HUD (YC W25) is developing agentic evals and RL environments for Computer Use Agents (CUAs) that browse the web for frontier AI labs. Our CUA Evals framework is the first comprehensive evaluation tool for CUAs. People don't actually know if AI agents are working reliably. To make AI agents work in the real world, we need detailed evals for a huge range of tasks. We're backed by Y Combinator, and work closely with frontier AI labs to provide agent evaluation and training infrastructure at scale.

shared product terms: yc, web, re, back; shared product theme: developer infrastructure; same category: AI agents; shared affiliation: Y Combinator