Focused tools for developers
Lab4 builds small, sharp utilities that solve real problems — no bloat, no subscriptions, just tools that work.
Lab4 builds small, sharp utilities that solve real problems — no bloat, no subscriptions, just tools that work.
Run Postgres in your browser, connect via psql.
A browser-based PostgreSQL database tool. Spin up databases instantly, query them directly, no install required.
db4.app →
Screen recording made simple.
A fast, lightweight screen recording and video tool. Capture, trim, and share — no fluff.
rec4.app →Lab4 is a one-person software studio focused on building practical developer tools.
The founder brings deep experience across data engineering, infrastructure, and open-source development — building systems that handle real workloads at scale.
Every Lab4 product is designed with the same philosophy: solve one problem well, keep it fast, and stay out of the way.