Laboratory for Apps
Utilities built for your apps
Lab4 builds focused tools that help you get things done. Every product follows a simple pattern: [Utility]4.app — a tool, for you.
Laboratory for Apps
Lab4 builds focused tools that help you get things done. Every product follows a simple pattern: [Utility]4.app — a tool, for you.
Run Postgres in your browser, connect via psql.
A browser-based PostgreSQL tool. Spin up databases instantly, query them directly, no install required.
db4.app →
Screen recording made simple.
A fast, lightweight recording tool. Capture, trim, and share — no fluff.
rec4.app →Lab4 is a software laboratory focused on building practical tools for real use cases.
Built on deep experience across data engineering, infrastructure, and open-source development — with a track record of shipping systems that handle real workloads at scale.
Every product follows the [Utility]4.app pattern — a clear, consistent convention where the name tells you exactly what the tool does, and the 4 means it's built for you.