Built by developers, for the way developers actually work.
CodeLabs started as a side project: a real CodePen-style playground that also runs C# and SQL. Built by a developer and teacher in Croatia to make code easy to write, run, and share together.
Our story
In 2023, I wanted to share a quick C# snippet with a colleague the way I'd share a CodePen. Nothing existed. Sandboxes were either too heavy (full IDEs) or too narrow (browser-only). So I built one, and kept building.
Today CodeLabs runs three first-class editors with the same look, the same shortcuts, and the same real-time collab. One playground. Any stack.
installs needed, everything runs in the browser
to share a pen or join a live room
first-class language stacks
code sync, voice, and video in every editor
The people behind it
Marko H.
Founder
What we believe
Press Run. See output. The loop should be sub-second.
A URL is enough.
Export anytime, no lock-in, no buried buttons.