Products · Case studies

Software we build for ourselves.

Every product here is designed, engineered and run by Devian Labs. Each case study covers the problem, what we built, and the engineering underneath: the same work we do for clients.

Open source and community

Betelgeuse

Android preview

Betelgeuse

Open source

Notes, docs and databases that stay yours.

A block-based workspace where every page is a plain Markdown file in a git repository you own, on your computer and now your phone, and your AI agents can read only the pages you choose to share.

25 GitHub stars
2,000+ walkthrough views

Read the case study GitHub betelgeuse.devianlabs.com ↗

Launch video · Devian Labs
Introducing Betelgeuse: an Open-Source, Local-First Notion Alternative

Walkthrough · AgileCoder
Betelgeuse is the best open-source alternative to Notion

Devian Desktop

Open source

A control center for the AI coding agents on your machine.

Devian shows what Claude Code, Codex, Cursor, OpenCode and Antigravity actually did on your machine: every session, command and file edit, the servers they left running, what they remember and how many tokens they used. Free, open source and fully local.

Read the case study GitHub devian.app ↗

AgileCoder

Our knowledge arm

Learn. Build. Ship.

Where Devian Labs shares what it builds: video tutorials on YouTube, written deep-dives on the blog, a Kindle book, The AI Toolkit for Modern Developers, and production-ready boilerplates for developers who get things done by actually shipping.

Watch on YouTube

Visit agilecoder.in Tech blog ↗