SimpleBLE
Build Bluetooth once. Ship it everywhere.
One simple Bluetooth API for Windows, macOS, Linux, iOS and Android, usable from more than ten languages and frameworks.
- Bluetooth LE
- Cross-platform
- 10+ languages
- Agent-ready
The California Open Source Company
We make open source that's built to last.
- Built in California
- Open source, built to last
- Maintained for the long haul
What we do
Software you can count on.
We build open source and then do the unglamorous part: keeping it maintained, documented and working everywhere it runs.
- 1
Open and sustainable
We believe in commercial open source. The code stays open, so anyone can see exactly how it works, and commercial licensing funds the long-term maintenance that keeps it reliable.
- 2
Built with taste
We start from what people actually need. We keep complexity out of their way, choose sensible defaults and keep interfaces stable, so getting to real value takes minutes, not weeks.
- 3
For people and agents
Software is increasingly written with AI agents, which work best with well-tested building blocks. We design for both, with simple APIs and clear documentation.
From the workshop
Our projects
From the blog
Notes & essays
Our Thesis3 min read
The Business Thesis of The California Open Source Company
Why the niche open source projects companies depend on keep falling through the cracks, and what it takes to keep them maintained.
Our Story3 min read
The Origin Story of The California Open Source Company
How a Bluetooth library built out of frustration taught us what it actually takes to keep critical open source alive.
Say hello.
Questions about our projects, ideas for working together, or just want to talk shop? Drop us a line.