WinterLabs
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Open Source Lab

Software we build in the open, for everyone.

Open Source Lab is how Winter Labs gives back. We release the tooling, harnesses, and libraries we build internally as free, vendor-neutral software — from an open MISRA/CERT/BARR-C compliance workflow to the agentic silicon compiler itself. Everything here is built to be installed, forked, and depended on.

Vendor-neutral toolingCompliance & quality workflowsAgent infrastructure (MCP)Docs & community
Open Source Lab logo
2
projects in this lab
MIT
released for everyone
6
tracked milestones
OS
lab designation

2 projects underway

Xenon

In Development

The agentic silicon compiler.

Open-source EDA is now good enough to ship real silicon, but the toolchain is wide, fragmented and unforgiving — a single RISC-V core can need 15+ invocations across 8 tools, each with its own flags and log format. Xenon puts a team of Claude Code agents in charge of that toolchain: they read synthesis reports, parse timing violations, and edit RTL to fix them. A checkpointed step pipeline keeps every artifact reproducible, and an MCP server exposes the whole flow to agentic IDEs.

161
tests passing
10+
EDA tools orchestrated
RTL→GDS
flow

What makes it different

  • Agents read synthesis & timing reports, then edit RTL to close violations
  • Reproducible Docker sandbox — every run is checkpointed and diffable
  • MCP server exposes the flow to any agentic IDE
  • Targets tape-out-proven SkyWater 130 & GF 180 PDKs

Stack

VerilatorYosysOpenROADOpenLANEcocotbnextpnrGTKWave

Also in

Agentic EDARTL→GDSIIOpenLANEMCPClaude Code

Maisha

Open Source

Open-source MISRA / CERT / BARR-C compliance for embedded C.

Maisha is the free, vendor-neutral alternative to the paid compliance workflow that tools like Polyspace, Helix QAC and Coverity sell: the agentic fix loop, verification gate, deviation and audit-evidence workflow, and author-time guidance. It runs on free engines (cppcheck + clang-tidy) or layers on top of a qualified engine you already own via SARIF. It is a workflow orchestrator and audit-trail layer — not a qualified detection engine, and honest about it. Named for the Swahili word for 'life' — because this is the code that flies planes and runs medical devices.

3
standards
v0.3.1
release
MIT
license

What makes it different

  • MISRA C:2012, BARR-C:2018 and CERT C compliance workflows
  • Agentic fix loop + verification gate + deviation & audit evidence
  • Runs on free engines (cppcheck + clang-tidy) or a qualified one via SARIF
  • Install with `pipx install maishac` — usable from any agentic IDE via MCP

Stack

Pythoncppcheckclang-tidySARIFMCP

Also in

MISRA CCERT CStatic AnalysisMCPMIT

Have a hard problem worth freezing time over?

Whether it's silicon, capital, or research at the edge of what's possible — we'd love to hear what you're building.