Tools
The full index of what we make. Developer tools you can buy and own, free tools to build on, and the apps that put them in reach. Everything runs on your hardware; nothing phones home.
Developer products
Owned software — pay once, runs locally, your code never leaves the machine.
Rapu
Local, private code search — BM25 ranked retrieval over your repo. Single binary, zero telemetry, the index never leaves disk.
working · $49 one-time
Crimson Codex
Code intelligence over MCP — your local AI agent reads, searches by symbol, and safely patches a repo, entirely on your machine.
in packaging · $99 one-time
Crimson Analyst
Forensic toolkit for ML inference engines — caught a real, months-hidden Q5_K quantisation bug in one session. Free static modules; paid forensic tier.
in build · free → paid tier
Free tools
MIT-licensed building blocks. Use them as-is, or as the foundation the paid products extend.
- code analysis modules — dead-code, coupling, complexity, dependency audit, churn-risk, doc-coverage, and performance profiling. Reads your repo; nothing leaves it.
- repo-printer (MCP) — surgical code-window reading over MCP: chunked, content-hashed, with optimistic-locking edits so an agent never patches stale code.
- document RAG — index your PDFs, Word, Excel, and EPUB into a local retrieval store; AST-aware for code.
Apps
The surfaces that put the tools in reach — mobile and terminal. Both run inference on-device with no cloud round-trip.
Mobile app
Android. Free base with local inference, document RAG, and journaling; paid modules add larger models and advanced pipelines. Runs entirely on-device.
in build · v0.3.2 soon · downloads
Terminal CLI
Command-line entry into the same toolset: code-aware search, file editing, repo-aware context, and local model routing. Free MIT base; advanced workflows behind paid modules.
in build · downloads
The math behind the tools
The algorithms are documented in the journal. Where they aren't yet, we're writing them up. We don't ship anything whose math we can't explain in public.