Open Source Radar — September 11: skills go open, models go home
The open-source story today is about ownership: who holds the model, who holds the agent's instructions, and who keeps the knowledge after the chat ends. Five picks from the daily board.
Colibrì (C, 27,632 stars) — The most ambitious project on the board: an inference engine, in pure C with zero dependencies, that runs frontier mixture-of-experts models up to 2.8 trillion parameters on hardware you already own. The trick is treating your SSD, RAM, and VRAM as one memory hierarchy — the always-needed parts of the model sit in RAM, and the thousands of routed experts stream from disk on demand, like a JIT compiler that compiles hot paths just in time. The author's demo shows GLM-5.2 (744B parameters) answering at 4 tokens per second from a machine with about 10 GB of resident memory, and the project honestly publishes which optimizations are measured and which are still hypotheses. It's research-grade rather than plug-and-play, and disk speed matters enormously — but if you want to hold a frontier-class open-weights model instead of renting it by the token, this is the most credible attempt we've seen.
OpenMAIC (TypeScript, 35,680 stars) — Tsinghua's open multi-agent interactive classroom: one prompt in, a complete multi-agent course out. Director agents orchestrate the curriculum, then agents generate slides, quizzes, simulations, 3D visualizations, and voice narration, and the classroom plays back as an interactive lesson rather than a wall of text. Version 1.0.0 landed August 27 with an agent workbench — you can now chat with an agent that plans, builds, and revises the whole course, uploading your own documents, audio, and video as source material. It's provider-neutral (bring your own models), MIT-licensed, deployable with one click, and backed by a published paper. If you've been waiting for the "AI tutor" to become something a teacher or a self-learner can actually run, this is the furthest along.
vercel-labs/skills (TypeScript, 31,358 stars) — Skills became the standard way to teach coding agents new tricks; this is the tool that made them portable. One CLI installs any skill from any git repo into any of 75+ supported agents — Claude Code, Codex, Cursor, OpenCode — by symlinking a canonical copy into each agent's skills directory, so one install serves every tool on your machine. There's a discovery layer at skills.sh, a mode that runs a skill without installing it, and project-scoped installs that commit with your repo so your whole team shares the same setup. MIT-licensed, and trending because the skills ecosystem itself is exploding. If you've been copying skill files between agents by hand, this is the fix.
LLM Wiki (TypeScript, 18,404 stars) — Andrej Karpathy described a pattern for a personal knowledge base that an LLM incrementally builds and maintains instead of answering from scratch every time; nash_su built it into a full cross-platform desktop app. It ingests your PDFs, Office files, e-books, web clippings, even images (with vision-model captions), and compiles them into an interlinked wiki with source-traceable pages, a knowledge graph, and community detection that surfaces clusters and gaps. The key design bet is that knowledge is compiled once and kept current, not re-derived per query — and the wiki directory stays Obsidian-compatible, so your data never locks in. A local API and MCP server let your coding agent query the wiki read-only. GPLv3. The closest thing to RAG that actually gets smarter the longer you use it.
OpenClaw integrations are quietly eating the ecosystem — Two of today's five picks ship first-class hooks for OpenClaw, and that's the pattern worth watching: OpenMAIC lists OpenClaw integration as a headline feature, LLM Wiki ships its agent skill with the same one-command installer Vercel's tool standardized. Skills stopped being a Claude Code feature and became the packaging everyone targets. The irony is that the agents themselves are commoditizing while the skills on top are where projects now compete. Worth watching this week: whether the agent-skills specification consolidates fast enough that one skill really does run everywhere.
Building with any of these? Tell us in the comments.
Sources: Colibrì (GitHub) · OpenMAIC (GitHub) · skills (GitHub) · skills.sh · LLM Wiki (GitHub) · Karpathy's llm-wiki pattern
