walgit turns any S3 or GCS bucket into a stateless Git server — one Rust binary, MIT-licensed, an open implementation of Cursor's 'Continuity' design.
DeepSeek's dsh agent harness (MIT) hit ~165K GitHub stars in six days; every part — model adapter, tools, agent loop — is a replaceable Cordis plugin. Developer preview.
Ratel (ratel-ai/ratel, 186★, Apache-2.0 core + MIT SDKs) ships an in-process BM25 tool catalog. On BFCL v3: ~87% fewer tokens, tool selection within ±5 points.
Apache-2.0 Leanstral 1.5 (119B/6B MoE) saturates miniF2F, hits 587/672 PutnamBench, sets SOTA on FATE-H and FATE-X, and finds 5 unknown bugs in 57 Rust repos — at ~$4 per problem.
Apache-2.0 119B/6B-active MoE prover from Mistral saturates miniF2F, hits SOTA on FATE-H (87%) and FATE-X (34%), and uncovers 5 previously unknown Rust bugs across 57 repos — all for about $4 per problem.
cognee is an Apache-2.0 open-source AI memory platform for agents: a self-hosted knowledge graph engine with a four-method API (remember, recall, forget, improve) and a Claude Code plugin.
CodeBurn (getagentseal/codeburn) reads the session files your AI coding tools already write, breaks down every token and dollar across 31 integrations, MIT, no proxy, no API key.
DeepSeek published DeepSpec, a full-stack MIT-licensed codebase for training and evaluating draft models for speculative decoding, bundling DSpark, DFlash, and Eagle3.
can1357/oh-my-pi: a Rust-based terminal AI coding agent (fork of Mario Zechner's pi-mono) with Hashline edits, an advisor model, 40+ providers, 18-hour release cadence.
Headroom v0.27.0 is an Apache-2.0 context-compression layer for AI agents: library, proxy, agent wrapper, and MCP server. Published savings reach 92% on code search and SRE debugging.
GitHub JuliusBrussee/caveman: a TypeScript skill for 30+ agent platforms that asks the agent to drop filler. 75k stars, MIT, 65% output-token reduction.
MIT repository (crewAIInc/crewAI) with 53,499 stars and 7,488 forks as of June 14, 2026. Crews+Flows architecture, 14.27M PyPI downloads in the last month, stable release 1.14.7 from June 11, 2026.
MIT Python library (567-labs) for extracting validated Pydantic objects from any LLM. 13.2k stars, 108 releases, 15+ providers. v1.15.2 adds log redaction.
Hugging Face's open-source Python agent library where the model writes executable code instead of JSON. 27.8k stars, Apache 2.0, v1.26.0 (May 29, 2026). Remote sandboxing is mandatory.
MIT Chinese guide from Datawhale with 27 chapters on LangChain, LangGraph, MCP, RAG, Skills, and fine-tuning. 1.9k stars, two completed projects in May 2026. Code is Python; prose is Chinese.