1.Fission-AI / OpenSpecSpec-driven development (SDD) for AI coding assistants.specaicontext-engineeringengineeringplanningprd+4 moreTypeScriptMIT74K total5K forks+10,409 starsfrom 63,205 · score 9.25
2.EveryInc / compound-engineering-pluginOfficial Compound Engineering plugin for Claude Code, Codex, Cursor, and morecompoundengineeringTypeScriptMIT26K total2.1K forks+2,128 starsfrom 23,702 · score 7.66