OpenSpec established

Core approach

Each unit of work is a change folder under openspec/changes/ containing a proposal, requirement deltas (ADDED/MODIFIED blocks with WHEN/THEN scenarios), a design doc, and a task list. On completion the change is archived and its deltas merge into living specs under openspec/specs/. The workflow was recently rebuilt around the artifact-guided "OPSX" commands.

Workflow

1. /opsx:explore — optional no-stakes thinking partner to shape the idea
2. /opsx:propose — create openspec/changes/<id>/ with proposal, spec deltas, design, and tasks
3. /opsx:apply — implement the task checklist
4. /opsx:sync — reconcile artifacts with reality
5. /opsx:archive — archive the change and update the living specs
6. Expanded profile adds /opsx:new, /opsx:continue, /opsx:ff, /opsx:verify, /opsx:bulk-archive, /opsx:onboard

Supported tools

• Claude Code
• Cursor
• Codex
• Gemini CLI
• GitHub Copilot
• Windsurf
• Amazon Q Developer
• Kiro
• OpenCode
• RooCode
• Cline
• Qwen Code

Tracked projects using OpenSpec

• Akka.NET

  drift: moderate

  The canonical actor-model implementation for .NET — a major, long-running OSS project routing its modernization work through OpenSpec change folders.

  akkadotnet/akka.net · using OpenSpec · ★ 5.1K stars · pushed yesterday · Reviewed yesterday

  View project →

• Desktop CC GUI

  drift: none

  An open-source desktop client (Tauri 2 + React 19 + Rust) that wraps Claude Code, Codex CLI and other AI coding tools in a GUI — running the heaviest OpenSpec workspace we track, with hundreds of archived change folders and strict validation gates.

  zhukunpenglinyutong/desktop-cc-gui · using OpenSpec · ★ 4.1K stars · pushed 15 hours ago · Reviewed last month

  View project →

• MioSub

  drift: high

  One-stop automated subtitle generator covering downloading, transcription, translation, and hardcoding end to end — a TypeScript/React/Electron app built on Google Gemini and Whisper.

  corvo007/MioSub · using OpenSpec · ★ 807 stars · pushed last month · Reviewed last month

  View project →

• OpenSpec

  drift: none

  The OpenSpec CLI and toolkit itself, developed with its own change-folder workflow — "OpenSpec is built with OpenSpec".

  Fission-AI/OpenSpec · using OpenSpec · ★ 66.9K stars · pushed 5 hours ago · Reviewed 2 months ago

  View project →

Notes

OpenSpec’s change-folder model is the clearest instance of “diff-based” specs: instead of one big spec that slowly rots, every change carries its own requirement deltas that merge into living specs on archive. It is also the best-dogfooded framework we track — OpenSpec is built with OpenSpec, and its spec directory moves on the same days as its code. GitHub code search finds roughly 8,000 openspec/changes proposal files across public repos, the largest observable adopter base of the frameworks tracked here.

Added Jul 18, 2026 · Assessment last reviewed Jul 18, 2026 · How we track