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Spec-driven development

Author
Tom Rochette
Table of Contents

Specification-first workflows: the movement’s process layers and toolkits, sized from brownfield delta proposals to platform bets you rent.

  • AI-DLC - AWS Labs’ harness-neutral lifecycle engine, 5 phases and 33 stages with approval gates and an audit trail, one methodology across seven agents.
  • Arc Kit - the solo-maintained 76-command enterprise-architecture governance harness (strategy through assurance, HM Treasury documents, Wardley Maps, citation-marked drafts) across seven agent formats, about 2.3k stars.
  • BMad Method - the agile method that sizes ceremony to the change, roles and retrospectives included.
  • cc-sdd - the Kiro-inspired installer that puts a 17-skill spec workflow inside eight agents, with per-task independent review in autonomous mode.
  • GitHub Spec Kit - the MIT process-plus-CLI layer that made specs-before-agents a movement, agent-neutral, about 141k stars.
  • GSD - the 64k-star get-shit-done workflow system for Claude Code, archived and continuing as open-gsd/gsd-core.
  • Intent-Router - the MIT single skill that compiles a vague request into a typed IntentSpec contract and checks the delivered work against it one constraint at a time, its 1,017-star spike deflated to 158 by an apparent engagement purge and re-inflating to 239 on fresh-account engagement.
  • OpenSpec - the brownfield spec toolkit whose delta proposals archive into a living ledger, about 2.9M npm downloads a month.
  • Spec Kitty - the Spec Kit-derived governance CLI whose work packages run in isolated git worktrees behind review gates, about 1.7k stars.
  • Spec-Driven Develop - the solo pure-Markdown skills pack that runs large changes as one GitHub Issue per task and one batch PR per phase, with a drift score that halts plan decay, 986 stars and quiet since July.
  • Superpowers - the mandatory-workflow skill suite installed in 16 harnesses behind the category’s largest adoption figure, about 299k stars, with 7.0’s rebuilt brainstorming sizing the ceremony to the work.
  • Tessl - the $125M platform bet that spec-driven development is infrastructure you rent.
  • Vibe Coding Prompt Template - the zero-install prompt pack that turns an idea into research, a PRD, and a tech design in any chat tool before an agent writes code, about 3.1k stars.

Its members are compared on shared rows in the Spec Driven Development Feature Matrix.

Changes
#

  • 2026-08-26 - Added GitHub Spec Kit.
  • 2026-08-27 - Added BMad Method.
  • 2026-08-27 - Added OpenSpec.
  • 2026-08-27 - Added Tessl.
  • 2026-09-16 - Added GSD.
  • 2026-10-06 - Added AI-DLC.
  • 2026-10-06 - Added cc-sdd.
  • 2026-10-06 - Added Spec Kitty.
  • 2026-10-07 - Added Vibe Coding Prompt Template.
  • 2026-10-09 - Added Superpowers.
  • 2026-10-10 - Added Intent-Router.
  • 2026-10-11 - Added Spec-Driven Develop.
  • 2026-10-13 - Added Arc Kit.