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Top 23 spec-driven-development Open-Source Projects
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Project mention: The Enso Method alternatives - superpowers, gsd-core, agentic_coding_flywheel_setup, and BMAD-METHOD | libhunt.com/r/enso-method | 2026-10-13
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AppSignal
AppSignal knows why the f*#k it crashed. Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
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gentle-ai
Gentle-AI configures the AI coding agents you already use: Claude Code, Cursor, OpenCode, Codex, Pi, and more. Choose persistent memory, Organic-Driven Development, curated skills, MCP servers, personas, and optional bounded review. Open source, no agent lock-in.
One that caught my attention is Gentle AI by Gentleman Programming. It's an ecosystem configurator that transforms AI coding agents into comprehensive development systems. It takes a different approach to SDD: instead of one AI doing everything, it delegates to specialized sub-agents for each phase — explore, specify, design, implement, verify. One command sets up the entire workflow, and it pairs perfectly with SpecKit Companion's visual interface.
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cc-sdd
Turn approved specs into long-running autonomous implementation. A minimal, adaptable SDD harness with Agent Skills for Claude Code, Codex, Cursor, Copilot, Windsurf, OpenCode, Gemini CLI, and Antigravity.
Project mention: I Refused to Write Specs Until Claude Code Generated Wrong Code Three Times | dev.to | 2026-05-19This isn't original to me. The 2026 wave of spec-driven tooling (OpenSpec, cc-sdd, amux, Kiro) is all built on the same observation. GitHub Copilot Workspace doesn't even let you skip the step: it generates an editable "proposed specification" before it touches code, because the team that built it figured out that the spec is the only artifact in the workflow that the human can actually review.
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pilot-shell
Professional context and harness engineering for Claude Code and OpenAI Codex. Build production-grade software with spec-driven development, TDD, persistent memory, quality gates, code intelligence, human oversight, and end-to-end verification.
Project mention: Pilot Shell: Spec-driven plans; enforced quality gates; persistent knowledge | news.ycombinator.com | 2026-07-03 -
spec-kitty
Spec-Driven Development with organizational governance. Specs tell AI agents what to build; Charter governs how they build it. Git-native missions, enforceable workflows, and consistent engineering standards across AI coding agents and harnesses.
Spec Kitty is an open source SDD framework for agentic coding. Try it out!
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Project mention: We need a deterministic Governance Layer for AI coding Agents | dev.to | 2026-06-09
I built Get Tasks Done from get-shit-done to provide a lightweight, deterministic state machine layer for AI-assisted development. It bridges the gap between high-level human intent and execution AI agents by turning specifications into granular execution tasks using leveraging a GitHub-native integration. Instead of a fluid, unpredictable implementation step, GTD structures development into explicit, auditable stages: Product Intent ➔ Markdown Specs ➔ Granular GitHub Issues ➔ Atomic PRs
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cavekit
A Claude Code plugin that turns natural language into blueprints, blueprints into parallel build plans, and build plans into working software with automated iteration, validation, and cross-model peer review.
Project mention: Why I’m Cautious About AI Gateways After My Bifrost Collaboration | dev.to | 2026-04-29🪨 Caveman Ecosystem · caveman talk less (you are here) · cavemem remember more · cavekit build better
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Project mention: Spec-Driven Development (SDD): De la improvisación a la ingeniería con agentes de IA | dev.to | 2026-09-13
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DevoxxGenieIDEAPlugin
DevoxxGenie is an agentic plugin for IntelliJ IDEA that uses local LLM's (Ollama, LMStudio, GPT4All, Jan and Llama.cpp) and Cloud based LLMs to help review, test, explain your project code. Latest version now also supports Spec Driven Development with CLI Runners.
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OpenLore
Deterministic, local-first memory and guardrails for AI coding agents with no LLM in the hot path.
Project mention: OpenLore: Deterministic, local-first memory and guardrails for AI coding agents | news.ycombinator.com | 2026-07-29 -
Project mention: ProductSpec – Open standard for software intent in the AI agent era | news.ycombinator.com | 2026-09-15
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Project mention: Introducing LeanSpec: A Lightweight SDD Framework Built from First Principles | dev.to | 2025-11-27
That search led me through several existing tools—Kiro, Spec Kit, OpenSpec—and eventually to building LeanSpec, a lightweight Spec-Driven Development framework that hits v0.2.7 today with 10 releases in under three weeks. This post shares why I built it, what makes it different, and how you can try it yourself.
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Docs: https://ariel-frischer.github.io/autospec/
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adlc-team-skills
Agent skills for the Agentic SDLC: team lifecycle (team-boot, team-learn, team-init, team-repair), software factory, evals, CDR lifecycle with confidence scoring, and ADR/PDR/ChDR decision records. Works with Claude Code, Codex, OpenCode, Cursor, Copilot, and more.
Project mention: Agent skills that bring team coding standards to Claude Code and Codex | news.ycombinator.com | 2026-08-04 -
speckit-companion
VS Code extension for spec-driven development — manage specs, workflows, and steering docs for AI CLI tools (Claude Code, Gemini CLI, Copilot CLI)
The public backlog tracks every step as it merges. Star the repo to follow along, and I will see you at Build Log 4.
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SpecJudge
Local-first CLI that reads your Spec-Driven Development artifacts and recommends the best value-for-money AI model to implement them. Powered by Ollama — your specs never leave your machine.
Project mention: Specjudge, tells you which model you should use for each task | news.ycombinator.com | 2026-08-06 -
okto-pulse
Local-first, spec-driven SDLC workbench with governance gates, knowledge graphs, and MCP for AI coding agents.
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spec-coding-mcp
Transform feature ideas into production-ready code through systematic Spec-Driven Development 通过系统化的**规格驱动开发**，将功能想法转化为可投入生产的代码
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night-watch-cli
AI agent that implements your specs, opens PRs, and reviews code overnight. Queue GitHub issues or PRDs, wake up to pull requests.
Project mention: Show HN: EmergingRepos – finding repos that are just starting to get momentum | news.ycombinator.com | 2026-05-04 -
Vibe-Coding-Production-Kit
Production-grade vibe coding framework with specs, architecture, AI agents, testing, security, code review, CI/CD, and battle-tested workflows — from idea to production.
Project mention: Vibe Coding Production Kit – a production workflow for AI coding agents | news.ycombinator.com | 2026-09-24 -
pi-sdd-kit
Spec-Driven Development skill pack for the Pi coding agent: steering docs, .status gates, EARS, and a PRD→SPEC→TASKS→EXEC→REVIEW pipeline.
Project mention: I built a spec-driven workflow for my AI coding agent. Here is what actually mattered. | dev.to | 2026-07-03So I stopped prompting and started specifying. I packaged the workflow I settled on into an open-source kit for the Pi coding agent, called pi-sdd-kit. This post is about the two design decisions that actually earned their keep. The rest is detail.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
spec-driven-development discussion
spec-driven-development related posts
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The Enso Method alternatives - superpowers, gsd-core, agentic_coding_flywheel_setup, and BMAD-METHOD
5 projects | 13 Oct 2026 -
Pay for the plan, not the typing
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Two things nobody was watching
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Build Log 3: Turbo Mode and the Fast Path
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A new agent, and nothing else moved
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A YAML Comment Truncated an AI Coding Success Criterion — and the Gate Still Passed
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Building with mini, Part 9/9 (finale): Onboarding a running project — import-gsd, audit, map
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A note from our sponsor - SaaSHub
www.saashub.com | 15 Oct 2026
Index
What are some of the best open-source spec-driven-development projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | gsd-core | 10,444 |
| 2 | gentle-ai | 7,698 |
| 3 | cc-sdd | 3,710 |
| 4 | pilot-shell | 2,085 |
| 5 | spec-kitty | 1,678 |
| 6 | get-shit-done-redux | 1,199 |
| 7 | cavekit | 786 |
| 8 | hello-sdd | 689 |
| 9 | DevoxxGenieIDEAPlugin | 684 |
| 10 | mcp-server-spec-driven-development | 437 |
| 11 | OpenLore | 320 |
| 12 | ProductSpec | 308 |
| 13 | leanspec | 296 |
| 14 | autospec | 144 |
| 15 | adlc-team-skills | 141 |
| 16 | speckit-companion | 97 |
| 17 | SpecJudge | 57 |
| 18 | okto-pulse | 53 |
| 19 | spec-coding-mcp | 50 |
| 20 | night-watch-cli | 42 |
| 21 | Vibe-Coding-Production-Kit | 36 |
| 22 | pi-sdd-kit | 34 |
| 23 | get-shit-done-redux | 31 |
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Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
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