OpenSpec
Plan mode for complex features
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About
OpenSpec is an open-source, spec-driven framework. We help developers plan complex features by creating lightweight spec documents that serve as durable context for their coding agents. With 20k+ GitHub stars, we’re one of the leading spec-driven frameworks, used by thousands of developers and teams to plan and ship with the coding agent of their choice. Our philosophy is simple: keep planning lightweight and iterative, and match how software actually gets built, messy, evolving, and real, without dragging teams into rigid, bureaucratic workflows. OpenSpec is a Y Combinator company (Winter 2026). YC-listed status: Active.
- Website
- openspec.dev
- Location
- Sydney, NSW, Australia
- Added via
- web
- Ownership
- unclaimed
Where to go
Products
- OpenSpec — Open-source spec-driven framework that helps developers plan complex features in lightweight Markdown documents used as durable context for AI coding agents. · Open Source · Open Source
Links
- Y Combinator profileycombinator