PyPI99Exceptionalhealth index

github/spec-kit💫 Toolkit to help you get started with Spec-Driven Development
Python★ 137.2KSep 16, 2026
npm96Exceptionalhealth index
TypeScript★ 69.5K↓ 1.8M/moSep 19, 2026
RubyGems · Go94Exceptionalhealth index
Ruby★ 3,090Sep 11, 2026
PyPI89Excellenthealth index

marshmallow-code/apispecA pluggable API specification generator. Currently supports the OpenAPI Specification (f.k.a. the Swagger specification)..
Python★ 1,219Sep 14, 2026
PyPI88Excellenthealth index
Python★ 32↓ 27.1K/moSep 12, 2026
npm88Excellenthealth index

readmeio/oasComprehensive tooling for working with OpenAPI definitions.
TypeScript★ 398↓ 14.1M/moAug 27, 2026
npm86Excellenthealth index

w3c/echidnaNew publication workflow at W3C — main component
HTML · JavaScript★ 45Sep 13, 2026
PyPI · npm · crates.io83Excellenthealth index

statecrafting/spec-spineA typed, hash-verifiable ledger of who-owns-what, sitting underneath a codebase so that many agents (or people) can work in parallel without trampling each other.
Rust★ 12↓ 6,280/moOct 12, 2026
npm80Excellenthealth index
JavaScript★ 352↓ 44K/moSep 11, 2026
crates.io · npm80Excellenthealth index

CorvidLabs/spec-sync📐 Bidirectional spec-to-code drift detection. Rust CLI and MCP server that catches undocumented exports and vanished symbols in CI.
Rust★ 6↓ 97/moSep 8, 2026
Packagist · PyPI80Excellenthealth index
PHP · Gherkin★ 1,904↓ 250.6K/moOct 20, 2026
NuGet80Excellenthealth index
C#★ 0Sep 11, 2026
JavaScript★ 125↓ 367M/moSep 16, 2026
JavaScript★ 1,207↓ 26.8M/moSep 17, 2026
Go · RubyGems75Goodhealth index
Go★ 143Sep 18, 2026

flex-development/marka specification for building syntax-aware parsers, compilers, and text processing systems
TypeScript★ 1↓ 2,454/moSep 18, 2026
Python★ 10↓ 71.9M/moSep 9, 2026
Python★ 2↓ 3,368/moOct 3, 2026

microlinkhq/oembed-specParser and helpers for the oEmbed specification — validate and normalize provider responses.
JavaScript★ 23↓ 5,314/moSep 13, 2026
TypeScript★ 0↓ 19.3K/moSep 15, 2026
JavaScript★ 0↓ 499/moSep 12, 2026
Packagist67Goodhealth index
PHP★ 642↓ 150.1K/moSep 17, 2026
C#★ 6Aug 28, 2026

bbc/speculateAutomatically generates an RPM Spec file for your Node.js project
JavaScript★ 68↓ 5,094/moSep 20, 2026
Packagist65Goodhealth index

kahlan/kahlan:heavy_check_mark: PHP Test Framework for Freedom, Truth, and Justice
PHP★ 1,148↓ 19.4K/moSep 12, 2026
TypeScript · JavaScript★ 0↓ 21.3K/moSep 10, 2026
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npm · RubyGems63Moderatehealth index

LeonTing1010/tapCapture a logged-in browser task once — replay it forever at zero LLM tokens. Local-first browser-automation MCP for Claude Code, Cursor & any MCP host; credentials never leave your machine.
JavaScript · TypeScript★ 17↓ 334/moSep 10, 2026
npm63Moderatehealth index
JavaScript★ 21↓ 333M/moSep 16, 2026
npm59Moderatehealth index

hachure-org/specHachure — an open trust format. Specification, normative schemas, and conformance test vectors. npm: hachure
JavaScript★ 0↓ 29.8K/moSep 12, 2026