1.Fission-AI / OpenSpec
Spec-driven development (SDD) for AI coding assistants.
+658 stars
from 72,956 · score 6.49
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12 repositories by Attention Score · Oct 27, 2026 – Nov 2, 2026 (UTC)
2.yonaskolb / XcodeGen
A Swift command line tool for generating your Xcode project
+25 stars
from 8,890 · score 3.26
3.CesiumGS / 3d-tiles
Specification for streaming massive heterogeneous 3D geospatial datasets :earth_americas:
+8 stars
from 2,628 · score 2.20
4.cloudevents / spec
CloudEvents Specification
+6 stars
from 5,940 · score 1.95
5.asyncapi / spec
The AsyncAPI specification allows you to create machine-readable definitions of your asynchronous APIs.
+6 stars
from 5,327 · score 1.95
6.standard-webhooks / standard-webhooks
The Standard Webhooks specification
+5 stars
from 1,781 · score 1.79
7.projectfluent / fluent
Fluent — planning, spec and documentation
+2 stars
from 1,687 · score 1.10
8.tc39 / proposals
Tracking ECMAScript Proposals
+1 stars
from 19,201 · score 0.69
9.WebAssembly / spec
WebAssembly specification, reference interpreter, and test suite.
+1 stars
from 3,467 · score 0.69
10.etorreborre / specs2
Software Specifications for Scala
+1 stars
from 734 · score 0.69
11.Esri / cim-spec
This repository hosts the specification for the Cartographic Information Model
+1 stars
from 95 · score 0.69
12.excessive / iqm-exm
IQM & EXM model format specs, Blender exporter, and LÖVE loader.
+1 stars
from 42 · score 0.69