1.Fission-AI / OpenSpec
Spec-driven development (SDD) for AI coding assistants.
+10,409 stars
from 63,205 · score 9.25
Trending repositories
Ranked by Attention Score: stars gained over the last 90 complete days
20 repositories by Attention Score · Aug 5, 2026 – Nov 2, 2026 (UTC)
2.yonaskolb / XcodeGen
A Swift command line tool for generating your Xcode project
+249 stars
from 8,666 · score 5.52
3.denysdovhan / wtfjs
🤪 A list of funny and tricky JavaScript examples
+111 stars
from 37,575 · score 4.72
4.cloudevents / spec
CloudEvents Specification
+108 stars
from 5,838 · score 4.69
5.asyncapi / spec
The AsyncAPI specification allows you to create machine-readable definitions of your asynchronous APIs.
+82 stars
from 5,251 · score 4.42
6.tc39 / proposals
Tracking ECMAScript Proposals
+78 stars
from 19,124 · score 4.37
7.standard-webhooks / standard-webhooks
The Standard Webhooks specification
+73 stars
from 1,713 · score 4.30
8.CesiumGS / 3d-tiles
Specification for streaming massive heterogeneous 3D geospatial datasets :earth_americas:
+60 stars
from 2,576 · score 4.11
9.WebAssembly / spec
WebAssembly specification, reference interpreter, and test suite.
+41 stars
from 3,427 · score 3.74
10.projectfluent / fluent
Fluent — planning, spec and documentation
+25 stars
from 1,664 · score 3.26
11.estree / estree
The ESTree Spec
+23 stars
from 5,415 · score 3.18
12.fantasyland / fantasy-land
Specification for interoperability of common algebraic structures in JavaScript
+20 stars
from 10,224 · score 3.04
13.adrg / xdg
Go implementation of the XDG Base Directory Specification and XDG user directories
+17 stars
from 1,007 · score 2.89
14.biolink / biolink-model
Schema and generated objects for biolink data model and upper ontology
+9 stars
from 258 · score 2.30
15.jeduden / mdsmith
fast, auto-fixing Markdown linter and formatter. Checks style, readability, structure, and cross-file integrity.
+8 stars
from 12 · score 2.20
16.Esri / i3s-spec
This repository hosts the specification for Scene Layers which are containers for arbitrarily large amounts of geographic data. The delivery and persistence model for Scene Layers, referred to as Indexed 3d Scene Layer (I3S) and Scene Layer Package (SLPK) respectively, are specified.
+5 stars
from 335 · score 1.79
17.Esri / cim-spec
This repository hosts the specification for the Cartographic Information Model
+4 stars
from 92 · score 1.61
18.fantasyland / static-land
Specification for common algebraic structures in JavaScript based on Fantasy Land
+2 stars
from 774 · score 1.10
19.etorreborre / specs2
Software Specifications for Scala
+1 stars
from 734 · score 0.69
20.zephyr-data-specs / GMNS
General Modeling Network Specification
+1 stars
from 134 · score 0.69