1.public-api-lists / public-api-lists
A curated list of free public APIs — searchable, community-maintained, with a free JSON API.
+324 stars
from 15,953 · score 5.78
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Ranked by Attention Score: stars gained over the last 30 complete days
10 repositories by Attention Score · Oct 4, 2026 – Nov 2, 2026 (UTC)
2.openaccountants / openaccountants
Open tax skills for AI: 2,250 skills across 266 jurisdictions, every figure cited to the law. Works in ChatGPT, Claude, Cursor and any MCP client.
- tax
- accounting
- ai
- llm
- open-source
- vat
- +14 more
+45 stars
from 424 · score 3.83
3.ckan / ckan
CKAN is an open-source DMS (data management system) for powering data hubs and data portals. CKAN makes it easy to publish, share and use data. It powers catalog.data.gov, open.canada.ca/data, data.humdata.org among many other sites.
+26 stars
from 5,124 · score 3.30
4.datopian / portaljs
🌀 AI-native framework for building data portals. Scaffold a full portal from a brief and load datasets in minutes with agentic skills — any backend (CKAN, GitHub, Frictionless).
+14 stars
from 2,356 · score 2.71
5.MobilityData / gbfs
Documentation for the General Bikeshare Feed Specification, a standardized data feed for shared mobility system availability. Maintained by MobilityData
+5 stars
from 920 · score 1.79
6.MLT-OSS / FirstData
The World's Most Comprehensive, Authoritative, and Structured Open Source Data Source Knowledge Base
+4 stars
from 182 · score 1.61
7.kr-stn / awesome-sentinel
curated list of awesome tools, tutorials and APIs for Copernicus Sentinel satellite data
+3 stars
from 583 · score 1.39
8.OneBusAway / onebusaway-application-modules
The core OneBusAway application suite.
+1 stars
from 240 · score 0.69
9.public-transport / friendly-public-transport-format
A format for APIs, libraries and datasets containing and working with public transport data.
+1 stars
from 141 · score 0.69
10.osPlanning / omx
Open Matrix (OMX)
+1 stars
from 55 · score 0.69