A curated list of free public APIs — searchable, community-maintained, with a free JSON API.
- public-api
- api
- apis
- api-list
Repository Index
47,133 repositories indexed
1–23 of 23 · Most stars
TranslatedA knowledge graph for mathematics (primary school to high school), English (grade 3 to high school), and junior high school physics: 1,644 knowledge points, 2,403 prerequisite edges, and 6,723 questions, aligned with the curriculum standards, with an adaptive prerequisite diagnostic.
- chinese
- curriculum
- diagnostic
- edtech
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.
- python
- open-data
- data
- catalog
🌀 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).
- data-portal
- ckan
- nextjs
- open-data-portal
The world's law in git: any provision, any country, any date, and the law that wrote each word.
- git
- law
- legal-tech
- legislation
Documentation for the General Bikeshare Feed Specification, a standardized data feed for shared mobility system availability. Maintained by MobilityData
- gbfs
- bikesharing
- mobility
- scooter-sharing
Open Source Data Annotation & Labeling Tools
- ai
- annotation
- datacentric
- labelled-data
花叔开源的全球鸟类贴纸库 · Stickers for all 11,064 living bird species, with names in 43 languages and structured data
- ai-generated
- biodiversity
- birding
- birds
curated list of awesome tools, tutorials and APIs for Copernicus Sentinel satellite data
A compilation of 125+ free datasets for use in social science, applied microeconomics, data visualization, etc.
- applied-microeconomics
- data
- data-visualization
- dataset
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.
The core OneBusAway application suite.
- onebusaway
- gtfs-realtime
- transit-data
- public-transportation
Algeria's 69 wilayas, 538 dairas and 1,541 communes with Arabic/French search and historical administrative boundaries. Python and TypeScript libraries.
- administrative-divisions
- algeria
- arabic
- commune
The World's Most Comprehensive, Authoritative, and Structured Open Source Data Source Knowledge Base
- mcp
- data-sources
- ai
- awesome-list
A format for APIs, libraries and datasets containing and working with public transport data.
- transport
- open-data
- gtfs
- spec
Code for our DLS'21 paper - BODMAS: An Open Dataset for Learning based Temporal Analysis of PE Malware. BODMAS is short for Blue Hexagon Open Dataset for Malware AnalysiS.
- malware
- pe-malware
- malware-dataset
- malware-research
Open framework for calculating spatial urban sprawl indices and performing disaggregated population estimates using open data
- openstreetmap
- overpass-api
- urban-planning
- urban-sprawl
Open Matrix (OMX)
- omx
- matrix-data
- open-data
- travel-modeling
:hammer: A website for the BLDS Data Specification
- open-data
- opendata
- standards
- pemits
Public transport data in GTFS format with schemas, a data package and tests
- open-data
- data-package
- gtfs
- json-table-schemas
GTFS viewer and transit analysis tool with an Electron desktop app and a free web demo / Electron masaüstü uygulaması ve ücretsiz web demosu olan bir GTFS görüntüleme ve toplu taşıma analiz aracı
Accesses parasite occurrence records from the London Natural History Museum's Host-Parasite database, which contains over a quarter of a million helminth records.
- helminth
- parasites
- open-data
- disease-networks
GTFS Data Pipeline for TfNSW Bus Datasets
- gtfs
- gtfs-static
- gtfs-realtime
- tfnsw