Libraries.io API alternatives

Metadata, dependencies and release history for open-source packages across 30+ managers. If it doesn't fit your project, here are the 10 best free Open Source Projects APIs to use instead in 2026, out of 10 in the directory.

For reference, Libraries.io API: Callable from the browser (CORS) · HTTPS.

1
GitHub Contribution Chart Generator API
Online · 657 ms
Create an image of your GitHub contributions.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
2
GitHub ReadMe Stats API
Online · 729 ms
Add dynamically generated statistics to your GitHub profile ReadMe.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
3
Metabase API
Online · 650 ms
An open source Business Intelligence server to share data and analytics inside your company.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
4E
Evil Insult Generator API
Online · 1098 ms
Evil Insults. A free open source projects API by Evil Insult Generator.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
5
Neuronto ARD Registry API
Online · 766 ms
Search index of MCP servers, agents and APIs, with the tools each server actually exposes.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
6
Drupal.org API
Online · 77 ms
Drupal.org. A free open source projects API by drupal.org.
- No API key needed
- Fast: 77 ms response
- HTTPS
No authHTTPSCORS ?
7
Shields API
Online · 791 ms
Concise, consistent, and legible badges in SVG and raster format.
- No API key needed
- HTTPS
No authHTTPSCORS ?
8D
Datamuse API
Online · 810 ms
Word-finding query engine. A free open source projects API by Datamuse API.
- No API key needed
- HTTPS
No authHTTPSCORS ?
9
Creative Commons Catalog API
Online · 3612 ms
Search among openly licensed and public domain works.
- Callable from the browser (CORS)
- HTTPS
OAuthHTTPSCORS
10
Countly API
Online · 403 ms
Comprehensive API reference for Countly Enterprise.
- No API key needed
No authNo HTTPSCORS ?

Libraries.io API vs alternatives

Libraries.io API compared with its alternatives
API	API key	HTTPS	CORS	Uptime	Response	Rating
Libraries.io	Required	Yes	Yes	Up	2099 ms	Not rated
GitHub Contribution Chart Generator	No	Yes	Yes	Up	657 ms	Not rated
GitHub ReadMe Stats	No	Yes	Yes	Up	729 ms	Not rated
Metabase	No	Yes	Yes	Up	650 ms	Not rated
Evil Insult Generator	No	Yes	Yes	Up	1098 ms	Not rated
Neuronto ARD Registry	No	Yes	Yes	Up	766 ms	Not rated
Drupal.org	No	Yes	Unknown	Up	77 ms	Not rated
Shields	No	Yes	Unknown	Up	791 ms	Not rated
Datamuse	No	Yes	Unknown	Up	810 ms	Not rated

Libraries.io API alternatives FAQ

What is the best free alternative to the Libraries.io API in 2026?

The top-ranked free alternatives to the Libraries.io API are GitHub Contribution Chart Generator API, GitHub ReadMe Stats API and Metabase API, all in the Open Source Projects category. Rankings combine access (API key, HTTPS, CORS), daily uptime checks and developer ratings.

Is there a Libraries.io API alternative that doesn't need an API key?

Yes: GitHub Contribution Chart Generator API, GitHub ReadMe Stats API and Metabase API work without an API key, unlike the Libraries.io API, which uses apiKey authentication.

How many Open Source Projects APIs are similar to the Libraries.io API?

The directory lists 10 other free Open Source Projects APIs. This page compares the top ones side by side.