Free Public APIs

A collection of 364 Free Public APIs for Students and Developers.

Tested every single day.

Science

Explore the universe of scientific APIs, offering data and tools for research, discovery, and innovation—from the tiniest particles to the vastness of space.

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🛰️Satellite TLE Data

This API provides access to Two-Line Element (TLE) data for various satellites. It allows users to retrieve the latest orbital information for tracking satellites in real-time.

1 Endpoint

95 API Health

👵Oldest People Records API

This API provides information about the oldest living person and the oldest person ever recorded. It manages local data, allowing updates and constraints such as birth date limits and country of origin.

2 Endpoints

95 API Health

🔢Numbers API

The Numbers API provides interesting facts about numbers covering trivia, math, dates, and years. Users can easily access these facts by specifying the number and type in a simple URL structure.

1 Endpoint

95 API Health

🚀SpaceX REST API

Open Source REST API for launch, rocket, core, capsule, starlink, launchpad, and landing pad data.

1 Endpoint

95 API Health

📐Math Function Parser

This API provides functionalities to parse and resolve mathematical expressions. It includes endpoints to tokenize expressions, resolve them, and return their abstract syntax tree (AST).

1 Endpoint

95 API Health

🚀Launch Library 2

The Launch Library 2 API provides access to a comprehensive database of rocket launches, space events, and astronauts. It serves both orbital and suborbital launches, offering data on launch service providers, events, agencies, and more, all accessible for free within certain request limits.

3 Endpoints

90 API Health

💻Techy

Generate tech-savvy phrases

1 Endpoint

90 API Health

🚀speedscale.com

Mock complex API / database dependencies and production load, modeled after real user behavior - without writing scripts.

Speedscale enables developers to record and playback realistic, sanitized production conditions on their laptop, without delays or having to search for good data.

🚀CelesTrak GP Data

CelesTrak provides access to General Perturbations (GP) orbital data, including Two-Line Element Sets (TLEs) and newer formats like XML and JSON. This data is crucial for tracking objects in space and supports various queries to retrieve specific orbital information based on catalog numbers, designators, and names.

1 Endpoint

60 API Health