30 Free Public APIs for Developers

Explore 30 powerful, free public APIs to level up your projects. From weather data to recipe databases, discover the best APIs for web developers and app creators.

Introduction

APIs (Application Programming Interfaces) are essential tools in a developer’s toolkit, offering access to data and functionality without having to build from scratch. Here’s a curated list of 30 free public APIs covering a wide range of functionalities, from weather updates to finance tracking. Whether you’re a beginner or an experienced developer, these resources can enrich your projects and streamline development.

1. OpenWeather API

Website: openweathermap.org/api
Get detailed weather data for any location in the world. Perfect for adding real-time weather updates to websites or apps.

2. AppHarbor

Website: appharbor.com/pricing
A continuous delivery service that lets you deploy .NET apps in the cloud. It’s free to get started with limited resources.

3. Railway

Website: railway.app
Railway provides an easy way to deploy infrastructure as code, allowing developers to host, deploy, and manage apps and services.