One of the smartest ways to speed up project development is by using Free APIs. APIs are essential tools in modern development and give your application instant access to external data, authentication systems, AI services, and other backend capabilities, allowing developers to focus on building features instead of infrastructure.

Instead of building every feature from scratch, developers can integrate APIs to add powerful capabilities quickly and focus on creating meaningful application experiences.

Here’s a top 6 list of free APIs of my personal choice:

1. JSONPlaceholder

JSONPlaceholder is a lifesaver when you’re prototyping or building out a frontend while the backend is still under development. It provides realistic mock data for posts, users, and comments, allowing your UI to behave exactly like a production app. Since no API key or setup is required, you can start fetching data instantly.

Link: JSONPlaceholder API Api key required: No

2. GitHub API

The GitHub API is an incredibly powerful tool that lets you interact with almost every feature of GitHub programmatically. You can connect to code and projects; access repositories, user info, commit history, and more. It’s very useful for making dashboards that showcase your own github statistics in a portfolio like a list of your most active repositories. Link: Learn more about in Github API Official Docs Api key required: yes and no

3. REST Countries

REST Countries provides information about countries, including flags, currencies, languages, and population. It’s a good choice that contains a vast set of data about countries around the world. Link: restcountries Api key required: yes

4. The Movie Database

The Movie Database offers a large dataset of movies and TV, including the most populars movies, TV shows and more. It also supports the search and discover based on certain criteria. Link: themoviedb Api key required: yes

5. Spoonacular

This incredibly API offers a large set of data for ingredients, recipes, products and menu items, a great food or nutrition app could be built using this API. Link: spoonacular Api key required: yes

6. The Dog API

An API all about dogs. It offers random dog images, breeds, and facts for fun or practice projects. Link: thedogapi Api key required: yes (sign up to get your key)

From this list, I personally like the dog API and the REST country. What other free interesting APIs do you know about? Thank you for reading!