React Cosmos is a sandbox for developing and testing UI components in isolation.
- UI Components Tool
- Free • Open Source
- Self-Hosted
- React
Hello! My name is Ola. My colleague Markus and I built this site because we always wanted to find good alternatives for all the applications that are out there. And please help us by suggesting more applications. Thanks for using the site!

React Cosmos is a sandbox for developing and testing UI components in isolation.

Outlanders is a charming town-builder simulation game that lets you play as the leader of a group of regular people building a town together. Some want to survive, while others want to build amazing things. It’s up to you to guide them towards their goal.


This streaming site offers free access to a wide variety of sports events, including football leagues from all over the world such as EPL, SPL, La Liga, as well as tournaments like the Champions League, Euro and World Cup.

Are you looking for a command that you used recently? Do you want to avoid the need to write long commands over and over again? Are you looking for a tool that is able to manage your favorite commands?

Bredbandskollen is an easy way for you to immediately check the speed of your mobile or fixed internet.




A cross-platform, linkable library implementation of Git that you can use in your application.

TypeScript-first schema validation with static type inference.


Effortless animation between DOM changes (eg. list reordering) using the FLIP technique.

A fast JSON parser/generator for C++ with both SAX/DOM style API.

A Higher Order Component using react-redux to keep form state in a Redux store.



Performant, flexible and extensible forms with easy-to-use validation.

Open-source JS library to build animated charts with ease.


Dyson Sphere Program is a sci-fi simulation game with space, adventure, exploration and factory automation elements where you can build your own galactic industrial empire from scratch.



Set up a modern web app by running one command. Contribute to facebook/create-react-app development by creating an account on GitHub.

Easy Cookie Editor is a cookie manager. Control your cookies! You can add, delete, edit and search. - RadovanPelka/Easy-Cookie-Editor

Railroad Tycoon was written by game designer Sid Meier and published by MicroProse and though it shares the "Tycoon" suffix, it is not related to other Microprose games such as RollerCoaster Tycoon and Transport Tycoon, which were developed by Scottish programmer Chris...


Mashinky is a brand new transport strategy game from Czech developer Jan Zeleny. Zooming through gorgeous landscapes, utilising a traditional isometric construction mode and mastering a unique board game-like gameplay, you'll find yourself immersed in the task of building...

Vero is a social network for anyone who loves anything enough to share it – and wants control over who they share it with. Just like we do in real life.




Live scores, lineups, push notifications, opinion polls and video highlights for more than 800 football leagues and cups around the world.


Azure Data Studio (formerly SQL Operations Studio) is a free, light-weight tool, that runs on Windows, macOS, and Linux, for managing SQL Server, Azure SQL Database, and Azure SQL Data Warehouse; wherever they're running.


A/B testing tools for conversion optimization along with the team of the best experts, who are at your service.
