Jest is described as 'Front-end unit testing framework' and is an app in the Development category. There are eight alternatives to Jest for Linux, Mac, Windows, Self-Hosted solutions and Online / Web-based. The best alternative is Cypress.io, which is both free and Open Source. Other great apps like Jest are Mocha (Free, Open Source), Jasmine (Free, Open Source), Karma (Free, Open Source) and AVA (Free, Open Source).
Testing can be a drag. AVA helps you get it done. AVA is a test runner for Node.js with a concise API, detailed error output, embrace of new language features and process isolation that let you write tests more effectively. So you can ship more awesome code. 🚀
The React Testing Library is a very lightweight solution for testing React components. It provides light utility functions on top of react-dom and react-dom/test-utils, in a way that encourages better testing practices.