Chai vs QUnit: What are the differences?

Developers describe Chai as "A BDD / TDD assertion library". It is a BDD / TDD assertion library for node and the browser that can be delightfully paired with any javascript testing framework. It has several interfaces that allow the developer to choose the most comfortable. The chain-capable BDD styles provide an expressive language & readable style, while the TDD assert style provides a more classical feel. On the other hand, QUnit is detailed as "A JavaScript Unit Testing framework". QUnit is a powerful, easy-to-use JavaScript unit testing framework. It's used by the jQuery, jQuery UI and jQuery Mobile projects and is capable of testing any generic JavaScript code, including itself!.

Chai and QUnit belong to "Javascript Testing Framework" category of the tech stack.

Chai and QUnit are both open source tools. Chai with 6.39K GitHub stars and 575 forks on GitHub appears to be more popular than QUnit with 3.83K GitHub stars and 763 GitHub forks.

According to the StackShare community, QUnit has a broader approval, being mentioned in 11 company stacks & 6 developers stacks; compared to Chai, which is listed in 6 company stacks and 8 developer stacks.