Description: BuiltWith is a software that analyzes the technologies used on websites. It scans millions of websites to detect what frameworks, content management systems, JavaScript libraries, web servers, and other technologies are implemented on each site.
Type: software
Pricing: Open Source
Description: Codewars is an educational community for computer programming. It offers code challenges known as kata which are ranked by difficulty. Users train on these coding challenges to improve their skills.
Type: software