Competitive Companion is a Chrome extension developed by Jasper van Merle. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This free tool is designed to parse competitive programming problems and contests and send the parsed data to various tools like CHelper and Hightail.

With support for 81 online judges, including popular ones like Codeforces and UVa Online Judge, Competitive Companion offers a comprehensive solution for competitive programmers. Its simplicity is one of its key features. After installing the extension and ensuring that one of the supported tools is open, all you need to do is navigate to a problem page and click on the green plus icon located in the top-left corner of your browser. This action will send the parsed data to the open tool.

Competitive Companion also offers the convenience of parsing entire contests at once. On websites where it is able to parse contests, simply navigate to the page with all the problems and click on the green plus icon. This will download and parse all the problems in the contest, saving you valuable time.

For those who prefer keyboard shortcuts, Competitive Companion provides the option to use the Ctrl+Shift+U shortcut instead of the green plus icon. This shortcut is configurable on the chrome://extensions/shortcuts page.

Overall, Competitive Companion is a versatile and user-friendly tool that streamlines the process of solving competitive programming problems. Its wide range of supported online judges and the ability to parse entire contests make it a valuable addition to any competitive programmer's toolkit.