LeetCode++ is a free Chrome extension developed by Gary Tou. It falls under the category of Browsers and is specifically listed as an Add-ons & Tools.

The main purpose of LeetCode++ is to disable the save shortcut (`⌘ + s`/`Ctrl + s`) on LeetCode, a popular platform for coding interview preparation. This feature is particularly useful for those who find themselves accidentally saving their work while in the middle of solving coding problems.

In addition to disabling the save shortcut, LeetCode++ also addresses a few other annoyances on the LeetCode platform. While the specific annoyances are not mentioned in the provided information, it can be assumed that the extension aims to enhance the user experience by removing distractions or improving certain functionalities.

Overall, LeetCode++ is a handy Chrome extension for programmers who frequently use LeetCode and want to eliminate the frustration of accidentally saving their work.