Qilin is a free, open-source and fully hackable text editor developed for exact sciences in mind. It fully supports KaTeX and AsciiMath. Qilin works on each desktop platform - it is based on Chromium and Node.js, licensed under the MIT license. Qilin is extensible via several plugins and themes. Created documents can be exported as HTML, PDF and Markdown. Note: Qilin Editor and all related repositories are still in development - it might not be suitable for daily, intensive usage. As the only active maintainer, I (@Bartozzz) am not able to provide regular updates, so any help is more than welcome.