Joplin is a free and open-source desktop and mobile note-taking and to-do list application written for Unix-like (including macOS and Linux) and Microsoft Windows operating systems, as well as iOS, Android, and Linux/Windows terminals,[2] written in JavaScript.

[3] Laurent Cozic started work on Joplin in 2016,[4] and the first Android version was released on 28 July 2017.

The first public desktop application release was version 0.10.19, on 20 November 2017.

[5][6][7] A Web Clipper[8] for Chrome was introduced in December 2017 and the Firefox extension was released in May 2018.

Joplin's workflow and featureset is most often compared to Evernote.