Joplin is a straightforward, Electron-based application that allows you to add and manage notes and to-do lists.īefore hastily labeling Joplin as 'just another humdrum note-taking app,' here a few interesting facts: this is an open source, cross-platform app that comes with clients for all the major platforms such as Windows, macOS, and Linux, as well as for Android (with an iOS app currently in the works).