list.it is described as 'Simple, free, open-source (MIT-license) note-keeping tool to help you manage the tons of little information bits you need to keep track of each day. Installs as i Firefox add-on' and is a Note-taking tool in the office & productivity category. There are more than 100 alternatives to list.it, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux, iPhone and Android apps. The best list.it alternative is Notesnook, which is both free and Open Source. Other great sites and apps similar to list.it are CherryTree, Trilium Notes, Cryptee and QOwnNotes.