Supernotes is described as 'New way to create notes and collaborate with your friends. Quickly create note-cards with diverse content from task lists to maths equations, with full markdown and LaTeX support. You can tag your cards, find relevant keywords, and sort your cards in an instant' and is a Note-taking tool in the office & productivity category. There are more than 50 alternatives to Supernotes for a variety of platforms, including Mac, Web-based, Windows, Linux and iPhone apps. The best Supernotes alternative is Obsidian, which is free. Other great apps like Supernotes are Logseq, Anytype, Notion and Zettlr.