SideNotes

SideNotes, made by Apptorium and actively developed for more than 7 years with 40-plus updates since 2019, is a macOS note-taking app that lets users capture notes, tasks, links, and snippets from a side panel at the edge of the screen without leaving the app they're currently in. It offers iCloud synchronization across devices, markdown formatting with invisible markup, customizable themes, and note pinning and folding. SideNotes includes task and checklist support, file and folder shortcuts, integration with Apple Shortcuts, AppleScript, and third-party tools like Alfred, Raycast, and PopClip, plus automatic backups and light/dark mode support. It holds a 4.5-out-of-5 rating from 170 App Store reviews. Pricing is a one-time purchase of $19.99 per major version, with no subscription required; it is also available on the Mac App Store and through the Setapp subscription service, with a paid Version 2 upgrade planned.