Supstack: a free, open-source plain-markdown notes app
After years of hopping between note apps, a user spent a month with Claude designing and writing Supstack for Windows, macOS and Android.
Credits
- Reddit poster Rasalinius Source ↗
Earliest dated source:
The full story
Supstack is a free, open-source notes app for Windows, macOS and Android, made by someone who spent years hopping between note systems and kept tweaking Obsidian plugins instead of working. They spent about a month with Claude researching how other apps work, designing the features and writing the code.
Notes are plain Markdown, synced with Git. Cards nest, and one card can have several parents, shown as a board, list or notes. Tasks have six states, priorities and scheduled or deadline dates, collected in an agenda modelled on Emacs org-mode.
How it was done
Tools
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Sources
From a short post by the maker, so the details are as they tell them.
- Reddit: I spent years hopping between note apps, so I built my own: Supstack (free, open source)Reddit poster: RasaliniusPosted
The maker's post in r/selfhosted.