Flat Notes has been discontinued. Similar apps include CherryTree, which is free and open source. Other options are Trilium Notes, Cryptee, Notally and NotallyX. You're spoiled for choice with Note-taking Tools like Flat Notes: we list more than 25 alternatives for Windows, Android, Mac, iPhone and iPad.
Hierarchical note-taking software that is free, open-source, cross-platform. Features include rich text, syntax highlighting, multi-level lists, embedded files, customizable interface, code execution, PDF export, spell check, images & tables, and comprehensive project management support.
The original trilium is transfered to this repo by its owner and the app continues to develop here as stated here: https://github.com/TriliumNext/Trilium
Encrypted, privacy-focused digital storage with zero-knowledge architecture supporting document editing, notes, journals, and photo storage with raw DSLR support, live sync, markdown, code, LaTeX, to-dos, audio, tables, EPUB, PDF, and cross-platform access.
Estonia
EU
A minimalistic notes app. Notally it's extremely light, minimalistic and elegant. There are minimal dependencies and lines of code. (All without compromising on readability).
India
Passfindr is a web based premium Personal knowledge base, Password manager and Bookmark manager application to securely store passwords and other sensitive information in a virtual vault locked with individual master passwords.
United States
A beautifully designed, native plaintext note-taking app for macOS 13+. No rich text errors, no distractions—just fast, lightweight notes that stay private.
United States
Privacy oriented, without vendor lock in note organizer, todo list desktop application. Work offline with text, markdown and pdf files.
India
Noto is an opensource minimal Note-Taking app that meets customer expectations with privacy in mind.
Saudi Arabia
Noteful is your one-stop note-taking app to experience the new paperless revolution on iPad.
United Kingdom
A new medium for your ideas—augment your thinking with a text editor designed for structuring lists. Side-by-side views allow 3 modes of thinking.
United States
