End-to-end encrypted notes, tasks, files, passwords, journal and bookmarks. Keyed by a 12-word BIP-39 phrase: no email, no password, no account to leak. The full client source for web, desktop and mobile is published, along with the encryption (XChaCha20-Poly1305, HKDF-SHA256, Ed25519) and the threat model, so the privacy claims are falsifiable.
Notes App GitHub Repositories (2026) · Open Source Tools
Discover the best Notes App open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.
Build your personal knowledge base with Trilium Notes
Fast Markdown note-taking app for Mac and iPhone
⛷ A light, native Markdown notebook for Mac, iPhone and iPad.
📝 Minimalist offline note-taking app with automatic Wi-Fi synchronisation via WebDAV without many permissions 🛡️
📝 Glyph is a private desktop workspace for notes, documents, and ideas, with Markdown editing and built-in AI tools.
Agentic Voice Notes for iPhone and macOS - Rust, Dioxus, LanceDB + RIG + SQLite
Local-first outliner. Markdown is the source of truth. Sync that doesn't corrupt your tree when two devices edit offline
A fully open source & end-to-end encrypted note taking alternative to Evernote.
Sketch and take handwritten notes.
A plain text note-taking assistant
A high-performance, local-first Markdown editor and general-purpose text editor for Windows, macOS, and Linux, with WYSIWYG and Markdown source editing.
Glass Keep is Keep Notes alternative using Glass design. Docker Server, Tauri Clients and PWA
Feature-packed TUI note management app inspired by Obsidian
Google Keep-style notes for iOS, Android, and self-hosting. Offline-first, with optional sync.
Star if Papyra keeps your notes yours! A self-hosted, Google Keep-style notes app where every note is a plain Markdown file on your disk. Live collaboration, passkeys, encrypted locked notes, full-text search and one-container Docker setup. Crafted with 💗 for people who want their notes without lock-in.
Notes for iPhone and Mac that ChatGPT, Claude, Claude Code and Codex can read and edit. Feels like Apple Notes, imports it too. Open source, encrypted.