Show HN: Notekpr – An open-source, E2EE alternative to Notion and Obsidian

Notekpr is an open-source note-taking and collaboration platform positioned between Notion and Obsidian. It stores notes as plain Markdown files and combines a live-preview editor with drawings, wiki links, backlinks, tags, full-text search, version history, comments, and real-time shared editing. It works offline, merges changes after reconnecting, and supports importing from Obsidian, Notion, and other Markdown collections. A command-line client syncs vaults to a local folder, allowing users to edit them in tools such as Obsidian, Neovim, or VS Code; drawings are compatible with Excalidraw. The product also supports scoped identities for AI assistants and OpenID Connect sign-in.

Its central argument is that collaboration need not require giving a service access to private notes. Encryption happens on users’ devices, and the server stores ciphertext; the claimed protection covers note contents, titles, filenames, attachments, vault names, and viewing activity. Account keys remain on devices, while signed membership and edits are intended to prevent a server from adding users or forging changes. The service acknowledges that servers can still observe data such as file sizes, timing, and sharing relationships. The software is available for self-hosting as a Rust binary with SQLite under the AGPL. Hosted plans are not yet open; proposed free and paid plans differ mainly in storage and vault limits, while offering the same features.