
Turtl
Encrypted notes and bookmarks with cross-device sync

Turtl is a privacy-focused note-taking app designed to store personal knowledge (notes, bookmarks, and files) with end-to-end encryption. It provides cross-platform clients and a sync server you can run yourself so data remains encrypted both at rest and in transit.
Key Features
- End-to-end encryption for notes, bookmarks, and attached files (client-side encryption)
- Organize content with boards/spaces and tags for personal knowledge management
- Full-text search across your content (client-side)
- Rich note content including markdown-style formatting support (client UX dependent)
- Cross-device sync using the Turtl Server backend
- Sharing/collaboration features (shared spaces/boards) supported by the platform
- Multi-platform clients (desktop and mobile) designed to work with the same account/server
Use Cases
- Keep a private encrypted personal knowledge base (research notes, journal, snippets)
- Save and tag bookmarks/read-later items with encrypted metadata and content
- Share an encrypted workspace with a small team for sensitive project notes
Limitations and Considerations
- The project’s ecosystem has historically had periods of lower maintenance activity; verify current client/server compatibility and last release before adopting for critical use.
- Some features and UX vary by client platform (desktop vs mobile) depending on current client state.
Turtl fits users who want a note and bookmark manager that prioritizes confidentiality through client-side encryption while still supporting syncing and collaboration. It is best evaluated by matching your preferred client platforms with the currently maintained server and client versions.
Categories:
Tags:
Tech Stack:
Similar Services

AppFlowy
Open-source collaborative workspace and Notion alternative
Open-source, privacy-focused collaborative workspace for notes, databases, kanban boards and AI-assisted writing; desktop, mobile and web clients with local-first storage...

AFFiNE
Open-source, local-first knowledge workspace for docs, whiteboards and databases
All-in-one, privacy-focused workspace that merges docs, whiteboards and databases with real-time collaboration and multimodal AI assistance.

Memos
Privacy-first self-hosted note-taking and knowledge base
Memos is a lightweight, privacy-first self-hosted note-taking service with Markdown, fast search, and sharing features for personal notes, wikis, and team knowledge.


Joplin
Offline-first note-taking app with end-to-end encrypted sync
Joplin is an offline-first, privacy-focused note and to-do app with end-to-end encryption, Markdown support, web clipping, and sync across desktop and mobile.

SiYuan
Privacy-first block-based personal knowledge management app
Open-source, block-oriented personal knowledge manager with Markdown WYSIWYG, block-level two-way links, encrypted sync, Docker deployment and AI integrations.


Logseq
Privacy-first knowledge management and collaboration platform
Logseq is a privacy-first, open-source knowledge management app for networked notes, tasks, and collaboration using local Markdown or Org-mode graphs.
JavaScript
Docker
React
Node.js