Anchor is a self-hosted note-taking app that keeps every note on your own server and on your devices, so your ideas stay searchable and editable even with no connection at all. Open the web app or the phone app and start typing; the rich text editor handles headings, checklists, highlights, and formatting from a slash menu, and everything saves locally first. When a connection comes back, changes sync automatically across your devices, so the thought you captured on a train is waiting on your desk. Organize with colored tags, pin the notes you live in, archive the ones you are done with, and set one-time or repeating reminders so a note resurfaces when it matters. Notes can carry image and audio attachments, custom backgrounds, and a full version history you can roll back. Share a note with another user as view-only or editable, search titles and body text across everything including the archive, and recover deleted notes from the trash during the recovery window. Bring an existing library with you through Markdown import, a full Anchor backup, or a Google Keep export, and take everything out again the same way. An admin panel controls registration and shows system statistics, and OpenID Connect sign-in through providers like Authelia or Keycloak can replace local passwords entirely. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

xEdit is a free, open-source Markdown editor that keeps your notes as plain text, on your device or on your own server, and hands AI clients a proper door instead of a scrape. Write in live preview, where headings, code and images render in place and only the line under your cursor shows its source, or flip to a split view when you want both sides visible. Slash commands insert headings, callouts, tables, to-dos, code blocks and media, and wiki links tie notes together by title, with renames updating every link that points at the note. Any checkbox in any note with a date rolls up into a Today view, and nested folders, global search and a recoverable trash keep a growing library tidy. Choose where notes live: browser storage, a local folder of Markdown files, or cloud sync with an offline mirror on every device. Cloud notes gain version history with line-by-line diffs and one-click rollback, share links that collect comments on selected passages, and exports to Markdown, HTML, PDF, PNG and Word. Pick one of thirteen layout themes and copy straight into WeChat or Zhihu with styles inlined and math intact, then connect Claude or Cursor through the built-in MCP server to search, organize and edit the whole library. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Nowen Note is a self-hosted knowledge base where your notes, tasks, daily journals, and mind maps live in one private workspace you control. One tree holds folders, rich-text documents, and Markdown notes side by side, with drag-and-drop ordering, unlimited nesting, colored tags, pinning, and full-text search across everything. Each note can switch between a rich-text editor and Markdown with live preview, split view, outlines, tables, code blocks, math formulas, diagrams, comments, and version history. Connect the AI provider you prefer, such as an OpenAI-compatible API, Gemini, DeepSeek, or local Ollama, to continue drafts, rewrite passages, translate, summarize, and ask questions answered from your own notes. Tasks get list, board, calendar, and timeline views with dependencies, recurring rules, reminders, and templates, while daily journals capture short entries, moods, and photos and roll them into AI weekly and monthly reviews. Teammates edit together in real time, and folder-level permissions, passwords, allow and deny rules, share links with expiry dates, and guest comments decide exactly who sees what. Imports arrive from Obsidian, SiYuan, Word documents, web pages, and plain Markdown, attachments can live on local disk or S3-compatible storage, and scheduled backups travel to email or WebDAV. Keep working offline with a cached workspace that syncs when you reconnect, clip pages from the browser extension, and connect other tools through the OpenAPI, SDK, webhooks, and MCP server. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.

Poznote serves as an all-in-one personal knowledge base and digital workspace designed to bridge unstructured thinking and structured documentation. The platform pairs a responsive Markdown editor with live side-by-side rendering, KaTeX mathematical notation, and interactive Mermaid diagram compilation. Creative thinkers can switch instantly to an embedded Excalidraw infinite canvas to sketch system architectures, design mind maps, and create interface wireframes alongside their written notes. Every directory within the workspace can be toggled into an agile Kanban board where nested folders become customizable workflow columns and notes transform into draggable task cards. Task management views aggregate checklists across documents into unified priority queues with due date reminders and completion filters. An integrated bi-directional Git synchronization engine connects user workspaces directly to personal GitHub or Forgejo repositories, versioning edits automatically on save. The software also provides an integrated Model Context Protocol server that enables AI coding assistants to search notes, create documents, and query knowledge repositories securely. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

For people whose notes number in the tens of thousands, Trilium Notes is the hierarchical note-taking application built specifically for large personal knowledge bases - actively maintained as TriliumNext. Notes arrange into arbitrarily deep trees where every note is both content and container, and cloning lets a single note live in multiple places at once - bash notes belong under both Linux and Scripting, and Trilium refuses to make you choose. A WYSIWYG editor handles rich text, tables, math, and syntax-highlighted code blocks with Markdown-style shortcuts, while dedicated note types cover Excalidraw sketches, mind maps, geo maps with GPX tracks, relation maps that visualize connections between notes, and tables with typed columns. The attribute system is the power layer: labels attach queryable metadata (#year=1999, #author), relations create named links between notes, and both inherit down the tree - feeding full-text search, saved queries, and scripting. Scripting is Trilium's deepest differentiator: JavaScript code notes run on events like note changes or hourly schedules, build custom widgets, and add server-side logic, turning the knowledge base into a programmable platform. Protected notes encrypt sensitive content, note hoisting focuses on subtrees, and the self-hosted server syncs desktop clients across devices.

Notes on Windows, macOS, Linux, Android, iOS, and the terminal, synced through your own server: Joplin pairs its open-source clients with Joplin Server, the official self-hosted backend that replaces Dropbox, OneDrive, or Nextcloud as the synchronization target. Notes are Markdown with inline attachments (images, PDFs, audio), organized into hierarchical notebooks and sub-notebooks with cross-cutting tags, alongside to-do lists with reminders and alarms. End-to-end encryption is the headline feature: enabled in the clients, it encrypts sync payloads on-device before upload, so the server stores blobs it cannot read - genuine protection even if the host is compromised. The desktop app offers both Rich Text and Markdown editors, extended by a plugin ecosystem, custom themes, and an Extension API for writing your own scripts; a Web Clipper for Chrome and Firefox captures full pages or screenshots straight into notebooks. Joplin Server ships as a Docker image with SQLite for evaluation and PostgreSQL for production, offers a filesystem storage driver for large content, and includes multi-user support and note sharing - all free under AGPL-3.0 when self-hosted. Notes stay in an open format, so the exit path always exists.

Capture a thought before it evaporates: Crumbs is a self-hosted, privacy-first alternative to Google Keep for notes you would rather keep on your own server. You write rich notes with Markdown, checklists, and image attachments, then give each one a personality from twelve color themes. Hashtags organize everything without folders, pinning keeps the important notes on top, and archive and trash clear the rest out of sight. Full-text search reaches across titles, content, and tags, so last month's idea is one query away. Every note keeps a version history you can browse and restore, which turns accidental deletions and bad edits into non-events. Notes can be shared with other users on your instance, with optional email notifications over SMTP for share alerts and account events. The installable PWA works offline through IndexedDB with last-write-wins CRDT sync, so a note captured on a plane reconciles when you land. Accounts are protected with Argon2 password hashing, and Google, GitHub, or any OIDC provider can handle sign-in instead. A built-in MCP server even lets AI assistants manage your notes on your behalf. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.