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Notesnook is a privacy-focused, open-source note-taking application. It encrypts notes on the device using XChaCha20-Poly1305 and Argon2, following a zero-knowledge design intended to keep user content protected.

The repository contains the code needed to build and use web, desktop, and mobile clients, along with a web-clipper extension. Its shared editor and core packages support the cross-platform applications, while React, React Native, and Electron provide the documented client technologies. The repository is licensed under GPL-3.0.

EdgeEver is an open-source, Evernote-style notes workspace built around a three-pane interface for capturing and organizing rich notes. It supports text, Markdown, images, PDFs, Office files, archives, audio, and video attachments, nested notebooks, revision history, public sharing, Mermaid diagrams, imports, and ZIP exports containing portable Markdown and attachments.

The product provides web clipping for Chrome, Edge, and Firefox, unlimited synchronization across web, PWA, Android, and macOS, and offline drafts or native-client editing with queued synchronization. AI features support summarization, rewriting, translation, task extraction, and other note operations through configurable model providers; MCP and REST APIs support agent access and organization.

EdgeEver is licensed under AGPL-3.0 and deploys as a Cloudflare Workers application using D1 and R2, with documented multi-user

AppFlowy is an open-source collaborative workspace that brings projects, wikis, teams, databases, documentation, templates, and AI features together. Its documented workflows include Kanban boards for to-dos, database views for tasks and projects, collaborative workspace use, and creation of documentation sites.

The repository provides downloadable desktop applications for macOS, Windows, and Linux, plus mobile applications for iPhone and Android. It also documents source-based installation and self-hosting, giving users a deployment path under their own control. AppFlowy is distributed under the AGPL-3.0 license and is built with Flutter and Rust.

Memos is an open-source, self-hosted note-taking app designed for quick capture. Its timeline-first web interface supports writing Markdown-native notes, while the Web Clipper saves pages, selected text, and images after review, visibility selection, and Markdown customization.

The product can run as a single Go binary or Docker container and supports SQLite, MySQL, and PostgreSQL. Deployment options include Docker Compose, Kubernetes, native installation, and building from source. Memos exposes REST and gRPC APIs and is licensed under MIT.

SiYuan is an open-source, privacy-first knowledge-management system built around block-level references, two-way links, Markdown WYSIWYG editing, and large documents. Users can create and organize notes, query content with SQL embeds, clip web content, annotate PDFs, and create tables, charts, flowcharts, and other embedded content.

The software includes AI writing and question-and-answer chat through the OpenAI API, templates, flashcards, OCR, export to Markdown, PDF, Word, and HTML, and multi-tab split-screen editing. It is available as desktop and mobile applications and can also be deployed through Docker or Docker Compose, with browser access to a server-hosted workspace.

Logseq is a privacy-first, open-source knowledge-management and collaboration application centered on structured notes and graphs. It supports Markdown and Org-mode files, task management, PDF annotation, plugins, themes, and organization of ideas and notes. The README also documents collaboration, mobile access, and a database version with graph synchronization through RTC.

Users can download desktop releases, try the web version, or build the application from source. A Linux installer is documented, along with a Docker web-app guide for development. The project is released under the AGPL-3.0 license and provides a plugin API for extending the application.

Trilium Notes is a free, open-source, cross-platform hierarchical note-taking application designed for large personal knowledge bases. Users organize rich WYSIWYG notes in arbitrarily deep trees, place notes in multiple locations, edit tables, images, mathematics, and source code, search full text, version notes, and publish notes publicly.

The application also documents note attributes, scripting, REST automation, encryption, synchronization through a self-hosted sync server, relation and link maps, mind maps, geographic maps, Excalidraw-based canvases, web clipping, and Markdown or Evernote import and export. It provides desktop binaries for Windows, macOS, and Linux, a browser-accessible server interface, mobile web access, and Docker-based server installation.

Standard Notes is an end-to-end encrypted note-taking application for digitalists and professionals. It lets users capture notes and files, keep them in a private account, and synchronize them across unlimited devices. The README emphasizes that only the user can read the encrypted content.

The project provides web, Mac, Windows, Linux, iOS, and Android access, with a documented web app and downloadable clients. Its open-source repository also supports self-hosting: users can build the web app and serve the generated static files locally, while configuring a custom sync server. The documentation additionally describes publishing through the Listed service and extension development.

SilverBullet is an open-source, browser-based personal knowledge database built around Markdown pages collected in a Space. Users can edit with live preview, navigate through page links and a page picker, create wiki-style bidirectional links, and use outlining and task features.

The application also includes a built-in database and query language, Objects and Queries, plus a Lua scripting environment for dynamically generating content, custom commands, page templates, and widgets. It runs as a standalone server, with the browser client served by that server, and can be built or deployed in Docker with a mounted content directory.

QOwnNotes is an open-source desktop notepad and todo-list manager for GNU/Linux, macOS, and Windows. It stores notes as plain-text Markdown files, supports multiple folders, hierarchical tags, subfolders, wiki-style links, Markdown preview, attachments, encryption, and substring search with highlighted results. Existing text or Markdown files can be used directly, and Evernote or Joplin imports are supported.

The application syncs notes through Nextcloud or ownCloud file synchronization and can also work with services such as Syncthing or Dropbox. It supports sharing through Nextcloud or ownCloud, browser capture through its Web Companion extension, and management of remote todo lists through Tasks or CalDAV servers. A portable mode, customizable interface, scripts, and optional AI integrations are also documented.

NoteDiscovery is a lightweight, self-hosted note-taking and knowledge-base application for personal wikis, second brains, privacy-conscious users, and small teams. Users write and organize notes stored as plain Markdown files, then find them through full-text search, tags, favorites, backlinks, an outline panel, and an interactive graph view.

The documented interface includes responsive layouts, themes, templates with dynamic placeholders, drawing support, LaTeX/MathJax, Mermaid diagrams, HTML export, printing, and optional password protection. Its built-in MCP server lets compatible AI assistants search, create, edit, organize, tag, and append to notes. It runs through Docker or Docker Compose, or directly with Python, and stores data on the user's server.

Alexandrie is an open-source, self-hosted wiki and knowledge-management platform for teams and individuals. Users create and maintain nested documents with an extended Markdown editor supporting LaTeX, custom containers, checkboxes, snippets, speech-to-text, and embedded diagrams. Documents can be organized across teams, workspaces, categories, and hierarchical nodes.

The platform provides full-text search with highlighted results, offline-first PWA access and synchronization, public links, granular workspace and node permissions, integrated Kanban boards, media previews, and ZIP import/export. It supports OIDC single sign-on, automated backup and restore workflows, and S3-compatible storage. Deployment is documented through Docker Compose, with the application available locally at port 8200.

Atomic is a personal knowledge base built around “atoms,” or Markdown notes that are automatically chunked, embedded, tagged, and linked by semantic similarity. Users can capture content through the desktop app, iOS app, browser extension, RSS feeds, or MCP tools, then search and browse the resulting knowledge graph.

The product includes wiki synthesis with inline citations, scheduled research reports, agentic chat, hierarchical auto-tagging, a spatial canvas, and support for OpenRouter, Ollama, and OpenAI-compatible providers. It runs as a Tauri desktop app, a web frontend with a headless server, or both, and can be deployed locally with Docker Compose, Fly.io, or a standalone server.

Anchor is an offline-first note-taking application for web and Android. Users can create rich-text notes with formatting, checkboxes, images, and audio attachments; organize them with tags, pinning, archiving, backgrounds, and trash recovery; and search locally by title or content. The application also supports note sharing with viewer or editor access, library import and export, and an Android home-screen widget.

Anchor stores edits locally and synchronizes changes across devices when online. It is designed for self-hosted deployment through Docker Compose, using a bundled or external PostgreSQL database, persistent volumes, and optional OIDC authentication. The repository also provides prebuilt container images and downloadable Android APKs.

Crossnote is a local-first web application for reading and writing Markdown notes. Notes remain plain Markdown files stored in the user's browser or local folders, rather than being held behind a dedicated server or account. The documented workflow centers on creating, editing, and viewing notebook content in a browser.

The application supports offline operation and direct synchronization with any Git repository through in-browser Git. Its repository describes a privacy-oriented, self-hostable approach, while the current project is being rebuilt after the original backend was shut down. The supplied documentation does not describe multimedia capture, web clipping, advanced search, templates, tasks, calendar links, or collaborative editing.

Rote is a personal note repository focused on restrained note-taking and recording workflows. It supports Markdown articles that can be referenced by notes, open API access for recording or retrieving data, data export, and optional AI chat over notes and articles with semantic search, related notes, streamed responses, and source references.

The project is available as an independent MIT-licensed product with a graphical web interface, an iOS client, and a documented self-hosted deployment model. Users can run it with Docker Compose or deploy it through Dokploy, configure an administrator account, and optionally enable AI providers, vector storage, and automatic indexing.

Lumina Note is an Electron desktop note-taking application for Windows, macOS, and Linux. Users keep notes as human-editable Markdown files in a local vault, with live preview, reading mode, WikiLinks, backlinks, graph views, images, PDFs, annotations, and flashcards.

Its embedded agent can read, write, reorganize, summarize, connect, and research notes across the vault with permission. It can draft pages, summarize PDFs, generate flashcards, and clean up knowledge. AI providers include local Ollama models, OpenAI-compatible endpoints, multiple hosted providers, and optional Lumina Cloud.

Users can install packaged releases or build the Electron app from source. The repository also documents mobile companion apps, a self-hosted relay, and an extension system, but does not document cross-device note synchronization, web clipping, or real-time collaboration as core workflows.

Plainpad is a self-hosted note-taking application focused on simplicity and data ownership. It provides a server-based environment for creating and maintaining notes, with demo data support for populating a database with sample study notes.

The repository documents deployment through Docker Compose: users clone the repository, enter its directory, and start the application with Docker. It is open source under GPL-3.0, and the supplied README does not document multimedia capture, notebooks or tags, web clipping, advanced search, cross-device synchronization, offline access, collaboration, tasks, or calendar integration.

SilentNotes is an open-source note-taking application for Android and Windows. Users can create notes in a WYSIWYG editor, apply basic formatting, organize and filter notes with tags, recover deleted notes, and find content through full-text search. It also supports to-do lists, password protection, and dark mode.

Notes are end-to-end encrypted and can synchronize through user-selected storage, including FTP, WebDAV, Dropbox, Google Drive, and OneDrive. The repository documents self-hosted storage and cross-device synchronization, while the supplied README does not describe web clipping, multimedia note capture, collaboration, calendar integration, AI search, or transcription.

VNote is a free and open-source Qt-based desktop note-taking application focused on Markdown. It combines an editing experience with notes management rather than functioning solely as a Markdown editor, and is intended to make Markdown note-taking simpler.

The README documents native applications for Linux, Windows, and macOS, with continuous and stable builds available through project releases. The supplied materials do not document multimedia capture, web clipping, cross-device synchronization, offline mobile or web access, advanced search, collaboration, tasks, calendar links, or AI-assisted features.

NoteGen is a local-first Markdown application for capturing thoughts, voice recordings, screenshots, images, links, files, and todos before organizing them into structured notes. Users can filter records by tag, time, or type, select related material, apply a template or instruction, and produce summaries, reports, articles, or other Markdown structures for continued editing.

The editor supports visual and source Markdown modes, tables, task lists, code, math, diagrams, search and replace, attachments, export, printing, history, and workspace management. It also provides AI chat and writing assistance, OCR, audio and image capabilities, searchable knowledge bases with semantic and local retrieval, MCP servers, agent tools, and an editable canvas for diagrams, mind maps, timelines, drawings, and charts.

Notes remain ordinary Markdown files in a chosen workspace. The application is local

Blinko is an open-source, self-hosted personal AI note-taking application focused on quickly capturing fleeting thoughts and ideas. Users can store plain-text notes with full Markdown support, organize their material, and retrieve notes through AI-powered retrieval-augmented generation and natural-language queries.

The project documents multi-platform support through Tauri for macOS, Windows, Android, and Linux, with data kept in the user's self-hosted environment. It provides a Docker-based installation path through an install script and also links to a hosted deployment option through PikaPods. The supplied README does not document web clipping, multimedia note capture, shared editing, tasks, calendar links, or transcription.

TagSpaces is an open-source, offline-first application for organizing, tagging, and managing local files on Windows, Linux, and macOS. It provides file and folder browsing, filename or sidecar tagging, fuzzy search by names or tags, and note creation in TXT, Markdown, or HTML formats. A browser extension can save web pages and screenshots as local files.

The application also includes an HTML-editor-based to-do workflow, media playback for common audio and video formats, and extension modules for additional viewers and editors. It runs without cloud services and includes a locally running web service for search-index creation and image thumbnails. The repository documents Electron desktop builds, a local web version, mobile builds through Capacitor, and Docker setup files.

Notabase is an open-source personal knowledge base designed for networked thinking. Users create and edit notes with a WYSIWYG Markdown-supporting editor, connect notes with links, tags, nested notes, references, and block embeds, then browse relationships through page stacking and graph view. Full-text search, import and export, and linked or unlinked references support retrieval and ongoing organization.

The project provides a hosted experience and documents self-hosting locally with a Next.js build, Supabase authentication, database, and storage. Notes can sync to the cloud and be accessed on any device; the Progressive Web App supports faster loading and offline viewing. The repository is licensed AGPL-3.0.

Memex is an open-source, local-first journaling and personal knowledge-management app for iOS and Android. Users capture text, photos, voice, shared files, and other fragments; the app uses multi-agent workflows to turn records into timeline cards, structured knowledge, tasks, events, media references, and insight cards. It supports automatic tagging, entity extraction, cross-references, conversational card discussions, P.A.R.A. organization, charts, narratives, maps, timelines, and galleries.

Data is stored locally using the filesystem and SQLite, with app lock, device or iCloud Drive storage, backup and restore, and Markdown export. AI features require a configured provider or optional Memex AI service, with support documented for providers including OpenAI, Claude, Gemini, DeepSeek, and Ollama. The product is distributed for iOS and Android and can be built from source with Flutter.

Eclaire is a local-first, open-source AI workspace that unifies notes, documents, photos, bookmarks, and tasks. Users can save web content, create plain-text or Markdown notes, organize assets with tags and flags, search and analyze documents and images, perform OCR, and ask an assistant to summarize or retrieve information across their data.

The product provides a Vite-based web application with mobile and PWA access, Telegram integration, REST APIs, and local model support through systems such as llama.cpp, MLX, LM Studio, and Ollama. It is designed for self-hosting: the documented setup uses Docker Compose, SQLite or PostgreSQL, local storage, and locally run AI models; a command-line onboarding and administration flow is also available.