Open-source alternatives to Notes

fsnotes is a markdown notes manager and cross-platform markdown editor for macOS and iOS. It functions as a personal knowledge base that organizes plain text and markdown files across folders using tags and bidirectional links. The system provides a secure environment through an encrypted plain text notebook that protects individual notes and folders. It implements Git-based note versioning to track document changes and maintain backups, while relying on external cloud storage services to synchronize files across devices. The application renders mathematical formulas, diagrams, and syntax-hi

This project is a native C++ desktop application for personal knowledge management. It functions as a local-first markdown note-taking tool and knowledge base, ensuring data is stored directly on the local device for offline access and user ownership. The application distinguishes itself by transforming markdown task lists into interactive kanban boards for visual workflow tracking. It also emphasizes keyboard-driven productivity, utilizing system-wide hotkeys to summon the application to the foreground and navigate its interface without a mouse. The software provides hierarchical content or

Boostnote is a local-first note management system and markdown text editor designed for personal knowledge management. It functions as a desktop application that reads and writes markdown files directly to the local disk, allowing for the creation of a searchable personal knowledge base and digital garden. The application provides a writing interface that renders markdown syntax in real time. It is used to organize fragmented information, maintain project documentation, and author structured technical guides.

Foam is a personal knowledge management system that organizes information into a navigable web of interconnected markdown files. It functions as a knowledge graph tool, utilizing wiki-style bidirectional linking and metadata to track relationships between documents and concepts. By storing data in standard text files, the system ensures long-term portability and compatibility with external tools. The platform distinguishes itself through its integrated visualization and automation capabilities. It generates graphical maps of file connections to help users identify patterns and discover relati

jrnl is a command-line journaling tool used for recording dated entries and managing personal journals directly from a terminal. It functions as an encrypted plain-text journal system that protects private entries through encryption and integration with native system keychains. The project includes a calendar-based activity tracker that visualizes entry frequency and patterns using a heatmap layout. It also serves as a data utility for exporting journal entries into formats such as Markdown, JSON, YAML, and XML. The system supports multi-journal management for different life areas and provid

QOwnNotes is a desktop note editor that stores each note as a plain-text Markdown file on the local filesystem, avoiding proprietary formats and enabling direct file access. It functions as a Nextcloud Notes client, syncing notes and metadata with Nextcloud or ownCloud servers through a companion API service for versioning and sharing. The application also integrates with AI providers and exposes a local MCP server for external agents to search and fetch notes, and includes a companion browser extension for capturing web content, bookmarks, and screenshots. The editor distinguishes itself thr

ArchiveBox is a self-hosted web archiving system designed to capture and preserve permanent static copies of webpages, media, and PDFs on personal infrastructure. It functions as a digital content curator and personal web archive manager, allowing users to import URLs from bookmarks, RSS feeds, and browser history to create a centralized, searchable knowledge base. The project is distinguished by its ability to archive private, paywalled, or login-protected content using browser cookies and authenticated session persistence. It ensures long-term availability by saving pages in multiple concur

Dendron is a markdown knowledge management system designed for organizing linked files into a hierarchical personal knowledge base. It functions as a git-backed note manager that stores data as plaintext markdown files to ensure data persistence and ownership. The system distinguishes itself through schema-based organization, which applies structural templates and autocomplete hints to maintain consistency across large sets of documents. It also provides bi-directional linking and an interactive graph view to visualize relationships between notes, alongside a static site generator that export

This project is a containerized search infrastructure designed to deploy a privacy-focused metasearch engine. It acts as a self-hosted search proxy that aggregates results from multiple external web, image, and academic search providers while anonymizing requests and stripping trackers to protect user identity. The system utilizes Docker to orchestrate the search instance, integrating caching mechanisms and reverse proxy support to ensure a private and efficient search environment. It employs a modular adapter-based integration to standardize diverse external API responses and a processing pi

TiddlyWiki5 is a modular wiki engine and non-linear knowledge base that organizes information into small, linked chunks. It can function as a single-file personal wiki where all content and application logic are stored within one HTML file for local-first use, or as a self-hosted wiki server that serves content over HTTP. The project is distinguished by a data-driven architecture where plugins and extensions are treated as stored data entries. It features a filter-based query engine for manipulating structured data and a transclusion system that allows the live content of one entry to be embe

Vimwiki is a personal wiki plugin and text editor extension for Vim that organizes interconnected text files. It functions as a Markdown knowledge base and a Zettelkasten note system, allowing for the creation of a networked system of notes and documentation. The project provides tools for wiki administration, enabling users to create, rename, and navigate between linked documents via internal linking. It supports various markup formats, including Markdown and MediaWiki, and can transform this content into HTML for web publishing. The system covers personal knowledge management through globa

Blinko is a personal knowledge management system and an LLM-powered knowledge base that enables users to capture and organize thoughts through a bi-directional knowledge graph. It functions as a RAG-enabled note-taking application and a self-hosted Markdown editor, allowing for the creation of permanent documentation and fleeting notes. The project distinguishes itself by integrating retrieval-augmented generation to provide conversational querying and AI-powered analysis of private document libraries. It supports both cloud-based and local AI model integration, enabling users to perform sema

Org-roam is an Emacs-based note-taking system that builds a bidirectional network of plain-text notes, functioning as a personal knowledge base manager. It maintains both forward and backlink references in a SQLite database, automatically updated on file save, and uses persistent unique identifiers for notes instead of file paths to enable stable links across renames and moves. The system integrates directly with Emacs through custom interactive commands and hooks that access the database and buffer state, and it generates static graphs of note interconnections using Graphviz to reveal relati

This project is a markdown-based personal knowledge base and digital learning journal used to store notes and summaries from books and technical literature. It serves as a reading summary repository and technical reference library for archiving key takeaways and insights from non-fiction and professional materials. The collection functions as a digital garden for curating insights from books, articles, and videos. It specifically focuses on distilling complex architectural patterns, technical concepts, and professional leadership principles into a searchable format for long-term reference. T

This project is a community-curated directory of open-source software designed for deployment in private server environments and home labs. It serves as a comprehensive resource for discovering independent, self-hosted alternatives to mainstream cloud services, enabling users to maintain full data ownership and control over their digital infrastructure. The directory is structured through a hierarchical taxonomy that organizes a vast collection of applications into logical categories, ranging from media management and data analytics to private communication and team productivity tools. It dis

Karakeep is a self-hosted, open-source platform designed for personal knowledge management and web content archiving. It functions as a centralized repository where users can capture, organize, and preserve bookmarks, notes, and media files, ensuring long-term access to digital information even if original sources are removed or modified. The system distinguishes itself through its automated content processing and security-focused architecture. It utilizes headless browser crawling and optical character recognition to ingest and index web content, while a modular artificial intelligence pipel

Zettlr is an academic markdown editor and research note management tool designed for professional writing and knowledge organization. It functions as a document processor that enables users to draft, structure, and manage research projects within a unified workspace. The application distinguishes itself by integrating a Zettelkasten-based knowledge management system, allowing users to link related research concepts and notes to foster discovery. It utilizes a local-file-system persistence model, ensuring that all data remains under user control and portable across different environments. The

Taskbook is a command-line task manager and local plain-text organizer that provides a terminal user interface for managing to-do lists, project boards, and notes. It functions as a CLI Kanban board, allowing users to group actionable items and informational snippets into categorized boards. The tool emphasizes local data organization by storing information in local files with customizable storage paths. It supports a Kanban-style workflow where tasks are organized into boards and tracked through pending, in-progress, and complete states. The system includes capabilities for prioritizing tas

Notes is an Android application designed for personal knowledge management and task organization. It functions as an offline-first utility that prioritizes local data persistence, allowing users to capture and store text-based information without requiring an active network connection. The application organizes content into a card-based interface that supports custom themes for visual arrangement. To ensure data availability and portability, it includes features for manual file-system export and local archiving, enabling users to maintain backups independent of external services. Beyond its

Notable is a local-first markdown note taking application and document manager. It functions as a personal knowledge base that persists notes as plain text files on the local disk to ensure data portability and user ownership. The application provides a markdown editor featuring a split-pane live preview for real-time rendering of content, including mathematical expressions and diagrams. Information is organized through a hierarchical tagging system that allows for nested labels and multi-dimensional categorization. The software includes tools for bulk note management to apply operations acr

Lucida is a multimodal AI assistant framework and containerized microservice orchestrator. It provides a platform for building agents that process and integrate speech, vision, and text inputs to perform intelligent tasks, supported by a retrieval-augmented generation system for storing and querying factual data from texts, URLs, and images. The framework features a state-graph workflow engine to route user requests through a sequence of microservices using a predefined state machine. It also includes an extensible plugin interface that allows for the integration of custom functional modules

This project is a technical reference knowledge base and developer cheat sheet repository. It functions as a searchable collection of quick-reference guides, CLI command patterns, and code snippets for various operating systems, cloud platforms, and infrastructure tools. The system operates as a markdown-based technical knowledge base, where content is stored in plain text files and rendered as a static site. This approach enables a personal knowledge management system that utilizes version control and a directory-based navigation hierarchy to organize technical notes for long-term retrieval.

This project is a public transparency log of copyright takedown and counter-notices. It functions as a redacted copyright registry, maintaining a chronological record of legal enforcement requests received by a hosting platform. The archive utilizes a flat-file data model, storing notices as plain-text files within a directory hierarchy. A distributed version control system provides a permanent audit trail and version history for all archived legal notices. The system focuses on digital rights monitoring and copyright enforcement transparency by removing personally identifiable information f

Omni-Notes is a mobile note-taking application and personal knowledge management tool used for creating and organizing text notes, checklists, and sketches. It functions as a multimedia knowledge base that integrates voice input, images, and audio files to maintain a searchable digital archive. The application utilizes a tag-based filtering system to group and search for stored information using metadata and categories. It further extends productivity by providing home and lock screen widgets that expose note snapshots and shortcuts for rapid access. The system supports the creation of struc

Taskbook is a command-line task manager and note-taking application that operates within a terminal interface. It functions as a CLI Kanban board, allowing users to organize work into boards with status tracking and priority levels, while persisting all data as structured JSON documents in a configurable local directory. The tool enables personal knowledge management by grouping tasks and plain text notes into named boards and sections to categorize different projects. It supports task prioritization, status tracking, and the ability to mark items as favorites for quick retrieval. The applic

This project is a curated repository of technical learning materials and a personal knowledge base. It consists of version-controlled Markdown summaries covering software architecture, engineering literature, research papers, and professional talks. The collection functions as a digital garden, using bidirectional linking and cross-references to map relationships between technical concepts. Content is distilled from various sources, including technical books, conference talks, and foundational computer science papers, into concise summaries to facilitate recall and study. The system is organ

This project is a markdown kanban board and visual task organizer. It serves as a productivity extension for personal knowledge management, providing a board-based system to manage task status and progress through a drag-and-drop interface. The tool implements a kanban workflow by converting plain markdown files into draggable columns. This allows for the visualization of work stages and the organization of project tasks within a local knowledge base. The system covers project management and visual task tracking by structuring unstructured notes and lists into interactive boards. It uses mar