Open-source alternatives to Codimd

N-blog is a full-stack JavaScript blogging platform and content management system built with Node.js. It functions as a server-side rendered web application that renders markdown source text into HTML for publishing and displaying articles. The system includes a markdown blogging engine that enables the creation and management of posts and user comments. It features a integrated user authentication system that handles account registration, secure sign-in, and session management to protect private routes. The project covers broad capability areas including request routing and middleware pipel

Liveblocks is a realtime collaboration infrastructure platform that synchronizes application state, documents, and user presence across multiple participants using conflict-free replicated data types. It provides a managed backend for collaborative text editors, threaded commenting and annotation systems, in-app notifications, and AI copilot deployment, all built on a WebSocket transport layer with server-side room management APIs. The platform distinguishes itself through a headless component primitive system that exposes unstyled React hooks and composable building blocks, allowing develope

This project is a self-hosted note-taking platform and collaborative markdown wiki. It functions as a real-time markdown collaborative editor, allowing multiple users to create, organize, and share documents simultaneously. The platform is designed for self-hosted knowledge management and collaborative markdown documentation, providing a private environment for teams to maintain shared technical notes.

CKEditor 5 is a modular rich text editor framework and JavaScript UI component used to build customizable visual editors. It serves as a system for generating HTML or Markdown content, providing both full rich-text editor components and restricted inline editor components for web applications. The framework includes a collaborative editing engine for real-time simultaneous editing, change tracking, and threaded commenting. It features an AI text assistant for polishing, rewriting, and generating content, as well as a document export engine that transforms rich text into PDF and Word files. T

PartyKit is a serverless WebSocket backend platform for building real-time multiplayer applications. It provides a globally distributed edge computing runtime that runs stateful server code close to users, with automatic scaling and hibernation for idle rooms. The platform handles WebSocket connections, HTTP requests, and durable storage without requiring infrastructure management, and includes a client and server SDK with hooks, storage, and Yjs integration for building collaborative features. The platform distinguishes itself through per-room isolation using Durable Objects, where each uniq

Briefer is an interactive data notebook platform and business intelligence dashboard tool used for collaborative data analysis and reporting. It provides a containerized environment for building reports that combine SQL, Python, and Markdown with native visualizations. The platform features an integrated code assistant that uses large language models to generate SQL and Python snippets from natural language prompts. It is designed as a Kubernetes data application, deploying via Helm charts to manage isolated compute environments and ensure separate resources per page through pod-based isolati

DesktopEditors is an office suite application designed for creating and editing text documents, spreadsheets, and presentations across different operating systems. It serves as an OOXML compatible editor, ensuring that files are read and written according to Office Open XML standards for cross-platform document exchange. The suite functions as a collaborative document platform featuring real-time co-authoring, version tracking, and integrated communication tools. It also acts as an AI-powered document assistant and PDF editor, providing capabilities for content generation, automated spreadshe

This project is a self-hosted documentation platform designed for collaborative knowledge base management. It provides a block-based editor that structures content as a tree of independent nodes, allowing for flexible layout composition and the creation of complex, nested document hierarchies. The platform distinguishes itself through an offline-first architecture that utilizes conflict-free replicated data types to maintain synchronization across multiple clients. This ensures that teams can continue editing content during network disconnections, with all changes merging automatically once c

Kimai is an open-source time tracking system that records employee working hours, manages absences, and generates professional invoices from recorded timesheets and expenses. It organizes all time records through a mandatory three-level hierarchy of customer, project, and activity, and supports project budget monitoring with configurable time and money limits. The application is extensible through a plugin system that allows adding custom features, invoice templates, reporting views, and dashboard widgets without modifying core files. It provides a RESTful JSON API for programmatic read and w

Next-auth is an authentication and identity management library for web frameworks. It provides a unified system for handling user sign-in and session state across server and client environments, functioning as a session management framework and an OIDC authentication library. The project distinguishes itself through a provider-based identity abstraction that supports multiple authentication methods, including OAuth, email magic links, traditional credentials, and passwordless passkeys. It allows for the registration of custom OAuth or OIDC compliant providers and offers tools to define branda

Rustpad is a self-hosted collaborative text editor and code environment. It functions as a containerized web application that uses an operational transformation engine to synchronize text changes across multiple browser clients in real time. The system is designed for database-free document synchronization, allowing users to host private environments for sharing code snippets without external database dependencies. It supports ephemeral document hosting, where shared spaces are automatically removed from memory after a period of inactivity. The application manages data through an in-memory d

Mindoc is a self-hosted documentation portal and API documentation management system built as a Golang web application. It serves as a markdown documentation engine for authoring, organizing, and sharing technical interface documentation and database dictionaries. The system persists project data and user accounts using MySQL or SQLite databases. The platform distinguishes itself by integrating diagrams-as-code rendering via Mermaid syntax, allowing flowcharts, sequence diagrams, and Gantt charts to be generated directly from text. It supports a flexible content pipeline that combines markdow

reveal-md is a markdown-to-HTML converter and static site generator that transforms plain text documents into interactive slide decks using the reveal.js framework. It functions as a presentation generator that parses markdown files into structured web pages. The project provides a containerized workflow featuring a local preview server and live reloading to reflect content changes instantly in the browser. It includes a headless browser tool to export web-based presentations into printable PDF documents and the ability to export decks as standalone HTML folders for static hosting. The syste

Authlogic is a Ruby authentication framework designed to manage user identities, session persistence, and secure password hashing. It provides a system for verifying user credentials against stored records using configurable identity fields. The framework distinguishes itself through its provider-based identity integration, allowing applications to connect authentication flows to external services including OAuth, OpenID Connect, LDAP, and various social media platforms. It also includes an extensibility model that executes custom user-defined code via hooks and callbacks during identity veri

Cleaver is a developer-focused presentation creator and static HTML presentation framework. It functions as a markdown slideshow generator that converts structured plain text into formatted HTML outputs for browser display. The tool enables rapid slide deck iteration through a live-reloading workflow that monitors source files for changes. It supports custom presentation styling by injecting external CSS, applying visual themes, and allowing per-slide formatting overrides. The system includes capabilities for automated slide compilation, including the generation of author credits and metadat

Athens is no longer maintainted. Athens was an open-source, collaborative knowledge graph, backed by YC W21

CodeMirror 5 is a browser-based code editor and extensible UI component. It functions as a syntax highlighting engine and a programmable text surface, providing a professional coding experience embedded within web pages. The project is distinguished by its ability to act as a collaborative text editor, synchronizing document changes across multiple users in real time. It also includes a dedicated Vim emulation layer that implements modal keyboard interactions, motions, and operators. The system covers broad capability areas including language support for autocompletion and error analysis, co

PasswordPusher is a self-hosted secret sharing service and file sharing platform used to create encrypted, self-destructing links for sensitive text and files. It functions as a white-label security gateway, allowing organizations to manage the distribution of secrets on their own internal infrastructure. The system supports corporate white-labeling through custom domain mapping and branding customization to align the interface with a professional identity. It provides a RESTful API and command-line interface for the automated distribution of secrets within external scripts and workflows. Th

zrok is a zero trust networking service that provides a secure overlay mesh to expose local services and files through firewalls and NAT without the need for manual port forwarding. It functions as a zero trust network manager, orchestrating identities, policies, and routers to establish secure connectivity between applications and users. The project distinguishes itself through the use of identity-based routing and hardened HTTP frontends that integrate with external identity providers. These capabilities allow for the creation of identity-aware proxies and secure reverse proxies that authen

myDrive is a self-hosted cloud storage server and web-based file manager. It functions as an encrypted file storage system that allows users to host and manage personal documents and media on their own hardware. The system acts as a multi-backend storage gateway, capable of routing file data to various locations including local disks or remote cloud storage buckets. It uses a document database to manage file metadata, folder structures, and user organization. The platform provides capabilities for uploading and downloading files, organizing content through a trash system, and sharing private

Pingvin Share is a self-hosted file sharing platform designed for uploading and distributing files via secure links. It provides a private alternative to third-party cloud services for managing file transfers. The platform integrates an external security engine to scan uploaded files for malware and threats before they become available. It supports identity management through OpenID Connect integration, allowing user authentication to be delegated to external identity providers. Storage is managed through a gateway that supports both local disk drives and S3-compatible cloud object storage.

JupyterHub is a multi-user platform for hosting and managing isolated Jupyter notebook server instances on a single system or cluster. It serves as a notebook server orchestrator that spawns and monitors individual computing environments on demand. The system uses a plugin-based spawner interface to launch these environments across diverse infrastructure, including local processes, containers, or cloud clusters. It integrates with external identity providers and supports pluggable authentication to verify user identities and secure access. The framework includes centralized administration to

Leantime is an open-source project management platform designed to track tasks, milestones, and workflows using Kanban boards and Gantt charts. It functions as a strategic planning tool that links daily operational tasks to high-level business goals and long-term objectives, while also serving as a time tracking and billing system for managing work hours and client estimations. The platform differentiates itself through an integrated AI-powered project assistant that decomposes complex tasks, generates status reports, and provides project insights. It further distinguishes its offering with a

Docmost is an open-source knowledge management system designed as a collaborative documentation platform for teams. It functions as an enterprise wiki that centralizes organizational information into structured, searchable workspaces, enabling users to create, organize, and share content through a hierarchical system of spaces and pages. The platform distinguishes itself by integrating artificial intelligence directly into the documentation lifecycle. It utilizes vector-based semantic search to allow for natural language queries across stored content and provides AI-assisted tools for draftin

Compodoc is a TypeScript API documentation generator, static site generator, and project architecture visualizer. It parses source code and JSDoc comments to create searchable technical reference sites, API catalogues, and standalone HTML pages. The project distinguishes itself by analyzing import statements to produce dependency graphs and module maps that illustrate the structural relationships within a codebase. It includes specialized support for visualizing Angular projects, NestJS workflows, and Stencil web components, and can embed live working demos directly into documentation pages.

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.

Cronicle is a distributed job scheduler that replaces traditional cron with a browser-based management interface. It runs scheduled tasks across a cluster of servers with automatic failover, using a custom cron parser that intersects day-of-month and day-of-week constraints when both are specified. The system executes jobs through a plugin framework that runs command-line scripts in any language, communicating via JSON over standard input and output. The scheduler provides a web-based real-time dashboard for monitoring running jobs with live logs, resource usage charts, and progress updates.