Etherpad: A modern really-real-time collaborative document editor.

A collaborative note taking, wiki and documentation platform that scales. Built with Django and React.

Fast, collaborative live terminal sharing over the web

ONLYOFFICE Docs is a free collaborative online office suite comprising viewers and editors for texts, spreadsheets and presentations, forms and PDF, fully compatible with Office Open XML formats: .docx, .xlsx, .pptx and enabling collaborative editing in real time.

Automate code & data workflows with interactive Elixir notebooks

A drop-in javascript spreadsheet library that provides rich features like Excel and Google Sheets

LibRec: A Leading Java Library for Recommender Systems, see

SQLSync is a collaborative offline-first wrapper around SQLite. It is designed to synchronize web application state between users, devices, and the edge.

Online collaborative Whiteboard that is simple, free, easy to use and to deploy

The ultimate list of which programs support Vim-like keybindings natively, or how they can be added with extensions. A collaborative project.

🐙 OctoBase is the open-source database behind AFFiNE, local-first, yet collaborative. A light-weight, scalable, data engine written in Rust.

SyncedStore CRDT is an easy-to-use library for building live, collaborative applications that sync automatically.

json-joy is a library that implements cutting-edge real-time and collaborative editing algorithms and utilities for JSON data models, with a focus on developing the JSON CRDT (Conflict-free Replicated Data Type) specification and implementation.

Bonfire - tend to your digital life in community. Customise and host your own online space and control your experience at the most granular level.

Lightweight collaborative Whiteboard / Sketchboard

Typing in Tandem. Decentralized, cross-editor, collaborative text-editing!

📑 Collaborative document editing using Markdown

A collection of multi agent environments based on OpenAI gym.

open source audio and video transcription software

Production Data Science: a workflow for collaborative data science aimed at production

Mindmapping made simple: Host and create your own mindmaps. Share your mindmap sessions with your team and collaborate on mindmaps.

Cervantes is an open-source, collaborative platform designed specifically for pentesters and red teams. It serves as a comprehensive management tool, streamlining the organization of projects, clients, vulnerabilities, and reports in a single, centralized location.

Open-Source, collaborative, digital Whiteboard

🦋️ SuperDoc - modern document editing

Collaborative markdown with math

专注于解决推荐领域与搜索领域的两个核心问题:排序预测(Ranking)和评分预测(Rating). 为相关领域的研发人员提供完整的通用设计与参考实现. 涵盖了70多种排序预测与评分预测算法,是最快最全的Java推荐与搜索引擎.

This methodology provides a structured approach for collaborating with AI systems on software development projects. It addresses common issues like code bloat, architectural drift, and context dilution through systematic constraints and validation checkpoints.

Encrypted notebook

CRADLE is a collaborative platform for Cyber Threat Intelligence analysts. It streamlines threat investigations with integrated note-taking, automated data linking, interactive visualizations, and robust access control. Enhance your CTI workflow from analysis to reporting—all in one secure space.

Soft and gentle rich text editing for Flutter applications.