MediaWiki is a free and open-source collaboration and documentation platform. It helps user to collect and organize knowledge and make it available to people

Rocket.Chat is a free and open source team chat platform. It is designed for team collaboration and customer engagement

DokuWiki is a wiki application written in the PHP programming language. It operates on plain text files and does not need a database

Elasticsearch is a search engine which is based on the Lucene library. It provides a schema-free JSON documents and full-text search engine with an HTTP web interface

Pimcore is an open-source enterprise PHP software platform used for content management, digital asset management, master data management, product information management, master data management and digital commerce

Mattermost is an open-source chat service which can aslo be used for file sharing, search, and integrations. It is an internal chat for organisations and companies and serves as a open-source alternative

Jitsi is a collection of free and open-source multiplatform voice, videoconferencing and instant messaging applications for the web platform, Windows, Linux, macOS, iOS and Android. The Jitsi project began with the Jitsi Desktop.

Akaunting is an online, open source and free accounting software used by small businesses. Its main characteristics are managing money, invoicing and tracking expenses

Dropbox gives you secure access to all your files. Collaborate with friends, family, and coworkers from any device. Back up files - From photos and videos to presentations and tax paperwork, Dropbox Basic helps you keep all your most important—and irreplaceable—files safe: File sync: Back up anything by storing it in the Dropbox folder on your computer. And with our desktop and mobile apps, you can automatically upload photos and videos to Dropbox from your phone, camera, or SD card.

Kanboard is a free and open source Kanban project management software. It is widely used to visualize work, manage tasks inside the project, it is self hosted

Etherpad is an open-source real-time editor which allosw users to edit a text document and see all other edits made by other participants. It also has a chat box which allows communication

OnlyOffice is an online office suite integrated with a collaboration platform to manage documents, projects, team and customer relations in one place.

Camunda is a free and open source web analytics application that runs on a PHP/MySQL webserver. It tracks online visits to websites and those visits are used in analysis for reports creation

Matomo is a free and open source web analytics application that runs on a PHP/MySQL webserver. It tracks online visits to websites and those visits are used in analysis for reports creation

OpenProject is a web-based project management system for location-independent team collaboration.