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

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

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

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

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.

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

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

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

An open network for secure, decentralized communication.

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

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

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