Signal sends high-quality group, text, voice, video, document, and picture messages anywhere in the world. Signal messages and calls are always end-to-end encrypted and painstakingly engineered to keep your communication safe. 

Signal - Secure Messaging

HedgeDoc (formerly known as CodiMD) is an open-source, web-based, self-hosted, collaborative markdown editor. You can use it to easily collaborate on notes, graphs and even presentations in real-time. All you need to do is to share your note-link to your co-workers and they’re ready to go.

HedgeDoc - The best platform to write and share markdown

Documize Community is an open source modern, lightweight alternative to Confluence. It is built for technical and non-technical users, Designed to unify both customer-facing and internal documentation. It supports Organization through labels, spaces and categories. 

Documize Community - Modern Confluence alternative designed for internal & external docs, built with Golang + EmberJS

Feng Office is a web based collaboration platform. It helps to manage your projects and business services, Collaborate with your team and your customers, Organize and share documents and files. Feng Office allows businesses to manage project tasks, billing, documents, communication with co-workers, customers and vendors, schedule meetings and events, and share every kind of electronic information. 

Feng Office allows you to store and share all types of documents. Text documents and presentations can be created or edited directly in Feng Office without the requirement of any additional software in your computer. Tasks and milestones could be tracked.

Feng Office is a web based collaboration platform. It helps to manage your projects and business services, Collaborate with your team and your customers, Organize and share documents and files. Feng Office allows businesses to manage project tasks, billing, documents, communication with co-workers, customers and vendors, schedule meetings and events, and share every kind of electronic information.

Feng Office -  A Collaboration Platform and online office

Silverpeas is a libre collaborative portal solution with an intuitive user experience offering more than 30 ready to use applications like Document Management, Project Management, ECM, Image Gallery, Mail Achives, Room Reservations, Workflows, Temporally downloads, SSO (using CAS), Blogs, Wikis, Yellow Pages, Social Network, Survey, Quiz, Newsletter, RSS and lot more.

Silverpeas - Collaborative Platform

Kopano Core provides the foundation for groupware messaging enabling clients such as Kopano WebApp, Kopano DeskApp, mobile and sync clients. With its modular architecture, Kopano Core enables the possibility for a variety of setup scenarios, scalable from a very low-powered system to a multi-datacenter setup providing messaging capabilities to tens of thousands of users.
 
Kopano Core provides all traditional groupware functionality with e-mail, advanced calendaring, contacts, tasks and notes. With full support for ACLs, public folders, delegation, enterprise search and much more, Kopano Core is perfectly suited for usage as messaging platform with professional needs in communication. The native implementation of MAPI allows conversion-less interoperability providing its rich feature-set to a broad range of clients, including mobile integration.

Kopano Core provides the foundation for groupware messaging enabling clients such as Kopano WebApp, Kopano DeskApp, mobile and sync clients. With its modular architecture, Kopano Core enables the possibility for a variety of setup scenarios, scalable from a very low-powered system to a multi-datacenter setup providing messaging capabilities to tens of thousands of users.

Kopano - Collaboration made easy

ONLYOFFICE Desktop Editors is a free and open source office suite comprises text documents, spreadsheets and presentations allowing to create, view and edit documents of any size and complexity, to easily switch to the online mode for real-time co-editing and collaboration. Features as reviewing, commenting and chat are available as well. Deal with multiple files within one and the same window thanks to the tab-based user interface.
 
ONLYOFFICE Desktop Editors is fully compatible with MS Office and OpenDocument formats and allos you to work with most popular formats: DOC, DOCX, ODT, RTF, TXT, PDF, HTML, EPUB, XPS, DjVu, XLS, XLSX, ODS, CSV, PPT, PPTX, ODP.
 
The application also allows connecting third-party plugins, making it easy for developers to write their own extensions and add new features to the editors. Actually, you can create templates, add a video from YouTube, insert ClipArts, recognize text from screenshots/pictures, use photo editor, use Symbol Tabelle to insert special symbols, become multilingual with Yandex Translator or create your own one.
 
Desktop editors are a cross-platform solution available for Windows 10, 8.1, 8, 7, XP, Vista (x32 and x64), Debian, Ubuntu and other Linux distributions based on RPM, Mac OS 10.10 and newer. Besides platform-specific versions there is also a portable option.

ONLYOFFICE Desktop Editors is a free and open source office suite comprises text documents, spreadsheets and presentations allowing to create, view and edit documents of any size and complexity, to easily switch to the online mode for real-time co-editing and collaboration. Features as reviewing, commenting and chat are available as well. Deal with multiple files within one and the same window thanks to the tab-based user interface

ONLYOFFICE Desktop Editors - An office suite that combines text, spreadsheet and presentation editors allowing to create, view and edit local documents

WebTop is a Web2.0 application platform. It provides WebTop Services as the development framework and WebTop Groupware as a full featured bundle of services that form an Enteprise Cloud Collaboration solution with Mail, Calendar, Contacts and more. 
 
WebTop Services consists of a rich Web2.0 developement framework based on ExtJS/Java, with prebuilt key functionalities to allow for a quick and easy implementation and deployment of applications in the form of services available inside a Web Desktop. Its key feature include authentication, profiling, access control to services, layout, session management, server events polling, internationalization, themes customization and more.

WebTop is a Web2.0 application platform. It provides WebTop Services as the development framework and WebTop Groupware as a full featured bundle of services that form an Enteprise Cloud Collaboration solution with Mail, Calendar, Contacts and more. 


WebTop - Enterprise Collaboration suite

LinShare is an Open Source secure file sharing application intended to cover your business security and file transfer needs. It provides support to collaborate and transfer very big files (more than 100Gb). It is self-hosted and you have control over your data. Share files among your teams, save contact lists, create deposits to allow your external contacts to upload files, and more.

LinShare - Open Source Secure Files Sharing

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