LibreOffice

LibreOffice is a free and open-source office suite, a project of The Document Foundation. It was forked from OpenOffice.org in 2010, which was an open-sourced version of the earlier StarOffice. The Li...
Language(s): C++, XML, Java
Operating system(s): Linux, Windows 7+ (XP and Vista for 5.x), Mac OS 10.9+, Android (Viewer); Unofficial: Free BSD, OpenBSD, NetBSD, Haiku, Solaris (v. 5.2.5)
License: MPLv2.0 (secondary license GPL, LGPLv3+ or Apache License 2.0)

Metasfresh

Metasfresh is a responsive, Free and Open Source ERP System. Our aim is to create fast and easy-to-use enterprise software with an outstanding user experience. Equipped with wide and detailed function...
Language(s): Java, JavaScript, XML, SQL
Operating system(s): Server: Linux. Clients: Windows, Mac OS, Linux, Android, iOS.
License: GPLv2/ GPLv3

Nextcloud

Nextcloud is a suite of client-server software for creating and using file hosting services. Nextcloud application functionally is similar to Dropbox. Unlike Dropbox, Nextcloud does not offer off-prem...
Language(s): PHP, JavaScript
Operating system(s): Linux Clients: Windows, macOS, Linux, Android, iOS
License: AGPL v3

OnlyOffice

OnlyOffice (formerly TeamLab), stylized as ONLYOFFICE, is an open source office suite developed by Ascensio System SIA, a company with headquarters in Riga, Latvia. Solution features online document e...
Language(s): HTML, JavaScript, C++
Operating system(s): Windows, Mac OS, Linux, Android, iOS
License: AGPLv3

Open Babel

Open Babel is a chemical toolbox designed to speak the many languages of chemical data. It's an open, collaborative project allowing anyone to search, convert, analyze, or store data from molecular mo...
Language(s): C++
Operating system(s): Windows, Mac OS, Linux, Android
License: General Public License 2.0