| Developer(s) | Open-Xchange AG |
|---|---|
| Initial release | 2005 |
| Stable release | 7.10.6 [1] / December 10, 2021 |
| Repository | |
| Operating system | SLES, RHEL, Debian, Univention Corporate Server, CentOS |
| Type | Web desktop |
| License | Community Edition: Backend - GNU Affero General Public License (AGPL) v.3.0; Frontend - GNU AGPL v.3.0 |
| Website | open-xchange.com |
Open-Xchange is an open source web-based office productivity software suite.
Founded in 2005 by Rafael Laguna and Frank Hoberg, the software was released in December of the same year, and started as a Linux-based email and groupware program that was positioned as open-source alternative to Microsoft Exchange. [2]
Andreas Gauger took over as CEO of Open-Xchange AG in May 2020.
The software includes a set of applications for email, contacts, calendars, media and documents. It integrates message streams from Google Mail, Hotmail, Facebook, Twitter and LinkedIn, and can be used as an alternative with integrated functionality similar to Microsoft Exchange Server and Office 365. [3]
In February 2014, file syncing and collaboration features have been added to the OX App Suite family.[ citation needed ]
In September 2014, the company introduced a tool called OX Guard to their existing open source email server. Individuals and businesses can use the software to operate their own email services. [4] In July 2015 PGP support has been announced for OX Guard. [5]
Community Edition: Backend - GNU Affero General Public License (AGPL) v.3.0; Frontend - GNU AGPL v.3.0.
Microsoft Office, or simply Office, is a family of client software, server software, and services developed by Microsoft. It was first announced by Bill Gates on August 1, 1988, at COMDEX in Las Vegas. Initially a marketing term for an office suite, the first version of Office contained Microsoft Word, Microsoft Excel, and Microsoft PowerPoint. Over the years, Office applications have grown substantially closer with shared features such as a common spell checker, Object Linking and Embedding data integration and Visual Basic for Applications scripting language. Microsoft also positions Office as a development platform for line-of-business software under the Office Business Applications brand.
Pretty Good Privacy (PGP) is an encryption program that provides cryptographic privacy and authentication for data communication. PGP is used for signing, encrypting, and decrypting texts, e-mails, files, directories, and whole disk partitions and to increase the security of e-mail communications. Phil Zimmermann developed PGP in 1991.
GNU Privacy Guard is a free-software replacement for Symantec's PGP cryptographic software suite. The software is compliant with RFC 4880, the IETF standards-track specification of OpenPGP. Modern versions of PGP are interoperable with GnuPG and other OpenPGP-compliant systems. GnuPG is however expected, as of April 2024, to break compliance with the upcoming revision of OpenPGP and thus with other implementations that will continue to comply.
Microsoft Outlook is a personal information manager software system from Microsoft, available as a part of the Microsoft 365 software suites. Though primarily being popular as an email client for businesses, Outlook also includes functions such as calendaring, task managing, contact managing, note-taking, journal logging, web browsing, and RSS news aggregation.
In computer security, a key server is a computer that receives and then serves existing cryptographic keys to users or other programs. The users' programs can be running on the same network as the key server or on another networked computer.
The following tables compare general and technical features of notable email client programs.
Outlook on the web is a personal information manager web app from Microsoft. It is a web-based version of Microsoft Outlook, and is included in Exchange Server and Exchange Online
Zimbra Collaboration, formerly known as the Zimbra Collaboration Suite (ZCS) before 2019, is a collaborative software suite that includes an email server and a web client.
The comparison of mail servers covers mail transfer agents (MTAs), mail delivery agents, and other computer software that provide e-mail services.
Gpg4win is an email and file encryption package for most versions of Microsoft Windows and Microsoft Outlook, which utilises the GnuPG framework for symmetric and public-key cryptography, such as data encryption, digital signatures, hash calculations etc.
Zarafa was an open-source groupware application that originated in the city of Delft in the Netherlands. The company that developed Zarafa, previously known as Connectux, is also called Zarafa. The Zarafa groupware provided email storage on the server side and offered its own Ajax-based mail client called WebAccess and a HTML5-based, WebApp. Advanced features were available in commercially supported versions. Zarafa has been superseded by Kopano.
Feng Office Community Edition is an open-source collaboration platform developed and supported by Feng Office and the OpenGoo community. It is a fully featured online office suite with a similar set of features as other online office suites, like Google Workspace, Microsoft 365, Zimbra, LibreOffice Online and Zoho Office Suite. The application can be downloaded and installed on a server.
Univention Corporate Server (UCS) is a server operating system derived from Debian with an integrated management system for the central and cross-platform administration of servers, services, clients, desktops and users as well as virtualized computers operated in UCS. In addition to the operation of local, virtual instances, UCS can also be operated in cloud environments. Via the integration of the open source software Samba 4, Univention also supports the functions provided in many companies by Microsoft Active Directory for the administration of computers operated with Microsoft Windows. UCS-based components and UCS-certified, third-party products can be installed via the Univention App Center. UCS provides all App Center applications with a runtime environment and services for the operation including a central, consistent management of the apps. Docker containers can also be run on UCS systems and several of the apps available in the App Center are Docker-based.
pretty Easy privacy was a pluggable data encryption and verification system that provided automatic cryptographic key management through a set of libraries for written digital communications.
Mailfence is secure encrypted email service that offers OpenPGP based end-to-end encryption and digital signatures. It was launched in November 2013 by Belgium-based company ContactOffice Group that has been operating an online collaboration suite since 1999.
Kopano is an open-source groupware application suite originally based on Zarafa. The initial version of Kopano Core (KC) was forked from the then-current release of Zarafa Collaboration Platform, and superseded ZCP in terms of lineage as ZCP switched to maintenance mode with patches flowing from KC. Kopano WebApp similarly descended from Zarafa WebApp. Since October 2017, Kopano Core is also known more specifically as Kopano Groupware Core, since Kopano B.V. developed more products that were not directly requiring groupware components.
Microsoft 365 is a product family of productivity software, collaboration and cloud-based services owned by Microsoft. It encompasses online services such as Outlook.com, OneDrive, Microsoft Teams, programs formerly marketed under the name Microsoft Office, enterprise products and services associated with these products such as Exchange Server, SharePoint, and Viva Engage. It also covers subscription plans encompassing these products, including those that include subscription-based licenses to desktop and mobile software, and hosted email and intranet services.
Collabora Online is an open source online office suite built on LibreOffice Technology, enabling web-based collaborative real-time editing of word processing documents, spreadsheets, presentations, and vector graphics. Optional apps are available for desktops, laptops, tablets, smartphones, and Chromebooks.
