Apple Mail is an email client included with the operating systems macOS, iOS and watchOS by Apple Inc.

EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries, e…

LibreOffice ie previously known as OpenOffice which is an open source office suite including text editor, spreadsheet and presentation tools.

Microsoft Office Suite is a software suite consisting of many office utilities.

ONLYOFFICE Document Server is an online office suite comprising viewers and editors for texts, spreadsheets and presentations.

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

Claws Mail is a free and open-source, GTK+-based email and news client. It offers easy configuration and an abundance of features.

KMail is the email component of Kontact, the integrated personal information manager from KDE.

Microsoft Outlook is a personal information manager from Microsoft.

MobiSystems OfficeSuite is the premier mobile office app and the trusted leader for reliably editing any type of office document and attachment.

Apache OpenOffice is a free office package with a text editor, spreadsheet and presentation software.

Polaris Office is a free office service that runs on Android, iOS, Windows and macOS.