Alternatives to Kontact
KDE's personal information manager that combines mail, calendar, contacts and news in one window. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Kontact
KDE's personal information manager that combines mail, calendar, contacts and news in one window.
Replacements
Listings that take over the same core job as Kontact.
Evolution
GNOME's mail, calendar, contacts and tasks suite, and the usual answer for Exchange on Linux.
Evolution is GNOME's mail, calendar, contacts and tasks suite with an Exchange Web Services plugin, fitting GNOME rather than KDE Plasma.
Thunderbird
Mozilla’s desktop mail client, with calendar, contacts and a unified inbox, funded by donations rather than ads.
Thunderbird combines mail, calendar, contacts and tasks with add-ons and built-in OpenPGP, and also runs on Windows, macOS and Android.
Betterbird
A Thunderbird fork that ships extra fixes and features, and can run side by side on the same profile.
Betterbird is a Thunderbird fork with extra fixes, bringing mail, calendar and contacts across Windows, macOS and Linux without the Akonadi dependency.
eM Client
A polished commercial mail, calendar and contacts client for Windows and Mac, with a free tier capped at two accounts.
eM Client offers mail, calendar, tasks, contacts and notes in one window, but has no Linux version and is closed source with a two-account free tier.
Also worth comparing
These listings name Kontact as their own alternative, so the relationship runs both ways.
calcurse
A text-based calendar and to-do application for the terminal with reminders and scripting options.
Kontact moves calendar and tasks into a graphical KDE application that also handles mail and contacts, works offline, and supports common providers.
Similar software
Related functionality, not a direct replacement.
KMail
KDE's email client with IMAP, filtering and OpenPGP support.
Balsa
A lightweight GTK email client for the GNOME desktop.
Geary
GNOME email client built around conversation threads.
Claws Mail
A fast, keyboard-driven email client that loads a hundred thousand message folder without thinking about it.
