Alpine
Mu4e
Mailspring
Thunderbird
Mutt
Claws Mail
Geary
MailMate
Clockwise
Harvest
Toggl
RescueTime
TimeCamp
Pomodone
Futuramo Time Tracker
Timepot
Alpine
ClockwiseClockwise is recommended for teams and individuals who need to streamline their scheduling, enhance productivity, and spend less time coordinating meetings. It's particularly beneficial for remote teams and companies that rely heavily on efficient calendar management.
Mu4e - Starting with version 0.9.8, mu provides an emacs-based e-mail client which uses mu as its back-end: mu4e.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Mailspring - Mailspring is a mail client for Mac, Windows and Linux.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.