Jira
Trello
Asana
Basecamp
Wrike
monday.com
ClickUp
Redmine
Postbox
Thunderbird
Mailbird
eM Client
Microsoft Outlook
ProtonMail
Apple Mail
Mailspring
Jira
PostboxJira is recommended for software development teams, agile project management enthusiasts, companies that require detailed workflow customization, and organizations already using other Atlassian products seeking seamless integration.
Postbox is recommended for power users, professionals, and businesses that require advanced email organization features, customizability, and integration with other productivity tools.
Jira may be extremely sluggish and require a large amount of memory on the client side.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
Basecamp - A simple and elegant project management system.
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.