Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.
Station is the first open-source smart browser for busy people. A single place for all of your web applications.
The project is not actively maintained anymore. Last version, 2.0.9, released in July 2021, can be still downloaded from GitHub
Station vs Shift opinions
Gives me the functionality of multiple apps, in one location, for free. Unlike Shift.
Free for individuals, basic options are open contrary to Shift. Many options available for Station.
Best free alternative shift
It is free! Not only that, but it gives the most important feature of sleeping windows when they are not in use. Shift (and other programs like it) would be worth it if they didn't charge a yearly fee.
Everything from Shift, but for free. Best free alternative I have tried
It's almost the same exact thing but free
Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more.
Mailspring vs Shift opinions
Shift does so many other things (e.g. Messenger, Asana, AWS etc.). Mailspring is only an email client.
It is just an email client, not a productivity app aggregator.
Hamsket is a fork of Rambox that was started when Rambox moved from being totally free to a "freemium" model.
LucaMail is an open source, cross-platform email client. LucaMail is developed to provide cross-platform alternative to Email Clients that are really exists. LucaMail focuses on modern technologies as well as maintaining a user-friendly UI.
Kube is a modern communication and collaboration client built with QtQuick on top of a high performance, low resource usage core. It provides online and offline access to all your mail, contacts, calendars, notes, todo's and more.
Nylas Mail Lives is a fork of Nylas Mail that fixes many longstanding issues, improves the client experience, and is committed to publish new releases.Discontinued
On its github page it states it is archived and is no longer maintained.
One desktop app for many apps, included Gmail, Inbox, Skype, Facebook Messenger, but also professional collaboration platforms like Salesforce, GitHub, Confluence, Bitbucket and many more.Discontinued
Official website no longer available, no updates on GitHub since June 2017.