
SourceForge
GitHub
GitLab
BitBucket
openDesktop.org
Gitea
Launchpad.net
OSOR
Postbox
Thunderbird
Mailbird
eM Client
Microsoft Outlook
ProtonMail
Apple Mail
Mailspring
SourceForge
PostboxPostbox is recommended for power users, professionals, and businesses that require advanced email organization features, customizability, and integration with other productivity tools.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
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.