Mailman is a popular open-source software for managing electronic mailing lists.
Best Groups.io Alternatives ranked by AI · updated Aug 2026
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Groups.io is a group communication platform centered on email-based discussion groups. It adds web archives, calendars, file storage, polls, wikis, and member management for communities and organizations.
Top 6 Groups.io alternatives
Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
HumHub is a flexible open-source social network application built to provide you with the tools to communicate and collaborate.
Free, with optional paid extensions
Sympa is a scalable and secure open-source mailing list software.
Dada Mail is a contemporary mailing list manager with a focus on ease of use and robust features.
Free and Paid Plans Available
Discourse is an open-source Internet forum and mailing list management software application designed for modern web browsers.
Free / Paid plans available
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