Rainloop
Simple, modern & fast web-based email client. Modest system requirements, decent performance, simple installation and upgrade, no database required. All these make RainLoop Webmail a perfect choice for your email solution.
Horde
Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts ...
Squirrelmail
SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP ...
Atmail Email Server
Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows. Fea ...
Isotope Mail Client
Isotope mail client is a free open source webmail application built with a microservice architecture vision in mind. As of now ...
NeutronMail
Self-hosted server for the ProtonMail client.
Postaci
Postaci (Turkish for Postman) is multiplatform Webmail software which is database independent, multilanguage, POP3/IMAP, and f ...
Cypht
Cypht is an Open Source webmail application written in PHP and JavaScript that speaks native IMAP, POP3, and SMTP. This is a t ...
June.ai
June.ai is on a mission to replace email with something way better. June is a digital communication hub that completely replac ...
PrivMX WebMail
Alternative, self-hosted private mail system. End-to-end encryption for messages and attachments. Easy to install and administ ...
Roundcube
Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functi ...
turing-email
Mailpile
Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is ...