Roundcube

Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client...

Free Open Source Self-Hosted PHP Cloudron

Squirrelmail

SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure...

Free Open Source Self-Hosted PHP

Horde

Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards...

Free Open Source Web Self-Hosted

iRedMail

A fully fledged, free email server solution, an open source project (GPL v2). Use official binary packages from Linux/BSD distributions, with both i386 and x86_64...

Free Open Source Linux BSD Self-Hosted

CacoCloud

A simple, fast and secure PHP/AngularJS based single user feed and mail reader, password and bookmark manager. CacoCloud is divided into a RESTful PHP backend storing...

• Discontinued The project is no longer developed. Last version, 0.1.1, released in February 2015, can be still downloaded from the official website.

Free Open Source Self-Hosted AngularJS

NOCC

NOCC is a webmail client written in PHP. It provides webmail access to IMAP and POP3 accounts.

Free Open Source Web

NeoMail

NeoMail is a web-based mail client that allows users to access their mail spools and send messages. It does not require a POP3 server, or any shell access for the users....

Free Open Source Web

Atmail Email Server

Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows. Features: Webmail Calendar Addressbook ...

Commercial Linux Web

Simple Mail

Simple Mail is a mail client for Firefox. It allows you to get notified, read and write messages for multiple email accounts inside Firefox. Usage: Configure one or...

Free Mac Windows Linux Firefox

Postaci

Postaci (Turkish for Postman) is multiplatform Webmail software which is database independent, multilanguage, POP3/IMAP, and fully MIME-compatible. While using POP3 mode...

Free Open Source Linux