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

Mailpile

Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and...

Free Open Source Mac Windows Linux Web Self-Hosted ... OpenPGP

Rainloop

Simple, modern & fast web-based email client. Modest system requirements, decent performance, simple installation and upgrade, no database required. All these make...

Free Open Source Self-Hosted JavaScript PHP Cloudron

Kolab Community

Kolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite.

Free Open Source Linux Web Self-Hosted

Zimbra Collaboration Suite

Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra...

Commercial Linux Web

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

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

Webmail Lite

Open Source WebMail Lite is a free community edition of full-featured WebMail Pro server application intended for users who need a clean and simple web mail...

Free Open Source Web 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

OX Open-Xchange

Open-Xchange Server 6 is the most advanced Linux based Groupware solution f. Open-Xchange Server 6 is superior in the following areas: • Open-Xchange Server 6 offers...

Free Open Source Linux Web

InboxCube

For us Email is our lives. At the heart of our inbox lives a personal network of information and content that privately defines who we are. We believe that something...

Free iPhone

NaSMail

NaSMail 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 HTML 4.01...

Free Open Source Web

Cypht

All your E-mail, from all your accounts, in one place. Cypht is like a news reader, but for E-mail. Cypht does not replace your existing accounts - it combines them into...

Free Open Source Self-Hosted

TrulyMail

TrulyMail is an email client and a private messaging system, very feature rich (voice recording, script blocking, etc.). Features: Spell checking in nine...

• Discontinued The program is no longer developed. Last version, 6.0.2, released in January 2017, can be still downloaded from SoftPedia.

Freemium Windows

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