Rainloop

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

• PHP based and customizable more than roundcube, more modern ui Guest • Sep 2017 • 2 agrees and 1 disagrees Disagree   Agree

Free Open Source Self-Hosted JavaScript 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...

• Mailpile needs to run on a computer Guest • Jan 2018 Disagree   Agree
• Mailpile is single-user (personal) environment Guest • Jul 2018 • 1 agrees and 1 disagrees Disagree   Agree

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

Kolab Community

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

Free Open Source Linux Web Self-Hosted

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

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

Mail-in-a-box

Take back control of your email with this easy-to-deploy mail server in a box. Mail-in-a-Box turns a fresh cloud computer into a working mail server. You get contact...

Free Open Source Self-Hosted Roundcube

NeutronMail

Self-hosted server for the ProtonMail client.

• Discontinued No longer supported

Free Open Source Web Self-Hosted

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

Modoboa

Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface . It provides useful components such as an administration panel or...

Free Open Source Linux Self-Hosted

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

Isotope Mail Client

Isotope Mail Client. Contribute to manusa/isotope-mail development by creating an account on GitHub.

Free Open Source Mac Windows Linux Web Self-Hosted ... Kubernetes Docker OpenShift

PrivMX WebMail

Alternative, self-hosted private mail system. End-to-end encryption for messages and attachments. Easy to install and administration. Allows also to create end-to-end...

Free Self-Hosted PHP