CacoCloud

A simple, fast and secure PHP/AngularJS based single user feed and mail reader, password and…

Claws Mail

Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response

Encryption and key management for C# and Java

Cyph is the name of a completely free chatting website that provides its visitors with a secure and safe chatting environment.

All your E-mail, from all your accounts, in one place. Cypht is like a news reader, but for E-mail.

Email, calendars, and contacts to highest standards of security, privacy and reliability.

Completely private chat email, w/ encrypted email messaging

Horde Groupware is a free, enterprise ready, browser based collaboration suite.

Email app with automatic encryption

Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.

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

Self-hosted server for the ProtonMail client.

Web-based IMAP email client

Keep your conversations secure, everywhere.

Soverin is the honest email service that doesn’t sell your data.

SquirrelMail is a standards-based webmail package written in PHP.

Open Source WebMail Lite is a free community edition of full-featured WebMail Pro server applicatio…

A fully fledged, free email server solution, an open source project (GPL v2).

phlyMail is an advanced webmail and groupware solution featuring unlimited profiles, multiple…