Alternatives to Squirrelmail for all platforms with any license

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
Hostable PGP Encryption Add a feature

140 Like
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
POP3 Support Web-Based Add a feature

107 Like
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
Encrypted email Add a feature

43 Like
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
CalDAV Add a feature

24 Like
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
No features added Add a feature

15 Like
Soverin

Soverin is an independent private company based in Amsterdam, run by a team of internet enthusiasts who want to create great products that are safe, beautiful and easy...
- This is a service, not a self hosted application. Guest • Aug 2017 • 1 agrees and 0 disagrees
Commercial Web
No features added Add a feature

15 Like
NeutronMail

Self-hosted server for the ProtonMail client.
- Discontinued No longer supported
Free Open Source Web Self-Hosted
Apps with End-to-End Encryption Web-Based Add a feature

7 Like
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
Web-Based Add a feature

9 Like
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
No features added Add a feature

6 Like
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
Built-in RSS reader Apps with End-to-End Encryption Modules POP3 Support Add a feature

4 Like
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
No features added Add a feature

3 Like
Turing Email

Turing Email is an email client that you can use with your existing email accounts that is packed with innovative features packaged into a beautiful design. Turing is...

Commercial Mac Windows Web Android iPhone ... Android Tablet iPad
Email scheduling Email tracking Salesforce integration Add a feature

3 Like
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
File-sync Group Mail Add a feature

7 Like
NOCC

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

Free Open Source Web
POP3 Support Add a feature

4 Like
phlyMail

phlyMail is an advanced webmail and groupware solution featuring unlimited profiles, multiple users, a calendar, contacts list and much more

Freemium Web
POP3 Support Add a feature

2 Like