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SquirrelMail is a PHP-based Web email client. It includes built-in pure PHP support for IMAP and SMTP, and renders all pages in pure HTML 4.0 for maximum compatibility across browsers. It has strong MIME support and a flexible plugin system.
MultiMail is an offline mail packet reader for Unix and other systems. It currently supports the Blue Wave, QWK, OMEN, OPX and SOUP formats. It has a full screen, color user interface, built with the curses library.
NOCC is a simple and fast Webmail client which can handle POP3 and IMAP mailboxes and sends email via SMTP. It is written with PHP, has low requirements (no database, frames). Features multi-language support, MIME attachments, displays HTML messages.
The installation guide comes with the source code:
https://sourceforge.net/p/nocc/code/HEAD/tree/trunk/webmail/docs/INSTALL
If you encounter problems or bugs you can always try the current HEAD...
jwma (java webmail app) uses jakarta mail (formerly javamail) to provide access to an imap email store. Multiple users can authenticate, read, send and manipulate email storage and persist a list of contacts, email identities and their own individual preferences.
It works with email stored in mbox or maildir format or stored in a derby database; it has been tested with dovecot.james and exim4. See http://jwma.sourceforge.net/ for further details.
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SaltOS, ERP, CRM, Business Management Suite, Josep Sanz Campderrós
SaltOS is a Business Management solution 100% Cloud Computing. It integrates features like CRM (Customer Relation Management) and ERP (Enterprise Resource Planning). Moreover is it licensed as 100% free software GPL-3.0.
Jnestor is a majordomo developed in java: it can reads an IMAP/POP3 folder (email folder), identifies the elements in it and process them, transforming them as Mantis issues.
The software is still experimental, but it passed succesfully the last stages of testing and I hope I will release a stable version soon.
EGroupware has moved to Github, please find all our downloads there: https://github.com/EGroupware/egroupware/releases
EGroupware is a multi-user, web-based groupware suite. Currently available modules include: email, addressbook, calendar, infolog (notes, to-do's, phone calls), content management, wiki, project management, tracker, timesheet, knowledge base, CalDAV/CardDAV
Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. Its a powerful mail management tool with features to enhance your productivity and communication.
Roundcube Webmail is a browser-based, multilingual IMAP client with an application-like user interface. Roundcube provides the full functionality you'd expect from an email client, including MIME support, address book, folder manipulation, message searching, and spell check. Roundcube is written in PHP and JavaScript.
Business webmail modular application with mobile client
The most complete Business Webmail with Mobile client application for companies of all sizes. All the core functions for business like calendaring and integrated webmail, plus the capability of converting emails into business objects such as: quotes, invoices, marketing stuff, customer requests, project management and more.
A simple way to have a unique flow of information from email request from customers to invoices! You only have to choose which modules you want to activate and is...
conjoon is a webmail client with personal information management ambitions. It runs completely in a web browser and features a broad range of functionality known from desktop applications; it provides functionality for organizing RSS feeds, Twitter and Email accounts. It comes with an installation wizard that helps with installing and updating the application. Built using Zend Framework and Ext JS, it focuses on easy system integration and usability on the client side. See the User Guide at...
JMailChecker is a Java/Swing-based desktop-application for monitoring email-accounts using pop3 or imap. Inspired by the "Magic Mail Monitor" but written in Java to be used under Linux or Mac OS as well.
Hastymail is a fast, secure, rfc-compliant, cross-platform IMAP/SMTP client application written in PHP providing a clean web interface for sending and reading E-mail.
This version of Hastymail is no longer being developed. We are now working on a new version, Hastymail 3, AKA, "Cypht".
http://cypht.org
Special Folders Plugin is a plugin for the popular webmail Roundcube. This plugin lets the admin define new special folders, which will be displayed at top of folders lists. Admin can directly choose the real mail folder, a name for it and the icon.
Toutateam is a groupware application aimed for everyday work. It allows to share files, mails, calendar, communicate through forum or instant messaging, wiki...
Based on the famous PHProjekt, it uses PHP and MySQL and is accessed through a web-browser.
Mailcrypt is an Emacs Lisp package which provides a simple interface to public key cryptography with PGP [and now GnuPG!].
Mailcrypt makes strong cryptography a fully integrated part of your
normal mail and news handling environment
Engroup is the web enterprise groupware promotes various collaboration methods plus adding company business management modules. Features are included: CRM, HRM, Document Management, Project Management, Chat, Wiki, Forum, News, Todo.
quickmail.php is a script that reads email from a mail server and outputs it in RSS format that can be displayed in a browser (as XML, using included XSL/CSS) or RSS aggregator or as WML for use on WAP devices (mobile phones/PDAs).
phlyMail is a Webmail and data hosting application. It features IMAP, POP3, SMS, Fax support, a Calendar, Bookmarks, files manager. Multiuser and single user editions available.