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Thunderbird delivers. Enjoy safe, fast, and easy email, with intelligent spam filters, quick message search, and customizable views. Brought to you by Mozilla, Thunderbird makes email better.
User web site:
http://www.mozilla.com/thunderbird
Postfix is Wietse Venema's mailer that started life as an alternative to the widely-used Sendmail program. Postfix attempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users. Thus, the outside has a sendmail-ish flavor, but the inside is completely different.
SpamAssassin is a spam filter that can be used on a wide variety of email systems including procmail, sendmail, Postfix, qmail, and many others.
Mutt is a small but very powerful text-based mail client for Unix operating systems.
Though written from scratch, Mutt's initial interface was based largely on the ELM mail client. To a large extent, Mutt is still very ELM-like in presentation of
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information in menus (and in fact, ELM users will find it quite painless to switch as the default key bindings are identical). As development progressed, features found in other popular clients such as PINE and MUSH have been added, the result being a hybrid, or "mutt." [Less]
Clam AntiVirus (ClamAV) is an anti-virus toolkit for Unix. The main purpose of this software is the integration with mail servers (attachment scanning). The package provides a flexible and scalable multi-threaded daemon, a commandline scanner, and a
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tool for automatic updating via Internet. The programs are based on a shared library distributed with the Clam AntiVirus package, which you can use in your own software. [Less]
Evolution provides integrated mail, addressbook and calendaring functionality to users of the GNOME desktop.
KMail is the email component of Kontact, the integrated personal information manager of KDE.
GNU Mailman is software to help manage email discussion lists and e-newsletters. Its integrated Web interface provides easy-to-use access for list members and list administrators. Mailman supports built-in archiving, automatic bounce processing
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, content filtering, digest delivery, spam filters, topics, Usenet gateways, and more. It is fully internationalized, and supports digests and email commands. It runs on any Linux or Unix-like operating system and is compatible with most email and Web servers, mail readers, and Web browsers. [Less]
Dovecot is an open source IMAP and POP3 server for Linux/UNIX-like systems, written with security primarily in mind.
RoundCube Webmail is a browser-based, multilingual IMAP client with an application-like user interface. It provides the full functionality you expect from an email client, including MIME support, address book, folder manipulation, and message filters. The user interface is fully skinnable using XHTML and CSS 2.
Exim is a message transfer agent (MTA) developed for Unix systems connected to the Internet. It is similar to Smail 3, but expands on Smail features.
RT is an enterprise-grade ticketing system which enables a group of people to intelligently and efficiently manage tasks, issues, and requests submitted by a community of users.
The RT platform has been under development since 1996, and is used by
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systems administrators, customer support staffs, IT managers, developers and marketing departments at thousands of sites around the world.
Written in object-oriented Perl, RT is a high-level, portable, platform independent system that eases collaboration within organizations and makes it easy for them to take care of their customers.
RT is used by Fortune 100 companies, government agencies, educational institutions, and development organizations worldwide. [Less]
Gnus is a mail- and news- reader that is incorporated into GNU Emacs. Gnus is independently developed, and is frequently merged into GNU Emacs.
SquirrelMail is a standards-based Webmail package. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages are rendered in pure HTML 4.0 for maximum compatibility across browsers. It has very few requirements, and is very
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easy to configure and install. It has all the functionality you would want from an email client, including strong MIME support, address books, and folder manipulation. [Less]
Fetchmail is a full-featured, robust, well-documented remote-mail retrieval and forwarding utility intended to be used over on-demand TCP/IP links (such as SLIP or PPP connections). It supports every remote-mail protocol now in use on the Internet:
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POP2, POP3, RPOP, APOP, KPOP, all flavors of IMAP, ETRN, and ODMR. It can even support IPv6 and IPSEC.
Fetchmail retrieves mail from remote mail servers and forwards it via SMTP, so it can then be read by normal mail user agents such as mutt, elm(1) or BSD Mail. It allows all your system MTA's filtering, forwarding, and aliasing facilities to work just as they would on normal mail.
Fetchmail offers better protection against password-sniffing than any other Unix remote-mail client. It supports APOP, KPOP, OTP, Compuserve RPA, Microsoft NTLM, an [Less]
Beagle is a desktop-independent service for indexing and searching
your data. The Beagle daemon transparently monitors your data and updates the index to reflect any changes. On an inotify-enabled system, these updates (e.g. new files, emails
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, chat) happen more-or-less in real time. Beagle supports many different file formats and can index files/email/browsing history/chat logs/RSS feeds etc. [Less]
Claws Mail is a GTK+ based, lightweight, and fast email client. Almost all commands are accessible with the keyboard. It also has many features such as multiple accounts, POP3/SMTP/IMAP/NNTP support, OpenSSL, GnuPG, and LDAP support, a plugin system
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, spell checking, filtering, Actions, spam and virus filters, an address book, internationalization, and much more.
NOTE!!!!
ohloh does not support CVS branches, the summary given below is incorrect!! [Less]
eZ components is an enterprise ready general purpose PHP components library by eZ systems. As a collection of high quality independent building blocks for PHP application development eZ components will both speed up development and reduce risks.
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An application can use one or more components effortlessly as they all adhere to the same naming conventions and follow the same structure. [Less]
Liferay Portal is the world's leading enterprise open source portal framework, offering integrated Web publishing and content management, an enterprise service bus and service-oriented architecture, and compatibility with all major IT infrastructures.
The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, Webmail, and mailing list services within a single
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consistent framework. Individual components can be enabled or disabled at will. Courier implements basic Web-based calendaring and scheduling services integrated in the Webmail module. [Less]
Sendmail is a remarkably flexible program, supporting many kinds of mail transfer and delivery including the overwhelmingly popular SMTP.
Horde is both an Open Source software project and an application framework written in PHP.
The application framework is currently the basis for 50 applications written by developers from around the world, including the flagship IMP Webmail client
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, the popular Chora repository viewer, and a complete groupware suite. The guiding principles of the Horde Project are to create solid standard-based applications using intelligent object oriented design, and wide-ranging platform and backend support. There is great emphasis on making Horde as friendly to non-English speakers as possible. The Horde Framework currently supports many localization features such as unicode and right-to-left text, and is shipped with translations in over 40 languages. [Less]
Zimbra - SourceForge edition is open source server and client software for messaging and collaboration - email, group calendaring, contacts, and web document management and authoring. The Zimbra server is available for Linux, Mac OS X, appliances
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, and virtualization platforms. The Zimbra Web 2.0 Ajax client runs on Firefox, Safari, and IE, and features easy integration / mash-ups of web portals, business applications, and VoIP using web services. [Less]
qmail is a modern SMTP server which makes sendmail obsolete, written by Dan Bernstein. Qmail was released under the public domain in november 2007.
Procmail can be used to create mail-servers, mailing lists, sort your incoming mail into separate folders/files (real convenient when subscribing to one or more mailing lists or for prioritising your mail), preprocess your mail, start any programs
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upon mail arrival (e.g. to generate different chimes on your workstation for different types of mail) or selectively forward certain incoming mail automatically to someone. [Less]
SeaMonkey is all-in-one internet application suite. It consist of web-browser, e-mail and newsgroup client, IRC client and HTML editor.
OTRS is an enterprise-grade Open source Ticket Request System (also well known as trouble ticket system) with more than 1,100 features to provide IT service management. The system is built to allow your support, sales, pre-sales, billing, internal
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IT, helpdesk, etc. department to react quickly to inbound inquiries.
OTRS is also the framework for SIRIOS, an incident and advisory system for CERTs (Computer Emergency Response Teams).
OTRS is also the framework for OTRS::ITSM, an ITIL compliant Open Source IT Service Management Solution. [Less]
The Cyrus IMAP server differs from other IMAP server implementations in that it is generally intended to be run on sealed servers, where normal users are not permitted to log in. The mailbox database is stored in parts of the filesystem that are
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private to the Cyrus IMAP system. All user access to mail is through the IMAP, POP3, or KPOP protocols.
The private mailbox database design gives the server large advantages in efficiency, scalability, and administratability. Multiple concurrent read/write connections to the same mailbox are permitted. The server supports access control lists on mailboxes and storage quotas on mailbox hierarchies. [Less]
The eXo Platform combines several modules to build a powerful enterprise portal. It includes a content management system, a portlet container, a portal, hot deployable services, a portlet framework, a customization tool, a workflow service, enhanced communication tools, and a bunch of bundled portlets.
Simple Email sending library