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Claimed by NGINX, Inc. Analyzed 24 days ago

NGINX [Engine-X] is an HTTP(S) server, HTTP(S) reverse proxy and IMAP/POP3 proxy server written by Igor Sysoev. It has been running on many heavily loaded sites, including Facebook, Zappos, Groupon, LivingSocial, Hulu, TechCrunch, Dropbox, Tumblr and WordPress.

192K lines of code

22 current contributors

27 days since last commit

856 users on Open Hub

High Activity
I Use This



  Analyzed 17 days ago

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.

223K lines of code

1 current contributors

about 2 months since last commit

760 users on Open Hub

Very Low Activity
I Use This



  Analyzed 24 days ago

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 information in menus (and in fact, ELM users will ... [More] 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]

102K lines of code

25 current contributors

25 days since last commit

472 users on Open Hub

Moderate Activity
I Use This



  Analyzed 10 days ago

Evolution provides integrated mail, addressbook and calendaring functionality to users of freedesktop.org compliant desktop environments.

1.01M lines of code

87 current contributors

10 days since last commit

275 users on Open Hub

High Activity
I Use This



  Analyzed 9 days ago

Dovecot is an open source IMAP and POP3 server for Linux/UNIX-like systems, written with security primarily in mind.

405K lines of code

26 current contributors

8 months since last commit

257 users on Open Hub

Very High Activity
I Use This
Licenses: BSD-3-Clause, LGPL-2.1, MIT



Claimed by KDE Analyzed 5 months ago

The KDE Kontact Personal Information Management suite unites mature and proven KDE applications under one roof. Thanks to the powerful KParts technology, existing applications are seamlessly integrated into one. The components of KDE Kontact are tailored to work well with each other. This results ... [More] in features like intuitive drag-and-drop between appointment handling, task lists and contacts. KDE Kontact supports various groupware servers. When using these servers your workgroup has access to features like shared email folders, group task lists, calendar sharing, central addressbooks and meeting scheduling. [Less]

239K lines of code

10 current contributors

over 1 year since last commit

151 users on Open Hub

Activity Not Available
I Use This



  Analyzed 10 days ago

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.

123K lines of code

11 current contributors

10 days since last commit

102 users on Open Hub

High Activity
I Use This



  Analyzed over 2 years ago

Fetchmail is a full-featured, robust, well-documented remote-mail retrieval and forwarding utility intended to be used over on-demand or permanent dynamic-address TCP/IP links (such as SLIP or PPP connections). It supports every remote-mail protocol now in use on the Internet: POP3, IMAP4r1, ETRN ... [More] , and ODMR, all with various authentication variants, and TLS/SSL security with certificate verification. Fetchmail retrieves mail from remote mail servers and forwards it via SMTP, LMTP, or to a local delivery agent. Mail can then be read by normal mail software such as mutt or alpine. This setup allows all your system MTA's filtering, forwarding, and aliasing facilities to work just as they would on normal mail. [Less]

32.4K lines of code

1 current contributors

about 3 years since last commit

97 users on Open Hub

Activity Not Available
I Use This



  No analysis available

Sendmail is a remarkably flexible program, supporting many kinds of mail transfer and delivery including the overwhelmingly popular SMTP.

0 lines of code

0 current contributors

0 since last commit

95 users on Open Hub

Activity Not Available
I Use This
Mostly written in language not available
Licenses: sendmail



  Analyzed over 1 year ago

Gnus is a mail- and news-reader that is incorporated into GNU Emacs. Gnus is independently developed, and is frequently merged into GNU Emacs.

128K lines of code

24 current contributors

almost 2 years since last commit

81 users on Open Hub

Activity Not Available
I Use This