Browse free open source C Email Clients and projects below. Use the toggles on the left to filter open source C Email Clients by OS, license, language, programming language, and project status.

  • Open source. Easy to use. Proven. Complete. Icon
    Open source. Easy to use. Proven. Complete.

    End to end big data that enables you to spend less time formatting data and more time analyzing it.

    Discover HPCC Systems - the truly open source big data solution that allows you to quickly process, analyze and understand large data sets, even data stored in massive, mixed-schema data lakes. Designed by data scientists, HPCC systems is a complete integrated solution from data ingestion and data processing to data delivery. The free online introductory courses and a robust developer community allow you to get started quickly.
  • Field Service Management Software | BlueFolder Icon
    Field Service Management Software | BlueFolder

    Maximize technician productivity with intuitive field service software

    Track all your service data in one easy-to-use system, enabling your team to move faster and generate more revenue for your bottom line.
  • 1
    Heirloom mailx (formerly known as "nail") is intended provide the functionality of the POSIX mailx command with additional support for MIME messages, IMAP (including caching), POP3, SMTP, S/MIME, message threading/sorting, scoring, and filtering.
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    Downloads: 8 This Week
    Last Update:
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  • 2
    Draconis is a suite with several Internet Programs for the ATARI platform. It contains clients and drivers for a sucessful internet access.
    Downloads: 6 This Week
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  • 3
    RFC 2425 defines a MIME Content-Type for Directory Information. This library contains necessary methods to parse information blocks arranged in such a manner.
    Downloads: 5 This Week
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  • 4
    Claws Mail
    Claws Mail is a GTK+ based, lightweight, and fast e-mail client and newsreader. Supports POP3, APOP, IMAP, SMTP, SMTP AUTH, NNTP, LDAP, multiple accounts, spell-checking, addressbook, SSL, GPG, filtering, i18n, & more. It is further extended by plugins.
    Downloads: 2 This Week
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  • Claims Processing solution for healthcare practitioners. Icon
    Claims Processing solution for healthcare practitioners.

    Very easy to use for medical, dental and therapy offices.

    Speedy Claims became the top CMS-1500 Software by providing the best customer service imaginable to our thousands of clients all over America. Medical billing isn't the kind of thing most people get excited about - it is just a tedious task you have to do. But while it will never be a fun task, it doesn't have to be as difficult or time consumimg as it is now. With Speedy Claims CMS-1500 software you can get the job done quickly and easily, allowing you to focus on the things you love about your job, like helping patients. With a simple interface, powerful features to eliminate repetitive work, and unrivaled customer support, it's simply the best HCFA 1500 software available on the market. A powerful built-in error checking helps ensure your HCFA 1500 form is complete and correctly filled out, preventing CMS-1500 claims from being denied.
  • 5
    Note! Code and issues are maintained at https://github.com/sba1/simplemail. SimpleMail is a simple to use but powerful mail client. It supports the SMTP, POP3 and IMAP (in a simple form) protocols. Furthermore, among much other features, it is capable of showing HTML mails and can identify spam mails by using a Bayesian filter.
    Downloads: 2 This Week
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  • 6
    plutoemail

    plutoemail

    Email reader for RISC OS operating system.

    Pluto is an email and newsgroup reader for the RISC OS operating system (see https://www.riscosopen.org/), developed by Jonathan Duddington from 1997 to 2004. It stores emails and news articles in Boxes, and they can be Listed, Viewed, Written, Spell checked, Replied to, Searched and even Spoken out loud! After Pluto was released under GPLv3 here on SourceForge in 2013, it has had many improvements. Pluto runs on any version of RISC OS later than v3.10, including RISC OS 5 computers such as the Raspberry Pi, BeagleBoard, IGEPv5, Iyonix, PandaBoard, Wandboard, PineA64 and Titanium as well as the older Risc PC and Archimedes series. From v3.16 onwards the RISC OS version of eSpeak is not included in the Pluto download, but separately in the Files espeak directory. The espeak project itself is on https://espeak.sourceforge.net/ but seems currently dormant. For full details of all updates since v3.06b, please see the Pluto Web Site on http://www.avisoft.f9.co.uk/pluto/
    Downloads: 2 This Week
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  • 7
    This is a Web Mail application written in C. This uses its own users/mailbox system and it allows remote users to create accounts from a WEB form. The accounts are not valid users on the Unix system. It works like a Hotmail or Yahoo service.
    Downloads: 1 This Week
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  • 8
    oserp - stands for OpenSource Emailer Replaces Pine. First goal - replace pine with an open souce work-alike using perl. Second - add an SQL backend to Mail::Box, and thus to oserp. Third - Port to C++, using GNU MailUtils as the backend.
    Downloads: 1 This Week
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  • 9
    This simple mail client is for my BSD-sockets studies only, it should read mail in console and connect to servers using POP3 protocol.
    Downloads: 1 This Week
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  • Eptura Workplace Software Icon
    Eptura Workplace Software

    From desk booking and visitor management, to space planning and office utilization data, Eptura Workplace helps your entire organization work smarter.

    With the world of work changed forever, it’s essential to manage your workplace and assets together to effectively create a high-performing environment. The Eptura experience combines the power of workplace management software with asset management, enabling you to effectively operate your building and facilitate hybrid work.
  • 10
    Veldfire is a frontend to the Riverdrums C library, and is aimed at simplifying email functionality. The project provides interfaces to sending email, attaching files and sending mail to lists.
    Downloads: 1 This Week
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  • 11
    Virtual Access Open Source Project
    The Virtual Access Foundation's Virtual Access Open Source (VAOS) is a well-established win32 mail news and collaborative conferencing tool. Modified BSD license. Please go to our homepage http://www.virtual-access.org for more information and support.
    Downloads: 1 This Week
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  • 12
    Elmo is a feature-rich console mail client for UN*X power users. It integrates functionality commonly realised by separate pieces of software in other mailers.
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    Downloads: 1 This Week
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  • 13
    win32 native port of the Mutt mail client
    Downloads: 1 This Week
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  • 14
    The venerable MH message handling system: a command-line based mail user agent for UNIX/Linux developed at the RAND Corporation and the University of California, Irvine.
    Downloads: 1 This Week
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  • 15
    Webmail client for call center agents. Designed to efficiently manage and report on a large number of emails to a small number of email addresses. Specifically designed with webforms in mind where one email address may receive over 1000 emails per day.
    Downloads: 0 This Week
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  • 16
    After one year without development of the XForms based Unix email client XFMail, the coding has started again. The GTK is supposed to be the toolkit of choice and so we will take XFMail's core, restructure it, and port it to the Gimp ToolKit.
    Downloads: 0 This Week
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  • 17
    AUC for Education is an GPLed intranet system designed for use in a K-12 setting that provides a web-based environment for students and teachers to interact via "Interactive Classrooms" and other innovative features.
    Downloads: 0 This Week
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  • 18
    CSCMail is an X/Gtk based MUA. It supports the POP3 protocal and can also read mailspool files/directories. It supports multiple accounts, filters, GPG, MIME, Spellchecking, HTML Mail (view only) and a host of other features.
    Downloads: 0 This Week
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  • 19
    cross platform pop3/smtp and imap mail reader.
    Downloads: 0 This Week
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  • 20
    This program is a minimal SMTP client that takes an email message body and passes it on to a SMTP server (default is the MTA on the local host). Since it is completely self-supporting, it is especially suitable for use in restricted environments.
    Downloads: 0 This Week
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  • 21
    Edbrowse is a comprehensive editor, browser, and email client that provides access to the net through a command line interface, appropriate for speech or braille. It also supports scripting, to interact with the net in the background, or in batch mode.
    Downloads: 0 This Week
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  • 22
    Downloads: 0 This Week
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  • 23
    A PHP Webmail, utilizing persistant IMAP connections and XHTML 1.1. Since the name is rather long, the preferred nickname is "d-mail".
    Downloads: 0 This Week
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  • 24
    elmutt - mutt with elm features
    Downloads: 0 This Week
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  • 25
    Errors Hippo is a BBS offline-reader with support for the Hippo packet format. It features a messagebase and a (hopefully) easy-to-use interface.
    Downloads: 0 This Week
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