Browse free open source Post-Office software and projects for Mac below. Use the toggles on the left to filter open source Post-Office software by OS, license, language, programming language, and project status.

  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
    Sign up for free
  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
    Start Free
  • 1
    YPOPs! is an application which emulates a POP3/SMTP mail server and provides free POP3 and SMTP access to Yahoo! Mail. It does not depend on Yahoo's POP3/SMTP mail server. You can use a mail client of your choice!
    Downloads: 3 This Week
    Last Update:
    See Project
  • 2
    PyWebMail is a Python library and POP3 gateway that enable working with WebMail servers like with POP3 or IMAP mail server. Currently Mail.Com, Yahoo! Mail, Gmail, Netscape.Net, HotMail and some minor servers support is finished.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 3
    Mailster is a project aimed at testing software mail capabilities. It provides a mail server container to test emails sent by your apps without rewriting your application code.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 4
    Java based mailserver providing a SMTP and POP3 protocoll implementation easy configurable, OS independent, extendible
    Downloads: 1 This Week
    Last Update:
    See Project
  • The All-in-One Commerce Platform for Businesses - Shopify Icon
    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
    Learn More
  • 5
    Foedus Mail is a mail server written in Java. The goal is to produce stable IMAP, SMTP, and POP3 support and then to build upon and refine it.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    Hedwig Mail server
    Hedwig is an open source IMAP, SMTP, POP3 server written in Java, designed with ease of installation and configuration in mind. Hedwig enables storage of mail message headers in a relational database(MySQL or Oracle) and mail messages in a file system. Visit http://hwmail.sourceforge.net/ for more information.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    Ichabod is an SMTP/POP3 server, with mailing list support. Administration is via a web, or email You can also use Ichabod to make your app receive email as an SMTP server. You can also easily extend it by subclassing to add your own behaviors.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    A lightweight Java-based mail server with IMAP/Web/Mobile access and incredible classification
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    Welcome to the project page of the Open JMail Server - a scalable Java email server. Features POP, SMTP, IMAP, dynamic pluggable storage design, modular protocol handling, easy XML configuration and much more.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Enterprise and Small Business CRM Solution | Clear C2 C2CRM Icon
    Enterprise and Small Business CRM Solution | Clear C2 C2CRM

    Voted Best CRM System with Top Ranked Customer Support. CRM Management includes Sales, Marketing, Relationship Management, and Help Desk.

    C2CRM consists of four modules that integrate to provide a comprehensive CRM solution: Relationship Management, Sales Automation, Marketing Automation, and Customer Service. Only buy what each user needs.
    Learn More
  • 10
    Browsing your mail on mail server, And deleting mails without downloading.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    ProGatherer is an SMTP/POP3/IMAP E-Mail Server written in Java for Windows/Linux/MacOS.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    A small, fast, secure, anti-spam SMTP mail server (MTA). Delivery to mbox files and Maildirs supported. qwik-smtpd supports RBL, relay checking, raw/custom message handlers, and more. Custom authentication via checkpassword and a qmail-compatible configu
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    SIMON is a very simple MTA and POP3 implementation. It is completely designed from the ground up and is useful for departmental or small to medium sized companies.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Vaza-Mail Server is open source mail server which provides SMTP and POP3 server implemented in 100% Pure Java. It is a pure Java Implementation using J2EE.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15

    jamesui

    An unofficial web console to administer Apache James 3 server

    MOVED TO: https://github.com/fulvio999/jamesui Jamesui is an unofficial web interface to manage and monitor Apache James 3 mail server. It is written in Java and run inside Apache Tomcat.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    mailgate is a set of Python scripts we used at my former company to transfer email a) from a POP3 account to our internal mail server, b) from a POP3 account to a mailbox file and c) from a mailbox file to a SMTP server.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • Next