Best Open Source Mac Post-Office Software 2025

Post-Office Software for Mac

Post-Office Mac Bulgarian Clear Filters

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.

Level Up Your Cyber Defense with External Threat Management
See every risk before it hits. From exposed data to dark web chatter. All in one unified view.

Move beyond alerts. Gain full visibility, context, and control over your external attack surface to stay ahead of every threat.

Try for Free
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
1

Hastymail

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

2 Reviews

Downloads: 2 This Week

Last Update: 2013-12-31
See Project
2

Customer Touch CRM

CRM aka Customer Relationship Management are applications that manage customers in relation to enterprise life. Our project, Customer Touch CRM, is a CRM application for small/medium firms. The application is easy to use and install.

Downloads: 0 This Week

Last Update: 2016-09-20
See Project
3

Mailster

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: 0 This Week

Last Update: 2013-04-11
See Project
4

dBrowser-PHP/MySQL/PostgreSQL Framework

dBrowser is a PHP/MySQL/PostgreSQL framework/code generator aimed at web/database application developers.

Downloads: 0 This Week

Last Update: 2015-08-03
See Project
MongoDB Atlas runs apps anywhere
Deploy in 115+ regions with the modern database for every enterprise.

MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.

Start Free