Best Open Source Post-Office Software 2026

Post-Office Software

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

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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
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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
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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
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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
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