Best Open Source Email Software 2026

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

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.

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Build innovative business apps powered by process automation
Connect workflows, teams and systems within one digital business transformation platform

Manage your business as a unified system of interacting processes. Use BPMN 2.0 for low-code process modeling by business people. Follow your strategic goals with process architecture that always corresponds to the structure of an actual business.

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1

MySXP Client terminal COM ActiveX

MySXP Client: Is an ActiveX COM Microsoft Windows platform; The objective of this Component is to create a terminal service for a wide open server services as, IM, RPC for client app., RPC, DB terminal, Multiplayer Game client, WebCam, voIP Client.

Downloads: 0 This Week

Last Update: 2013-03-13
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2

OpenMMOd

OpenMMOd is a open-source event-driven MMORPG Server written in C++ with a YAML packet definition backend. It is MySQL database driven currently with future backend support to come in the future.

Downloads: 0 This Week

Last Update: 2013-04-22
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3

SIMpad

SIMpad by Siemens is a multimedia device with a screen resolution of 800x600x16 and is based on StrongARM processor SA1110 . The goal of this project is to provide a full Linux operating system with kernel and applications.

Downloads: 0 This Week

Last Update: 2016-05-22
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4

Shut the Box

Shut the Box is a simple diversion written in C and GTK+. The object is simple: Roll the dice and click the tiles that sum up to that dice roll until there are no more tiles to click.

Downloads: 0 This Week

Last Update: 2013-12-31
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Cloudbrink Personal SASE service
For companies looking for low maintenance, secure, high performance connectivity for hybrid and remote workers

Cloudbrink’s Personal SASE is a high-performance connectivity and security service that delivers a lightning-fast, in-office experience to the modern hybrid workforce anywhere. Combining high-performance ZTNA with Automated Moving Target Defense (AMTD), and Personal SD-WAN all connections are ultra-secure.

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