PostPath

OPEN-XCHANGE

This company develops open-source email, collaboration, and DNS security software for internet service providers, telecommunications firms, and hosting companies.

Attassa

This company develops email collaboration and file-sharing add-ons for Microsoft Outlook to serve enterprise users.

JBoss

This company provides open-source Java application server software and middleware services to enterprise corporations for building and operating scalable web applications.

Azaleos

This company provides managed email, collaboration and unified communications services for businesses using Microsoft Exchange, SharePoint and Lync platforms.

InBoxer

This company provides email archiving, electronic discovery, and content monitoring software for schools and organisations requiring regulatory compliance and data leak prevention.

EnterpriseDB

This company provides open-source PostgreSQL database software and support services for enterprise organisations, government agencies and developers globally.

Return Path

This company develops email deliverability and optimisation software for marketers to ensure messages reach customer inboxes and improve campaign performance.

Mailtrack

The company develops email tracking software for individuals and businesses using Gmail and Outlook to monitor communication engagement and document interactions.