ALL TOOLS

Complete, modular and scalable SIP server, includes a push gateway, to deliver SIP incoming calls or text messages on mobile device platforms where push notifications are required to receive information when the app is not active in the foreground

Web interface for multi-platform voice switch called FreeSWITCH

Lightweight SIP proxy, location server, and registrar for a reliable and scalable SIP infrastructure.

See, solve, and secure every VoIP call.

Monitor, troubleshoot, and analyze every VoIP call with clarity.

Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API

Transit class4 softswitch(SBC) with integrated billing and routing engine and REST API.

Federated microblogging server with Mastodon, GNU social, and ActivityPub compatibility

Knowledge-based community software. You can use it to quickly build your Q&A community for product technical support, customer support, user communication, and more

SMTP (email) server with a focus on simplicity, security, and ease of operation

Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based calendaring and scheduling services

A small and easy to configure SMTP and POP3 server for Windows and Linux.

Fast, highly extensible, and event driven SMTP server

Browse, search, and participate in GNU Mailman 3 web archives

Manage electronic mail discussion and e-newsletter lists

Newsletter and email marketing with advanced management of subscribers, bounces, and plugins

The web interface for GNU Mailman.

GPG-enabled mailing list manager with resending-capabilities

Sympa manages email lists for communities and organizations

Email feeds and web subscriptions in one unified inbox