NationBuilder - The world's first platform for leaders, handcrafted from scratch to help you grow your community and lead them to action.
Mumble - Mumble is an open source, low-latency, high quality voice chat software primarily intended for use...
Intranet Quorum - Customer focus, innovation and purpose are built into everything we do. When millions of people are counting on you. You can count on us. Lockheed Martin. Your Mission is Ours.
Discord - Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.
BSD Tools - The EA Digital Tools are designed to help you manage (and grow) inspiring, impactful digital programs - from fundraising to advocacy, communications to analytics.
RaidCall - Free & Light. Setting up is fast and easy; with no need to rent or set up servers. Low CPU usage and minimum memory footprint allows for smooth, uninterrupted communication. im. Group Communication.