Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

NationBuilder - The world's first platform for leaders, handcrafted from scratch to help you grow your community and lead them to action.

Influitive - Influitive helps companies increase customer lifetime value and accelerate sales with the power of their own customer advocates. Inspire your customers to stay longer, share their experiences, and attract new business.

Mobilize - Mobilize is a scalable messaging app built for large groups.

Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.

vBulletin - Build a community website with the leading forum software, vBulletin 5 Connect, or in the cloud on vB Cloud!