Loomio - Loomio helps groups of people make decisions together, online.
DemocracyOS - DemocracyOS is an open source application for online decision making.
tricider - Easy decision making. Creative and collaborative.
Airesis - A decision making tool for direct democracy and e-government: participate in discussions, bring your ideas, suggest solutions and vote online
LettuceMeet - The easiest way to schedule group meetings.
GlassFrog - GlassFrog is a software to support and advance your Holacracy practice.