Slack - A messaging app for teams who see through the Earth!
GoPad for Schools - School Management
Mattermost - Mattermost is an open source alternative to Slack.
Sawyer - Discover a wonder-filled world of kids classes, camps, events, and activities, right in your neighborhood
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Yusp - Yusp is a next generation, real-time personalization engine having all product modules as defined by Gartner for various business models.