10 Minute Mail - Temporary disposable e-mail service to beat spam. Avoid spam with a free secure e-mail address.

Talkus - Chat with your website users from Slack

Hamster Pad - A social network built on top of Slack

Chatlio - When you have a business to run, your average instant messaging software just will not do. You need an internal presence upon which your entire team can collaborate on. Read more about Chatlio.

Kaboom by Hotspot Shield - Share messages & photos that disappear on any social network

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.