Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
LiveChat - LiveChat - premium live chat software. Approach customers directly on the website, make connections and drive more sales using LiveChat.
MIT App Inventor - App Inventor is a cloud-based tool, which means you can create apps for phones or tablets right in your web browser.
Olark - Real-time chat and monitoring of your website visitors through Google Talk and Jabber.
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.