Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.

Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.

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

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.

Facebook Messenger - Facebook Messenger is a faster way to message.

Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.