Engage - Engage is a PowerPoint add-in that lets people of any skill level create and automate visually impressive presentations with infographics, pictograms and data maps.
Pushbullet - Pushbullet - Your devices working better together
Ko-fi - Ko-fi offers a friendly way for content creators to get paid for their work.
Pushover - Real-time notifications on your Android, iPhone, iPad, and Desktop
DonatePal - The new way to donate to charities
Gotify - a simple self-hosted server for sending and receiving messages