Mathway - Mathway is a freemium math solving app that helps you find the solutions to any math problem you can imagine.
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
Math.com - Math.
Mycroft.AI - Mycroft is the world’s first open source assistant.
Delta: Math helper - With Delta: Math helper, quickly solve any math problem with an algorithm. Save time checking your homework or studying for a test, it’s free!
Google Assistant - Get things done with Google Assistant