Tasker - Tasker is an application for Android which performs Tasks (sets of Actions) based on Contexts...
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
Automate - Automate various tasks on your Android smartphone or tablet.
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.
MacroDroid - MacroDroid - Automation for your Android Device
Microsoft Flow - Similar to IFTTT and Zapier you can create automated tasks based on APIs from various services.