What are some alternatives?
When comparing Llama and Workflow, you can also consider the following products
Automate - Automate various tasks on your Android smartphone or tablet.
Tasker - Tasker is an application for Android which performs Tasks (sets of Actions) based on Contexts...
Locale - Locale helps content owners and translators work together, so Rails developers are free to write more code
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
AutomateIt - Automate Your Android!
MacroDroid - MacroDroid - Automation for your Android Device