Right now the landscape is split between startups providing the service and jquery/bootstrap plugins. The startup offerings don't work for us since we're insid

Right now the landscape is split between startups providing the service and jquery/bootstrap plugins. The startup offerings don't work for us since we're inside of Gmail which presents a unique technical challenge in regards to loading javascript, etc. The libraries have the issue of things being "hard coded" meaning it becomes too difficult and annoying to make lots of tour variations, or do A/B testing.