I've been using Monitis for uptime monitoring but they go bang next month because TeamViewer wanted to make customers angry and I need something else.
I'm looking for a service offering 1 minute HTTP checks (preferably with keyword validation) that can do alerts via email and SMS as a minimum, preferably by call too. I'd like as many regional monitoring nodes as possible, especially China.
Price doesn't matter if it does what I want. Any recommendations?