I'm using Pingdom (free version) to monitor one of my sites. All I need is to have instant notifications (any way -- e-mail / SMS / mobile app), when any of my sites goes down, in addition to a simple monthly report on site performance. An optional way to publish this information as a simple graph / site-is-online indicator would be perfect.
Pingdom seemed perfect for this task when I started to use it around year ago. But now it has matured way beyond my expectations. All these alert scenarios, reports, RUMs, users, tabs, switches, etc. are simply an overkill for me and for the task I need it to perform.
Can someone suggest any alternative software or service for simple site monitoring that would offer the things I described and not much more than that? A service that wouldn't be an overkill, which Pingdom has recently become in my opinion.