What are some alternatives?
SpeedCurve - Monitor your front-end. Beat the competition
NewRelic - New Relic is a Software Analytics company that makes sense of billions of metrics across millions of apps. We help the people who build modern software understand the stories their data is trying to tell them.
Lighthouse - Collaborate effortlessly on projects. Whether you’re a team of 5 or studio of 50, Lighthouse will help you keep track of your project development with ease.
GTmetrix - GTmetrix is a free tool that analyzes your page's speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.
WebPagetest - Run a free website speed test from multiple locations around the globe using real browsers...
AppDynamics - Get real-time insight from your apps using Application Performance Management—how they’re being used, how they’re performing, where they need help.