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Performance Testing Software

WebPageTest

WebPageTest pricing: FREE
Website speed testing with multiple test locations on IE and Chrome, multi-step transaction testing, video capturing and content blocking
Operating System:
Web

YSlow

YSlow pricing: FREE
Website performance testing based on Yahoo rulesets with suggestions to improve page performance, and integration with Smush.it and JSLint
Operating System:
Web
Browser Extension:
Chrome Firefox Safari Opera

GTmetrix

GTmetrix pricing: $ $ $$ = $29 or less
$ $ = $30-$59
$ $ $ = $60 or more
(for lowest plan)
Website performance testing with page load time, total page size, total number of requests, page monitoring, annotations, PageSpeed and YSlow score alerts, video recording of page load and multi-region testing
Operating System:
Web

Pingdom

Pingdom pricing: $ $ $$ = $29 or less
$ $ = $30-$59
$ $ $ = $60 or more
(for lowest plan)
Website performance testing with uptime monitoring, multiple test locations, root cause analysis, performance grades, transaction monitoring, error alerts, and 3rd party app integration

PageSpeed

PageSpeed pricing: FREE
Tests webpage speed and user experience with Module to automatically optimize site and optimization library integration
Operating System:
Web

Web performance tools to help you test the speed, mobility and code optimization of your web projects post production

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