Multivariate testing - Google Website Optimizer & Other tools

Here i am giving some tools for Multivariate testing

Omniture Test&Target
Optimost
Maxymiser
Vertster
Split Test Accelerator
KaizenTrack
SiteSpect
Widemile
Memetrics

Check your website using different browsers and screen resolutions

Check your website using different browsers and screen resolutions using below tools

http://www.browsercam.com/Default2.aspx

http://browsershots.org/

website load time checking tool

are looking for minimize website download time here i am giving one good tool use this and minimize load time

http://www.octagate.com/service/SiteTimer/