Google App Engine enables you to build and host web apps on the same systems that power Google applications. App Engine offers fast development and deployment; simple administration, with no need to worry about hardware, patches or backups; and effortless scalability.
Link: code.google.com
The Page Speed family consists of several products. Web developers can use the Page Speed browser extension to analyze performance issues while developing web pages. Apache web hosters can use mod_pagespeed, a module for the Apache™ HTTP Server that automatically optimizes web pages and their resources at serving time.
Page Speed OnlineNew! is a web-based tool that allows users to analyze pages at any time, in any browser, without downloading an extension. It also features Page Speed Mobile analysis, which lets developers analyze their site as viewed by a mobile browser, and get suggestions specific to mobile optimization.
The Page Speed browser extensions, available for Chrome and Firefox, are the fastest way to get accurate performance analysis of your web pages. It is also our prefered environment for introducing new performance best practices. With the Page Speed browser extension, you can analyze the performance of your pages and get specific suggestions on how to optimize them.
Link: code.google.com