- Ajax and Flex Data Loading Benchmarks: From James Ward, RIA Cowboy using his own Census tool.
- A Study of Ajax Performance Issues: Coach Wei uses the jsLex profiling tool to put the entire Ajax stack through its paces.
- General Browser Load-Time Test: The first in an entire suite of browser tests from the Non-Troppo site.
- Double-Dollar Speed Test: An interactive suite that tests the selector functions of various big Ajax libraries.
- Computer Language Benchmarks Game: A clever, snarky "game" in which various language implementations can be tested against one another.
- i-Bench: The now-discontinued benchmark suite used by PC Magazine can still be downloaded in its archival edition.
- Adding DOM elements to document: A benchmark from the Wildbit folks.
- Scoot Benchmarks: A test suite of indeterminate provenance.
- Mesh transform: A math-heavy pure JS test from the Webkit site, which also maintains its own benchmark links page.
- Bits In Byte Function Compare: More math-heavy tests.
- DOM Core Performance: Appending, Prepending, Inserting, Indexing, Removing: A suite whose title says it all.
- JS/Bench 1.1: Some older test suites from ComputerBytesMan.com.
- Benchmark - W3C DOM vs. innerHTML: PPK from QuirksMode's older but useful DHTML benchmark. QuirksMode also maintains a page listing additional historical benchmarks, some of which are now defunct.
- Wired News Benchmarks Show Safari 3 Is Slower Than IE 7, Firefox
- Performance Tests for Opera 9.5
- Benchmarking in your pants: More iPhone benchmarks.
Given last year's flap between Apple and Opera over Safari's benchmark claims and all the work Mozilla is putting into optimizing Firefox 3, it seems certain that performance will remain an important battle line amongst the big browser vendors. Despite the plethora of test suites above, I'm sure there are more to come.