http://ln.hixie.ch/?start=1037910467&count=1
http://ln.hixie.ch/?start=1137740632&count=1
http://software.hixie.ch/utilities/js/live-dom-viewer/
http://joehewitt.com/2006/03/26/firebug-03-preview
http://mothereffingtextshadow.com/
http://sassymothereffingtextshadow.com/
https://plus.google.com/113127438179392830442/posts/hbjf8AiuCpt
http://htmlemailboilerplate.com/
http://html5boilerplate.com/mobile
https://github.com/csnover/dojo-boilerplate
http://code.google.com/p/closure-stylesheets/
http://learnboost.github.com/stylus/
http://daringfireball.net/projects/markdown/
http://code.google.com/p/zen-coding/
https://github.com/jashkenas/coffee-script/wiki/List-of-languages-that-compile-to-JS
http://blog.rebeccamurphey.com/on-rolling-your-own
http://addyosmani.com/resources/toolschart/chart.pdf
http://zetafleet.com/i/4d75a4efc33d4.png
http://addyosmani.github.com/todomvc/
http://incident57.com/codekit/
http://addyosmani.com/blog/autosave-changes-chrome-dev-tools/
http://net.tutsplus.com/tutorials/tools-and-tips/sublime-text-2-tips-and-tricks/
http://net.tutsplus.com/tutorials/tools-and-tips/essential-textmate-shortcuts-tips-and-techniques/
http://aptana.com/products/studio3
http://www.jetbrains.com/webstorm/features/
http://code.google.com/chrome/devtools/
http://code.google.com/chrome/mobile/docs/debugging.html
http://code.google.com/closure/utilities/
http://code.google.com/p/closure-stylesheets/
http://pivotal.github.com/jasmine/
http://code.google.com/p/js-test-driver/
http://seleniumhq.org/projects/
https://plus.google.com/113127438179392830442/posts/Z1LpEhfKTqo
http://code.google.com/closure/compiler/
http://developer.yahoo.com/yui/compressor/
http://code.google.com/p/htmlcompressor/
http://www.codedread.com/scour/
http://optipng.sourceforge.net/
https://github.com/rflynn/imgmin
http://html5boilerplate.com/docs/Build-script/
https://github.com/tivac/web-build
Honestly, I'm shocked there was no mention of DocPad, as it streamlines the entire workflow/development-stack; covering boilerplate, authoring abstractions, iteration workflow, tuning, building & optimisation, and soon deploy as well. Allowing you to just focus on the actual problem you've set out to solve.