I think by this point, everyone has heard of Evernote. If you haven’t, I’d be very surprised.
I use Evernote religiously for keeping a collection of code snippets. Using the Clip to Evernote Chrome extension, I can take clippings from all over the internet and save them for later use.
It is also very easy to find them using the built in search. If you’re really an organized person, you can even tag them by language.
PNGGaultlet is a PNG optimizer for Windows that has a very easy to use interface. Select an output folder, select your images, click a button, and BAM. Your images have been optimized!
GZIP is a wonderful thing. It’s easy to turn on with most servers and it completely worth it. GZIP test is a web application that allows you to enter in a url and it will tell you if it is current being GZIPed. If it is, it will tell you how much it is being compressed (In bytes and %). If it isn’t currently being GZIPed, it will give you a chart of how much that page COULD be compressed if GZIP was turned on.
Meta Tag Analyzer
SEO is a very important thing to many people. One of the easiest way to boost your SEO score is by using effective keywords in your meta tags. Meta Tag Analyzer is a web application that allows you to enter in a url and it will generate a report and give you a score for your meta tags. It will give you a good insight into the words on your web page in contrast with your SEO keywords.
One of the simplest ways to speed up a website is to compress your files. CSS Compressor is a web application that allows you to copy/paste your CSS and it will spit out your css compressed with some stats on how much it was compressed by.
Packer (JS Compressor)