We sometimes try to understand the font used in images / logos and we don’t have the source files.
What The Font is a free service by MyFonts which lets you upload an image, scans a large font database and gives you the font name as a result.

Even if you searched your font in What The Font and couldn’t find the font, you can still post the image in What The Font forum to ask help from the community.
When designing a website, it is generally hard to decide which font(s) to use. Also, it is hard to compare which font looks better as, normally, we can test 1 font at a time.
Typetester is web based font comparison service which you can compare the mostly available fonts - 3 at a time -, colors, backgrounds, sizes, alignments & more. In many cases, Typetester makes the life of a web designer easier. Give it a try!

With over more than 8000 freeware fonts, urbanfonts is one the best places to download them.
With a simple to use interface, you can sort the fonts by letter or category and see the font samples. Specially, category sorting is a nice feature when searching inside 8000+ fonts. Choose 3D fonts, funny fonts or retro fonts and get them!
There are also many free dingbats too.
