I had to match a font from a letterhead today and I came across a couple of great tools for the task.
First I found FontMatcher, a VB6 program that takes a BMP image and matches it to your TTF files. The catch is that you have to have the font already for it to find it. I didn’t so it didn’t match my font.
I finally found a great tool that searches their own online font database: What the Font. It even allows you to purchase the font after it finds it for you ;). Saved me a lot of time though – it’s worth it.