This must be one of my favourite sites at the moment – what the font. It allows you to upload an image that contains some text. The site then uses character recognition to match your text against a database of fonts and tells you which are the closest matches. It works well, particularly when the characters in the images are of a reasonable size.
I originally thought that that this would only be of limited use on an infrequent basis but I have found myself using it regularly. I have never made a note of the fonts used in images on my websites, so this has been a life saver.
Of course, like everyone else, what the font has to make a living and it does this by offering the fonts it has found up for sale but there are plenty of other sources for fonts should you not like the price, such as those from Softmaker.