What are some alternatives?
When comparing FontStruct and SpeedCrunch, you can also consider the following products
FontForge - Free (libre) font editor for Windows, Mac OS X and GNU+Linux
Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.
BirdFont - Birdfont is a free font editor which lets you create vector graphics and export TTF, OTF, EOT and...
Numi - Numi Organic Tea is a premium, Fair Trade sustainable company specializing in unique and innovative blends of green, black, white, oolong teas, Pu-erh, rooibos, herbal and Flowering Tea™.
FontLab VI - font creation and editing, including variable fonts and color fonts
WolframAlpha - WolframAlpha brings expert-level knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels.