Kerning Pairs Generator
This free builder tool is to help the font designers quickly generate kerning pairs and test all the letters, numbers, ligatures, and other glyphs more quickly and efficiently.
Stringmaker by Nina Stössinger
Cyreal is a collaborative platform that produces quality open-source fonts and offers drag and drop font testing web utility (based on Pablo Impallari’s project).
Impallari Testing Utility
Impallari Testing Utility is a web platform for drag and drop font testing.
iKern is the result of a research on autospacing and autokerning, or better computer aided type metrics generation, started in 2002. It can help produce highest quality spacing and kerning in short time. It’s also a service proposed as workflow optimization in typeface creation processes freeing resources for creativity.