Crossfont - Easy-to-use font editor for Mac
Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
BitFontMaker2™ - Fast and easy Online Bitmap font Editor.
Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
FontForge - Free (libre) font editor for Windows, Mac OS X and GNU+Linux
Userflows - Automatically generate user journeys