Crossfont: Easy-to-use font editor for Mac

Comes with a lot of vector tools to guide you throught the process of glyphs design, they are easy to get started with. Kerning View to help you do more accurate glyphs design, all you need is entering some text you want to kern, and then click on the text to choose two glyphs, and then set a kerning value. By default, you can see all unicode glyphs, and also can customize your basic glyphs in the glyph list view.

Source: www.pixelegg.me