What are some alternatives?
When comparing My Script Font and Fontself Maker for Photoshop, you can also consider the following products
FontForge - Free (libre) font editor for Windows, Mac OS X and GNU+Linux
Type Anything - Test & create the perfect typography setup for your website
FontLab VI - font creation and editing, including variable fonts and color fonts
Webfont - Easily create and maintain custom SVG icon fonts
FontStruct - FontStruct. Build, Share, Download Fonts
Song Writer Fonts - Write in the style of your favorite song writers