Vectr - Free vector graphics editor. A simple yet powerful web and desktop cross-platform tool for everyone.
FontForge - Free (libre) font editor for Windows, Mac OS X and GNU+Linux
Linotype FontExplorer X Pro - Linotype FontExplorer X Pro is a font manager for the Mac and Windows operating systems that is integrated with an online store that allows you browse through fonts you are looking to buy.
Microsoft Typography - Internal tools developed at Microsoft for manipulating and creating OpenType and TrueType font...
Connect Fonts Powered By Suitcase - A flexible font manager that uplevels the classic desktop application with intuitive search, pairing suggestions, and remote access in the cloud to keep you inspired, no matter where you are.
Apple Font Tool Suite - A suite of tools for working with font files.