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.
AFDKO - AFDKO is a collection of command-line tools used at Adobe for manipulating and creating OpenType...
NexusFont - Choose and manage your fonts with Nexus Font.
Universal Type Server 6 - Universal Type Server 6 is a complete font management solution that is particularly designed for the largest workgroups and team environment.
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.