FontForge - Free (libre) font editor for Windows, Mac OS X and GNU+Linux
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Glyphs - Make everything from dingbat webfonts to full-fledged text typefaces in the most Mac-like font...
GIMP - GIMP is a multiplatform photo manipulation tool.
BirdFont - Birdfont is a free font editor which lets you create vector graphics and export TTF, OTF, EOT and...
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.