I'm using the libraries of Sean Barret [1] toSean Barret to render truetype-glyphs under OpenGL (stb_image, stb_truetype).
The Recast/Detour-project [2]Recast/Detour-project is using these libraries to create an user interface (IMUI, see [3])
[1] nothings.org [2] code.google.com/p/recastnavigation/source/browse/trunk/RecastDemo/Source/imguiRenderGL.cpp [3] www.mollyrocket.com/861IMUI)