1. T1lib is a library for generating character and string-glyphs from Adobe Type 1 fonts under UNIX. T1lib uses most of the code of the X11 rasterizer donated by IBM to the X11-project. But some disadvantages of the rasterizer being included in X11 have been eliminated. T1lib also includes a support for antialiasing. From Mandrake 9.0 RPM

2. Type 1 font rasterizer library - runtime T1lib is an enhanced rasterizer for Type 1 fonts. T1lib is based on the X11R5 font rasterizer code, but operates independently of X11. It includes many enhancements, including underlining, antialiasing, user-defined slant and extension factors, and rotation. This package contains the shared libraries needed to run programs using T1lib. From Debian 3.0r0 APT