Language bindings

PROJ.4 bindings are available for a number of different development platforms.

Python

pyproj: Python interface (wrapper for PROJ.4)

Ruby

proj4rb: Bindings for PROJ.4 in ruby

TCL

proj4tcl: Bindings for PROJ.4 in tcl (critcl source)

MySQL

fProj4: Bindings for PROJ.4 in MySQL

Excel

proj.xll: Excel add-in for PROJ.4 map projections

Visual Basic

PROJ.4 VB Wrappers: By Eric G. Miller.