Language bindings

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

Python

pyproj: Python interface (wrapper for PROJ)

Ruby

proj4rb: Bindings for PROJ in ruby

TCL

proj4tcl: Bindings for PROJ in tcl (critcl source)

MySQL

fProj4: Bindings for PROJ in MySQL

Excel

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

Visual Basic

PROJ VB Wrappers: By Eric G. Miller.

Fortran

Fortran-Proj: Bindings for PROJ in Fortran (By João Macedo @likeno)