BBTether is a free application allows you tether BlackBerry Pearl,Bold,Tour 9630,Storm to Mac OSX,Linux and Windows.BBTether is a open-source software for using your Blackberry on alternative OS’es (Linux, OSX.) BBTether is also known as Berry4all. it has been tested on some OS’s:
* Linux: Debian, Ubuntu, Mint, Fedora
* OS X: Tiger (PPC & x86), Leopard..
it supports network include t-mobile, verizon, Rogers, sprint, Bell mobility, Orange etc. and it supports BlackBerry pearl 8100, curve 8900, Bold 9000,Storm 9500, and Tour 9630,etc. you can download free BBTether application for your BlackBerry from http://www.berry4all.com/home