145w ago - The first version of an open source toolchain for PS3 is available today courtesy of ooPo, meaning a possibility to create PlayStation 3 hombrew without requiring the Sony SDK.

Download: Open Source PS3 Toolchain

From the included ReadMe file:

What does this do?

This program will automatically build and install a compiler and other tools used in the creation of homebrew software for the Sony PlayStation 3 videogame system.

How do I use it?

1) Set up your environment by installing the following software:

autoconf, automake, bison, flex, gcc, make, makeinfo, patch, subversion, wget

2) Add the following to your login script:

export PS3DEV=/usr/local/ps3dev
export PATH=$PATH:$PS3DEV/bin
export PATH=$PATH:$PS3DEV/ppu/bin
export PATH=$PATH:$PS3DEV/spu/bin

3) Run the toolchain script:

./toolchain.sh

Where do I go from here?

Visit the following sites to learn more:

http://www.ps2dev.org
http://forums.ps2dev.org