Sites for finding alternatives for some specific software.

Below is the site for finding alternative applications for an application. e.g. LMMS is opensource alternative for FruityLoops ( music composition software ). I love lmms ;-)

link: http://alternativeto.net/

another good page: http://www.osalt.com/

A very good collection of GIMP tutorials.

I found this page while searching for gimp tutorials, this page contains many of tutorials you will find by googling.

http://tutorialblog.org/gimp-tutorials/

this one is also good.
http://www.tutorialhero.com/view-67-gimp_tutorials.php

Lots of Linux, OpenSource, games

I was looking for some gimp tutorials and via pics i found this great Linux game collection site, this is a must visit for people demanding games on Linux distros. Below is the link:

http://www.playdeb.net/

Lots of Linux Links

Lots of linux links, for every Linux lover / user this link is one of must visit. ;-)

http://www.linuxlinks.com/

http://loll.sourceforge.net/linux/links/Audio-Video/index.html

Portable Linux applications.

After using Winpenpack, portableapps for winows i was trying to build my own collection of portable apps for Linux, but good news is that some people have already done that for us all. ;-)

Below is the link of the site where you can download Linux Portable apps.

http://portablelinuxapps.org/

If you are trying to make portable builds then you can do it by setting LD_LIBRARY_PATH to your apps dirwctory and then launching it via shell script. I have created a script which copies all the dependencies into your application's directory so that you build that a portable suit. You can find some important scripts in Linux label ( look right list of labels ).  

A good article on 2D rotated rectangle collisions.

This article is simple, short and easy. Below is the link for the tutorial.

Tutorial - 2D Rotated Rectangles Collision Detection
http://www.ragestorm.net/tutorial?id=22


But in case you don't want to use rotated collision, what i do, is to treat rotated rectangles as a 4 points polygons and do the simple point in polygon Or polygon-polygon test.