1. Download and install Python 2.6 from Here (http://www.python.org/download/). for your appropriate windows (32 or 64 bit)
2. Download & Install wxPython (NOT wxWidgets) from Here. (http://www.wxpython.org/download.php)
3. Download & Install SPE from Here(http://developer.berlios.de/project/showfiles.php?group_id=4161). Get this file: “SPE-0.8.4.c-wx2.6.1.0-no_setup.zip”.
4. Unzip it to somewhere you will remember, but don’t rename the folder anything other than “_spe”.
5. Go inside the _spe directory and double click SPE.py.
6. At this point your  new SPE Python IDE should start up. Enjoy Python….

Note: you will have to set the environmental veritable in windows for python. For Xp user,

Right click on MyComputer=>Properties=>Advanced=>Environmental Variable

and then select “Path” and click edit, add the python directory (c:\Python26)

followed by a semi colon at the end of the variable Value.(eg- xxxxxx;C:\Python26)

Download Link : https://www.redhat.com/apps/download/

2. Fedora
Fedora is a Linux-based operating system that showcases the latest in free and open source software. Fedora is always free for anyone to use, modify, and distribute. It is built by people across the globe who work together as a community: the Fedora Project. The Fedora Project is open and anyone is welcome to join.

Download Link : http://fedoraproject.org/get-fedora

3. Debian
The Debian Project is an association of individuals who have made common cause to create a free operating system. This operating system that we have created is called Debian GNU/Linux, or simply Debian for short.

Download Link : http://www.debian.org/distrib/

4. Open SUSE
The openSUSE project is a community program sponsored by Novell. Promoting the use of Linux everywhere, openSUSE.org provides free, easy access to the world’s most usable Linux distribution, openSUSE. The openSUSE project gives Linux developers and enthusiasts everything they need to get started with Linux.

Download Link : http://en.opensuse.org/Download

5. Mandriva
Mandriva Linux One 2008 is the best way to start using Linux. A full Linux operating system on a single CD for both new and experienced Linux users, it is fast to download and install, and also safe to try with a live mode. One is really the one CD you need!

Download Link : http://www.mandriva.com/en/download

6. Slackware
Slackware is a Linux distribution created by Patrick Volkerding of Slackware Linux, Inc. Slackware was one of the earliest distributions, and is the oldest currently being maintained. Slackware aims for design stability and simplicity, and aims to be the most UNIX-like Linux distribution.

Download Link : http://www.slackware.com/getslack/

7. Knoppix
Knoppix, or KNOPPIX, is a Linux distribution based on Debian GNU/Linux designed to be run directly from a CD / DVD. Knoppix is one of the best-known live CDs. Knoppix was developed by Linux consultant Klaus Knopper. When starting a program it is loaded from the optical disc and decompressed into a RAM drive. The decompression is transparent and on-the-fly.

Although Knoppix is primarily designed to be used as a live CD, it can also be installed on a hard disk like a typical operating system. Computers that support booting from USB devices can load Knoppix from a live USB flash drive or memory card.

There are two main editions of Knoppix: the traditional Compact Disc (700 megabytes) edition and the DVD (4.7 gigabytes) “Maxi” edition. Each of these main editions have two language-specific editions: English and German.

Knoppix mostly consists of free software, but also includes proprietary software.

Download Link : http://www.knopper.net/knoppix-mirrors/index-en.html

8. Ubuntu
Ubuntu  is a predominantly desktop-oriented Linux distribution, based on Debian GNU/Linux but with a stronger focus on usability, regular releases, and ease of installation at the expense of platform diversity. Ubuntu is sponsored by Canonical Ltd, owned by South African entrepreneur Mark Shuttleworth.

The name of the distribution comes from the southern African concept of ubuntu which may be rendered roughly as “humanity toward others”, “we are people because of other people”, or “I am who I am because of who we all are,” though other meanings have been suggested.

Download Link : http://www.ubuntu.com/getubuntu/download

http://linux.wareseeker.com/free-gvdown-0.6.5.

Its written in Python

Easy to install & use. AFter installation, open terminal & type gvdown or select from Applications->Internet->GVDOWN-VideoDownloader. I prefer opning from terminal because if it gets stuck in between, the message will be displayed in Terminal.