CNET's website has the most free to try software on the internet. There are many torrent based websites that allow you to download free software as well but they are not always legal or reliable.
There is no free full version. If you want to use this software, you will have to purchase it.
You have to pay for it, unless the full version is available free of charge.
You can get the free version 3.0 or you can get a free trial of version 4.0 but then you have to pay around 97$ for the full version of version 4.0 but yes version 3.0 is free
A trial version of software means that it is not free. You can use it for a time, but after a while they will ask you to pay to upgrade to the full version. The same thing happens with shareware software.
Most 2012 free tax software is actually not a full version of the software. There are some free portions of software that companies release as "demonstration" versions. This might be the federal return preparation part of a software package. If you want to prepare your state tax return with such software, you would need to buy the full version.
Free antivirus software can be obtained through the AVG website. Their free version does not have all the same features as the full version but it does a good job of protecting your computer.
yes
The full version of Messenger Live can be downloaded for free from the Microsoft website. One can also get it from major software download sites like Softonic and CNET.
A sample of Norton software can be downloaded for free, but not the full version. This 'sample' is so that you can try it out and see if you like it before you decide to purchase it.
the SAM animation has a free demo. The full version can be bought for 30 dollars. I have the demo, but it cannot detect my webcam. The demo has many flaws. I do not know if the full version is any better.
Full packaged software.
To turn a trail version into a full version, you must pay a fee to the owner of the software. The owner will email you a license key which will allow you to either download the full version, or to open the trial version into the full version.