Trapcode Form is a product of Red Giant, you can purchase it from their website.
Trapcode Particular is a plugin for Adobe After Effects, used in the video effects (VFX) industry to create particle effects. These particle effects are often used to replicate difficult-to-model natural phenomena such as fire, smoke, rain or snow, among other things.
You can download it by searching, "Adobe After Effects CS4 Download." After you search it, an option should be, Adobe After Effects CS4 on Adobe.com. Once you select that option you can sign-up on Adobe, and download the free trial.
If you want to animate a dust cloud, your best bet is trapcode particular, but if you want a rain cloud, find a picture of cloud on clear skies and key out the blue background.
Well, you can get Adobe After Effects CS3 for free, but the newer versions like CS4 and CS5 cost about $250.
See the Related Links below for the official Adobe After Effects CS4 free trial download you need, plus a solution for your situation.
As far as I know, CS5 and CS4 cost about $250 average. However, I have Adobe After Effects CS3 Pro, for free. There are numerous download links on youtube for CS3, but you should watch out. I can't count how many of those programs are spyware.
There are countless free ones on Megaupload.
The trial download is free, direct from Adobe. If you want the full version, try a giveaway. (see related links below)
You cannot download the full version for free. (That would be illegal). But you can download the 30 day trial version from Adobe's website (adobe.com -> downloads -> trial downloads -> adobe after affects -> try -> login -> download!).
Adobe after effects is a professional special effects software for creating insdustry standard visual effects.
No.