I have recently heard people saying "I only have a small free version of 7-Zip and my family does not want to spend more money." Then I thought "What the heck!? 7-Zip is free, open-source software." Then I read this comment of the Minecraft forums "Neon_ColorsFTW22, on 27 May 2012 - 03:04 PM, said:
View Postfrostyboys, on 27 May 2012 - 11:37 AM, said: ...the problem is I run a small free version of 7-zip, and family does not wanna pay more money... ...I THOUGHT 7-ZIP WAS FREE FOR FULL?... Yes, 7-Zip is free for all purposes. But most free software is also sold (illegally, might I add) by third parties, because there are many users such as frostyboys and his family who can easily be tricked into buying it still. People want money, and some of them don't care how they get it. Selling open source software is quite profitable as the average human is not so knowledgeable.
Edit: I stumbled across this topic because I was researching a similar problem. Forge and AudioMod weren't playing nice together. The solution: Forges's sd.class has AudioMod support, so make sure Forge overwrites AudioMod and not the other way around. "
As you can see several people have been scammed. 7-Zip is indeed totally free software for all features (Although they do like donations). For the actual website for 7-Zip go here: http://www.7-zip.org/
By the way: YAYZ! NEW ALPHA IS OUT!