It s always wise to worry about malware， which is the catch-all term for software that does bad things to your computer. However， the developers who write FOSS tend to be driven by ethical considerations more than the average programmer， so you re far less likely to find annoying features like these in FOSS programs. But because the code is open， If there were something objectionable in a FOSS program， someone could just take it out and distribute their version.
Some people who write FOSS programs do sell other versions that are licensed more restrictively， and for which you might pay something to get more features， but they are separate applications and are covered by different licenses.
Do I have to pay to unlock all the features
Do I have to help improve the software
Can I give this software to other people? Can I use it on multiple computers
Is this software legal to use for my business
Why does it matter that the source is open
A license is what keeps software legally free and open. When you download software， you don t really own the program，sourceforge(英)，http://web.sourceforge.com， even though it s on your computer. Instead， whoever wrote the program gives you permission to run it. Before you install most software， you have to agree to a long-winded legal document. That s the license.
Source code is the human-readable instructions for a computer， it s what software is made fro m. Most of the time， having just an program doesn t let you do anything but run it. But， if you have the source code for a program you could read it， learn fro m it， and modify it to suit your needs.
Frequently Asked Questions In sourceforge
电脑网络，编程，程序综合，sourceforge英官网：http://web.sourceforge.com
