Programs available on this page are mostly freeware programs. It means that you can freely use them and distribute them (unless you are trying to modify them).
Programs are distributed as installation packages. Download the package and deploy/install it by running it.
Programs distributed in zip archive format are usually for MS-DOS. You have to unzip the files into a local directory. Then you can usually directly start the program from there (without any additional installation).
Programs marked with (CZECH) are available only in Czech language. Other programs are available in English language.
If you like any of the programs then let me know that.