Until unless you are pointing to any crocked versions or any illegal links then it is ok for x10.
If the softwares are free you can point to their site.
All freeware applications have their own website. Linking to rapidshare makes me suspicious about the files you're linking to. The best thing to do is link to the direct website of the original maker of the freeware application you are wanting to link to. This way users are safe when downloading files.
Untill unless they are given as free they are ok. But it is recommended that link to original software on their site. It is better to avoid rapidshare links