Here you can find software products, which are granted as a freeware under certain conditions. This list doesn't include evaluation versions of shareware products, but it includes only those ones that can be used as a freeware. Check each downloaded package for additional licensing info. In case of no such info, treat the downloaded package according to the download agreement.
However as some of these product are free including their source code, you should check out the price list to professionally use all of them.