The internet is sometimes too slow in downloading large files. There are vast amounts of other sites that offer free, demo or trial software. The sites listed here are comprehensive portals, and several manufacturers of killer software. The programs are mostly only for WinNT and Win9x operating systems. Please tell me changes of links, e.g. by updates.
Suggestions are welcome.
However, they are useful tools. If the above list does not satisfy your needs, the following short list offers other sources. The order is alphabetic, not a valuation. In this list several useful links are also included. The Biocatalog , a software directory of general interest in molecular biology and genetics.