Where can I download older browsers?
It is always a good idea to test web designs in as many browsers as possible (plus in non-browser tools - like search engine indexers). To do this, the author should acquire a number of browsers that his target audience are likely to be using, this includes browsers that are no longer supported by their software creators (e.g. Microsoft Internet Explorer 4)
As well as accumulating a number of browsers, the author also needs to do some testing on alternative platforms, like Linux, Apple Macintosh, Solaris, BeOS, QNX. A few of these platforms are Open Source, thus available at a very low cost.