More information is available on the Internet. Your needs will direct your search. Look first for the capabilities you absolutely need. Then consider the range of functionality, the availability of technical support, and quality of the documentation. Speed of learning is also important.
Technical support is an important issue.
The table below lists many tools along with their application to specific tasks. Internet addresses for the Web sites are included. You may want to find out more about specific products. Often actual copies of the tools can be downloaded freely from the product Web sites on the Internet. For the most complete evaluation, some products, complete with all documentation, can be purchased on a trial basis.