Quicken is a range of personal finance software published by the Intuit corporation. Quicken is the market leader in this field. The software is available for Windows and (after much protesting by Mac Users after Intuit announced they were dropping Mac Support) the Macintosh.
Intuit is trying to market the Quicken software and the related Quicken.com website as THE electronic personal finance solution.
Personally I think Quicken is useable but there is oh so much they could do to improve it.