Use this for personal finance planning. It can also get stock quotes from various exchanges.
Quicken was very popular, had several features as a paid product, but it has now moved to a subscription model for licence fees.
Being a home or small business user means that Quicken is a recurring operating expense. Though it’s one of the best, GnuCash has a big advantage. It’s robust, open source, cross-platform, the oldest around and very well maintained by a strong developer community.