Keep your finance history! I've used excel. But at the moment I use this app, Gnucash
I have been using Quicken for 20 years, but I have always been dissatisfied. Quicken is limited, and they never seem to make progress quickly enough. It seems like they are always working against the user. So I have been following Gnucash for many years, waiting for a time when it might be an acceptable alternative. Unfortunately, Gnucash is not even close to being mature software yet. The documentation is excellent. Very rare to see excellent documentation in a free-software project. However, the software itself (under Windows 8) does not work at all. The stable version 2.4.13 will not even open. I am sitting and looking at the start-up screen now on my computer, which has frozen at the splash screen. Version 2.5.5 (unstable) lives up to its name. Although it gets past the splash screen, it crashes when attempting to save a transaction into PostgreSQL. So, I will continue to monitor this project. Maybe in another 10 years...
I use it mainly for Accounts Receivable and Invoicing. Business functions like Process Payment have been greatly improved in the last few iterations. The only draw back is the VERY awkward process of changing the look of the invoices. There are great big white spaces around all the items in the header, so fully a third of my invoice is header. System works well, recommend it
I use GnuCash for personal accounts, and also for company accounts and invoicing. The features are great, and usability is improving all of the time, but is more than usable as is with a bit of trial and error.
Russian localisation v2.6.6 crashed in WinXP sp3 in a moment of creating new database file in menu New book settings (on russian) and press Enter (next).
From the version 2.6.4 (including 2.6.5) doesn't show reports at all. Just a blank tab! :(