Those who can make you believe absurdities, can make you commit atrocities...
 
Voltaire
 
There is no nonsense so arrant that it cannot be made the creed of the vast majority by adequate governmental action.
 
Bertrand Russell

Accounting

AceMoney Lite

AceMoney Lite Version (Single User) is just the thing for your small business or personal finances.
AceMoney works well under Linux with Wine
https://www.mechcad.net/acemoney-lite/
https://www.mechcad.net/downloads/

GnuCash

Personal and small-business financial-accounting software, freely licensed under the GNU GPL - Windows, Mac OS X and Linux.
www.gnucash.org

PLCash

PLCash is a platform-independent personal finance program. Runs on Windows, Mac OS X and Linux. NB: PLCash needs Java to run.
http://www.arachnoid.com/PLCash/index.html
Windows
http://www.arachnoid.com/PLCash/PLCash.exe
Jar file for Mac OS X and Linux
http://www.arachnoid.com/PLCash/PLCash.jar

TurboCASH

TurboCASH's single/multi user accounting software
http://www.turbocash.net/
https://www.turbocash.net/pages/TCDownload.html
Download free version 4...
http://www.sourceforge.net/projects/turbocash