LibOFX: The open source OFX parser library
- An API that allows applications to support Open Financial eXchange command responses, usually provided by financial institutions for bank statement downloads.
- http://libofx.sourceforge.net/

GeniusTrader - Trading Systems, Backtesting and Charting
- GeniusTrader is a perlbased, GPL-software for the creation of trading systems and to backtest them. It also includes a large database of common indicators and signals and is capable of displaying all the stuff in various formats.
- http://www.geniustrader.org

Linux-based Financial Software
- Discussion of Linux-based Financial Software.
- http://www.cbbrowne.com/info/financelinux.html

GnuCash - Accounting Software for Linux
- The GnuCash Project aims to develop GPL'ed financial/accounting software modules. GnuCash itself is a Gnome Desktop application aimed at personal finances and home users.
- http://www.gnucash.org/

GCompte
- Lightweight bank accounts program in GTK and glade.
- http://www.linux-france.org/prj/gcompte/

Kapital
- A personal finance manager package for KDE and Linux. [Commercial}
- http://www.thekompany.com/products/kapital/

Proven Software: Business Accounting Systems In Linux
- Financial Software for Linux.
- http://www.provenacct.com