38. KMyMoney Replaces: Quicken, Moneydance
This app for the KDE desktop offers a very user-friendly interface and can import Quicken files. It humbly claims to be "the BEST personal finance software for Linux users." Operating System: Linux
39. Money Manager Ex Replaces: Quicken, Mint
This browser-based app allows you to access your financial information from your desktop or the Internet, even from your mobile phone. It tracks multiple accounts, including investment accounts, and can import data from Excel or Quicken. Operating System: Windows, Linux, OS X
40. JGnash Replaces: Quicken, Moneydance
This Java-based personal finance manager accepts either double-entry or single-entry transactions in order to make things as simple as possible for the user. It tracks investments and multiple currencies and can import data from Quicken or online banking services. Operating System: Windows, Linux, OS X
41. Yapbam Replaces: Quicken, Moneydance
Short for "yet another bank account manager," Yapbam offers all the typical personal finance software functionality. Although the interface is pretty basic, it does offer some advanced features like the transaction entry wizard, negative balance alerts and automated recurring transactions. Operating System: Windows, Linux, OS X
Openbravo POS boasts nearly 10,000 installations per month and is very popular among retailers. The Java-based app works with most touch-screen POS hardware, and it integrates with Openbravo ERP. Operating System: Windows, Linux, OS X
43. Lemon POS Replaces QuickBooks Point of Sale, AccuPOS
Designed for very small businesses, Lemon POS offers a simple, secure way to make and track sales. It stores data in a MySQL database and works with most bar code scanners and printers. Operating System: Linux
44. POSper Replaces QuickBooks Point of Sale, AccuPOS
This POS system for restaurants and small retail outlets offers an intuitive touchscreen interface, a sophisticated discount system, split tickets, and more. It integrates with POSper BackOffice and many ERP and accounting systems. Operating System: OS Independent
45. Floreant POS Replaces QuickBooks Point of Sale, AccuPOS
For restaurants only, Floreant POS simplifies order management, kitchen automation, and cash handling. It offers an intuitive touchscreen interface, detailed reporting, and support for most hardware. Operating System: OS Independent
Part of the Gnome desktop, Gnumeric reads and writes Excel file formats, but is not meant to be an Excel clone. It offers superior graphing capabilities, a number of unique functions, and an intuitive interface that should seem familiar to anyone who's ever used a spreadsheet program. Operating System: Windows, Linux
47. KOffice KSpread Replaces: Microsoft Excel, Lotus 1-2-3
Part of KDE's KOffice program, KSpread offers many of the same features as commercial spreadsheets, though the interface may feel somewhat unfamiliar to Excel users. It includes a helpful formula list that makes it easy to add functions to your spreadsheets. Operating System: Windows, Linux
48. OpenOffice.org Calc Replaces: Microsoft Excel, Lotus 1-2-3
Calc is part of one of the most popular open source applications of any typethe OpenOffice.org office productivity suite. It reads and writes files from most other spreadsheet applications, including Excel, and it's very easy to use. Operating System: Windows, Linux, OS X
The "world's most popular open source payroll and time management software," TimeTrex standard edition includes modules for employee scheduling, time and attendance and payroll. The commercial business and pro editions (available in on-site or hosted versions) add more ways to track attendance, job costing, invoicing, support, and other features. Operating System: Windows, Linux, OS X
50. eHour Replaces Replicon, Tenrox Timesheet
This app tracks multiple projects, multiple users, and multiple billing rates for organizations that bill hourly, like freelancers, lawyers, consultants, etc. eHour can also create detailed reports , and its available in either a standalone or a client/server version. Operating System: Windows, Linux, OS X