Small Business Break-Even Analyzer is a free software package you can add to your web site to run a quick, easy break-even analysis on business models.

SimpleFinance is an easy to use, state-of-the art web application for your personal needs in accounting. With this piece of software you can manage your whole money accounts at anytime, anywhere in the world. There are some good accounting applications out there, but no one is as simple as SimpleFinance. Furthermore it's freeware and webbased.

Projecting income needed for retirement is a difficult task. Most retirement calculators assume that current spending levels will increase each year due to inflation. Even with moderate inflation assumptions, the result is often a discouragingly unrealistic retirement plan. In reality, retirement spending data show that most households naturally spend less as they age. The Reality Retirement Calculator allows you to take this essential fact into account in preparing your plan. The calculator is designed to project, based on information you provide, a realistic appraisal of retirement spending needs and the savings goal needed to meet these needs. The calculator also provides a comparison with the more traditional retirement planning approach.

Create and Print invoices with ease, with this PHP Invoice design form. Completely customisable to your specifications via the config file. Enable/Disable VAT. Use your own letterheaded paper or add your own graphics/logo to the form.

MiniBill is a great Open Source program for a small-medium business. It uses Authorize.net for recurring billing, and has great reporting capabilities and is easy to program and make custom addons and plugins. We're striving to keep the core of MiniBill as basic as possible, so you can download plugins as you need instead of having a boatload of featuers you DON'T need. Visit our site, see the demo, download MiniBill!

This is a PHP class that calculates an Annual Percentage Rate (APR). It can be incorporated into your own applications.

Bambooinvoice is free open-source invoicing software intended for small businesses and independent contractors. Our number one priorities are ease of use, user-interface, and beautiful code. It was built by designer and programmer Derek Allard, who uses it everyday, not by a large firm who can't remember the names of its customers. It is meant to be sexy, both on top of, and under the hood. Go ahead, kick the tires. View source shows semantic, structured, meaningful XHTML. We use AJAX to keep things peppy and javascript to keep things functional. The entire application degrades gracefully for users without javascript enabled, and complies with WAI priority two.

Auction Business Manager is a sweet tool that helps you keep track of income and expenses for your online auctions, like with eBay. It also color codes your listings so that you can easily see who you need to ship packages to, and who needs to pay.