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GnuCash is personal and small-business financial-accounting software, freely licensed under the GNU GPL and available for GNU/Linux, BSD, Solaris, Mac OS X and Microsoft Windows.

HomeBank is a free software. Use it to manage your personal accounts. It is designed to easy to use. Analyse your finances in detail using powerful filtering tools and graphs.

Mint.com is a free web-based personal financial management service for the US and Canada.

Paymo is an online project management application that helps you deliver projects on time and on budget by eliminating bottlenecks through accurate time tracking & reporting.Paymo can help you with task management & collaboration, time tracking, invoicing, estimates & expenses.

Tryton is a three-tiers high-level general purpose application platform under the license GPL-3 written in Python and using PostgreSQL as database engine.

The suite of applications Stoq is an innovative set of business management applications available as free and open source software.

Send, track and collect payments quickly. Great for teams, freelancers and service providers. FreshBooks is an easy cloud accounting app for small businesses and freelancers, specifically designed to save you time billing clients. Create professional invoices, capture expenses with ease and effortlessly track time on projects; it’s all here, plus you’ll be ready for tax time.

FrontAccounting is a simple, but powerful, system for the entire ERP chain and covers:

The most popular version of Americas #1 small business financial software helps make your business more profitable.

The easiest way to track and forecast your wealth - using a calendar. Put all of your income and expenses on a calendar so its easy to see your daily balances, when bills are coming out, get reminders and see where your money is going.