Calamar is the open source accounting program written in Java. Since Calamar is developed in Java it runs on all platforms. This software is compatible with BSD, MacOS, OS X, OS Independent, Linux and all Unix like operating systems. Calamar needs the support of Cocoa, Win32 or X Window System to run successfully. Calamar is released under the terms of GNU General Public License.

Calamar provides adequate support to Financial and Accounting operations along with supporting Office/ Business applications. This software acts as a Filemaker Database and is used for time billing.

The recent version of Calamar supports username and password. By using Calamar, the user can handle multiple customers, projects and clients with multiple currencies. Not only multiple currencies, Calamar provides some other interesting features in financial and accounting areas.

Calamar offers the facility of automatic VAT (Value Added Tax) calculation along with the provision of booking on cost center. More than two lines booking can be done through this software. The chart of accounts offered by Calamar is very flexible and user friendly.

Reporting for PnL can be done in a very flexible manner through Calamar. This software also supports the time recording method and multiple projects. This multiple client general ledger accounting program Calamar is available in three languages- English, German and French.