Boekhouding is Dutch for accounting. This piece of software is usable as accounting software for small companies.
To install, run setup.php and answer the questions (currently the setup is only in Dutch).
Boekhouding is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.