Sure, there are many other software solutions out there. Unfortunately, for our financial backer and first client, none of these solutions completely fulfilled the needs of his business. Furthermore, the solutions that are available are expensive and follow strict hardware/software requirements.
Check out our System Requirements page for detailed information. Simply put though, our software has been built and tested on a server with 1 CPU core and 2 GB of RAM and a 20 GB hard drive. (This server ran with 20,000 customers, 200,000 item records and an audit trail of 19 million records with no visible lag)