siwapp 
Posted on May 16, 2009
Free online invoice system
An open source web application meant to help manage & create invoices in a simple, straightforward way.
Features to make you get the sweet
- Simple & straightforwards: It does only one thing, but does it very well.
- Comfortable: Everything is placed where you are expecting to find it.
- Useful: Manage invoices with different serial numbers (as rectification invoices).
- Pretty: Obtain printable pdf versions of the invoices, with a professional look & feel.
- Flexible: Save drafts of your invoices and continue editing them later.
- Productivity – oriented: Automatically generate invoices on a periodic basis.
- Anywhere: Bill from any internet connection enabled place using a secure & restricted access.
- Secure: Meets all your privacy and security requirements, and allows you to backup your data on your computer at any time.
- Supported: It has a growing community of developers continuously working to add new features.
