Below is a list of some of our prior open source work If you'd like to find out more just give Justin an email ( justin@sixhq.com )

Url :: http://simpleinvoices.org/wiki/gene_extensions

The 'Gene' extension for http://www.uds.com enables purchase order ability in Simple Invoices. It introduces the concept of unit cost and includes some funky ajax to make editable unit price and cost possible in invoice creations and editing

Url :: http://simpleinvoices.org/wiki/school_extensions

The 'School' extension was development for a language school in Russia. It turns Simple Invoices into a complete school management solution

SixHQ hosts Simple Invoices for a number of organisations on our servers. Refer the hosting page for more info on this

For a few organisations who prefer Simple Invoices to be installed on their servers we have conducted the installation and provide on going support and management of their Simple Invoices instance.