[plug] [OT] Billing/Invoicing Software

[Tim]

I'm looking for some simple (probably PHP based) billing software that
will easily allow me to bill customers, with recurring bills and not
balk when the customer is in credit and so doesn't owe us anything but
still send them the monthly invoice.
I'm currently playing with simpleinvoices.org but am wondering what
other people use. Ideally I want a piece of software that has been
updated in the last 12 months, so semi active development is good,
unless I can find a project that is really mature.
PDF invoices would be nice, but text emails is also ok. And it doesn't
need integration with credit card/paypal systems, manual processing of
payments is just fine.

Thanks guys!

Tim

-- 
Timothy White - Somewhere in Australia