[Discover] BambooInvoice: Simple, Beautiful, Open Source, Online Invoicing http://www.bambooinvoice.org/
(opensource business php design) 
[Discover] FreshBooks - The Fastest Way to Invoice Your Clients http://www.freshbooks.com/ (business software accounting gtd)
[Discover] Blinksale | The easiest way to send invoices online http://blinksale.com/home (business webapp design tool)
[Discover] Create an invoice quickly, simply - simplybill http://www.simplybill.com/ (business accounting billing software)
[Discover] Simple time tracking software - Harvest http://www.getharvest.com/ (timetracking resources webapp statistics)
[Discover] Web-based job tracking, invoicing, reporting & project management software for the part-time ... http://sidejobtrack.com/ (business tools free management)
[Discover] Projecto Colibri: Sobre o Colibri http://www.projectocolibri.com/page.php?2 (database freeware opensource software)
[Discover] Billings 2.5: Time tracking and invoicing for Mac OS X http://www.billings2.com/anatomy/ (billing template invoice advice)
[Discover] Simple Invoices http://www.simpleinvoices.org/ (opensource finance business saas)
[Discover] Stunt Software - On The Job http://stuntsoftware.com/OnTheJob/ (timetracking mac osx business)
[Discover] Less Accounting :: track expenses & sales leads, create / send proposals & invoices http://www.lessaccounting.com/ (finance business tools invoices)
[Discover] Billings 2.5: Time tracking and invoicing for Mac OS X http://www.billings2.com/ (mac business software osx)
[Discover] Invotrak - track your invoices http://www.invotrak.com/ (tools free business finance)
[Discover] Side Job Track http://www.sidejobtrack.com/about/tour.php (useful projectmanagement cool free)
[Discover] The Invoice Machine | Create Invoices Easily And Free http://invoicemachine.com/ (business invoice tools freelance)
[Discover] FreshBooks - The Fastest Way to Invoice Your Clients http://www.freshbooks.com/ (business software accounting gtd)
[Discover] Blinksale | The easiest way to send invoices online http://blinksale.com/home (business webapp design tool)
[Discover] Create an invoice quickly, simply - simplybill http://www.simplybill.com/ (business accounting billing software)
[Discover] Simple time tracking software - Harvest http://www.getharvest.com/ (timetracking resources webapp statistics)
[Discover] Web-based job tracking, invoicing, reporting & project management software for the part-time ... http://sidejobtrack.com/ (business tools free management)
[Discover] Projecto Colibri: Sobre o Colibri http://www.projectocolibri.com/page.php?2 (database freeware opensource software)
[Discover] Billings 2.5: Time tracking and invoicing for Mac OS X http://www.billings2.com/anatomy/ (billing template invoice advice)
[Discover] Simple Invoices http://www.simpleinvoices.org/ (opensource finance business saas)
[Discover] Stunt Software - On The Job http://stuntsoftware.com/OnTheJob/ (timetracking mac osx business)
[Discover] Less Accounting :: track expenses & sales leads, create / send proposals & invoices http://www.lessaccounting.com/ (finance business tools invoices)
[Discover] Billings 2.5: Time tracking and invoicing for Mac OS X http://www.billings2.com/ (mac business software osx)
[Discover] Invotrak - track your invoices http://www.invotrak.com/ (tools free business finance)
[Discover] Side Job Track http://www.sidejobtrack.com/about/tour.php (useful projectmanagement cool free)
[Discover] The Invoice Machine | Create Invoices Easily And Free http://invoicemachine.com/ (business invoice tools freelance)