Teamleader - CRM, invoicing & project planning in a single tool for SME's
Invoice Ninja - Invoice Ninja is a free, open-source solution for invoicing and billing customers.
FreshBooks - The ideal accounting software for small business owners.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
InvoiceLion.com - Web based open source time management and invoicing software
Benson Bank CMS - Benson Bank CMS manages your finance for free.