Expense reporting, time tracking and invoicing system. Starts from $12/mth for 1 user. $40/mth for 2-5 users. Pricey, but looks solid. Includes twitter based SMS/IM integration (neat). Feels quite ajaxy, nice design. Hat tip Jamie Cockburn.
Intervals is an online time tracking / invoicing system like FreshBooks / CashBoard. The web site seems dull. SSL is only available on $100/mth+ packages. $20/mth covers up to 10 projects, 500Mb, unlimited users.
Online time tracking and invoicing tool like FreshBooks. Paid accounts from $12/mth, 7 projects, unlimited invoices, unbranded, online payments, pdf invoices. Looks good. Multi-currency support.
Zoho is a multi-currency, online invoicing tool. Free to $35/mth from 5 to 1'500 invoices/mth, pdf invoicing at all levels. $5/mth for 25 invoices, unbranded. Integrates with online payment and Zoho Project.
Blinksale is an online invoicing service, similar to FreshBooks, but with less functionality. Free for 3 invoices / month, $12/mth for 50, $24 for 250 including PDF invoicing, $49 for 1'500 invoices. Oozes ajax / rails / design. Integrates with PayPal.