PayPal has announced the release of a new PayPal Invoicing API, which aims to provide small businesses with the tools necessary to easily create, send, and process invoices. Although targeting small businesses, the company has noted that the API has a global reach.
Cashboard appears to be a full featured and mature time-tracking and invoicing system. It’s been about 9 months since the company opened its system up with its Cashboard API in beta, which continues to this day. The customer testimonials are quite persuasive and could lead to removing that manual Excel spreadsheet approach from the equation. After all, we're much more web savvy, right?
Our API directory now includes 35 invoicing APIs. The newest is the CashFlows API. The most popular, in terms of mashups, is the PayPal API. We list 33 PayPal mashups. Below you'll find some more stats from the directory, including the entire list of invoicing APIs.