The person I'm working for needs some functionality his accounting package doesn't support. Specifically, he needs the capability to run an AR aging for a subset of his customers. He's using something called AccountEdge, which used to be MYOB.

One way to solve this is to switch to an open source accounting package, so I could add functionality as needed. I did a little investigating, and found a number of choices, including:

WebERP
JFire
FrontAccounting
XTuple PostBooks
SQL-LedgerSMB
Phreedom
BS1 Accounting

The only absolute requirement is multi-user. Web-based would be preferred.

At least one option listed above uses PostgreSQL as the backend. I've never used that before, and there would definitely be a learning curve. Based on some quick reading, it looks like there's no clear-cut reason to prefer PostgreSQL over MySQL or vise-versa. They're currently processing an average of about 100 Purchase Orders a day, so either database should easily be able to handle that.

Anyone familiar with any of these packages? I'm still in the early investigative phase, so "other" suggestions are welcome too.