FrontAccounting is a fork of the discontinued OpenAccounting which was a fork of WebERP. So, FrontAccounting is a fork of a WebERP, but right now, they are quite different.
FrontAccounting does not have Recurring Invoices, but it does had Dimensions. Anyway, I had a problem on Windows server (Apache) where this ERP shut down the apache process completely. So I would never risk to use it on a production Linux server.