billingbooth Billingbooth.Api by: billingbooth .NET Framework 4.0 This package targets .NET Framework 4.0. The package is compatible with this framework or higher. 500,554 total downloads last updated 4/23/2018 Latest version: 0.0.0.293 Billingbooth API billing engine An experimental API client library for the Billingbooth invoicing and billing engine.