Open Source API Gateway written in Go
WireMock.Net is a product for stubbing and mocking web HTTP responses
Make writing Java http clients easier
AS4 Solution for ENTSOG, e-SENS, ebMS, PEPPOL, ICS2, BDEW
XML sendengine UTF8 in different formats Batchfunction
Validador CFD CFDi version 2.0, 2.2, 3.0 y 3.2