Stripe.net is a sync/async .NET 4.6.1+ client
Read and write operations across cloud providers
A library that can help you with generating PDF documents
Library offering classes to read from and write to spreadsheet formats
JavaPOS implementation and more, for Brazilian Retail applications
Shipping biller is benificial tool for generating shipping bills.
Module for Microsoft Excel 2003 or below to conver LDIF file to .XLS