I have built tools to simplify actions we carry out everyday at Flutetrwave as regards software development, API level testing and Technical Support. It includes but is not limited to TripleDES Encryption and Decryption, Credit Card Generation and Validation using the Luhn Algorithm, Front-End Client for the Flutterwave API's, Our New Hosted 3DSecure implementation. This is updated regularly as the need arises to build new tools.
The demo can be found here: https://fwutils.herokuapp.com/