Let me start by making clear that I am the lead developer of the project so my view might be a bit biased.

I would like to request that RSPET (https://github.com/panagiks/RSPET) is included in Kali tool set.

RSPET is mainly a Reverse Shell. It's traffic is encrypted through ssl and with minimum reconfiguration can use certs issued by trusted CAs (not the default method in order to cater to a wider audience). It is configurable through a configuration file. It is expandable through a plugin system. It can be interfaced from its command line interface, its API or its RESTful WebAPI. For the later there is a Front-End interface being developed from a team in Thessaloniki's, Greece Hackerspace.
RSPET is being actively developed as an Open Source project for nearly a year. It is licensed under the MIT license, allowing redistribution, modification and sub-licensing. Dependencies are Python2.7 and openssl (for cert creation during setup) for the main Server and optional dependencies are Flask and flask-cors (both available through pip) for the RESTful WebAPI. The source code and nearly all the projects features and interactions are documented at : http://rspet.readthedocs.io/

Thank you for your time and great work !