Robuta

https://github.com/silentsignal/net.tcp-proxy
A python based library to interact with .net webservices with net.tcp binding. Supports MC-NMF, MC-NMFTB and MS-NNS and contains a proxy for reading...
tcp proxygithubnetpythonbased
https://linuxhandbook.com/newsletter/25-09/
Weekly... that's what majority voted for.
vim tipstcp proxylhblinuxdigest
https://www.thegeekstuff.com/tag/perl-tcp-proxy/
tcp proxyperl