Hello and thanks for asking this question. I’m sure some (or maybe most) of us are probably a bit shy about widely promoting our products on this forum so as not to come across as abusing the forum for personal gain.
Yes, I’m a vendor - Trinitas Trading - link in my profile.
Mainly focused on building top-tier and feature-rich common standard tools used by a large number of discretionary traders regardless of their methodology or timeframe (scalper, day trader, swing trader). Tools that identify/measure Market Structure and Orderflow (Footprint, Volume Profile, T&S, VWAP/TWAP, Delta).
I utilize Stripe for payment processing and NT’s Vendor Licensing portal for managing licenses and free trials. @Quagensia above listed how to get on this program so I won’t repeat. I also have my own home grown mechanism to remotely shut off access to unauthorized users who find ways to go around NT Licensing Portal.
Also, you’ll need SecureTeam AgileDotNet software for code obfuscation to prevent potential hackers from reverse engineering your code from the compiled assembly. This has its limitations, but it’s better than no security.
Good luck with your endeavor.