Essentially... it's just a basic old-school packet logger for NosTale (a really old and broken mmorpg game), with ambitions to become something more. Although it may resemble old Elektrochemie's work, it's been written by me from scratch. Ok, fine, I recycled some code from my old projects, so let's say almost from scratch.
You can find the latest .dll release here. If you are unsure which file to choose, grab the one named DevTale-Release.dll.
Come on, the software is open source, go and check it yourself.
Copyright © 2019 Piotr "Xeno" Adamczyk
Code is under the GNU GPLv3 license (tl;dr - if you release a modified version of DevTale, you need to disclose the source under the same license).