CadEditor is a universal level editor and some romhacking tools for many different games for NES and SMD platform.
Some of them:
Chip & Dale 1-2, Darkwing Duck, Duck Tales 1-2 MegaMan 3-5 Tale Spin Little Mermaid Jungle Book Flintstones Contra Hard Corps Earth Worm Jim 1-2 Pitfall etc.
There are more than 400 configs for 500 levels for more than 80 games.
Configs are simple C# files, and they have simple structure, so new games can be added with no problems.
Full list of supported games:
https://github.com/spiiin/CadEditor/blob/master/CadEditor/cad_editor_supported_games.txt
More info:
http://spiiin.github.io/CadEditor/
(russian version)
Patreon page of editor:
https://www.patreon.com/CadEditor