Kipernal's Blockreator that allows you to simply create custom blocks to be inserted with GPS.
The blocks can be created by selected certain conditions and events to occur when the player or a sprite touches the block.
See the readme for details.
This version adds the wallrun offsets, as well as fixing various bugs with labels and certain codes not working properly.
Really though, this is meant for people that don't know asm but want to make simple blocks, if you want to actually work with memory you shouldn't use this kind of tool or at least know enough about how it works to modify it so it works imo