cheat-engine-linux
There are 2 repositories under cheat-engine-linux topic.
rednik1337/CheatTurbine
Cheat Engine alternative for linux
mentebinaria/maProc
As the name maProc informs, it will map processes in linux, being able to check a process's stack/heap in User Land, being able to change the memory with write permission, you can manipulate the process by sending a SIGNAL and can stop or pause it process.