Subwasm is a cli utility to look inside a Substrate WASM Runtime. It can inspect and compare the metadata of Substrate based runtimes such as Polkadot or Kusama.
As dev or end user, if you keep looking for the right endpoint for your Polkadot/Substrate blockchain, `subrpc` will make your life much easier. It is like the apt/brew of substrate chain endpoints: Add registries, update, and you are set.