I thought this would be the core function of each block explorer.
So I'm looking for a block explorer that does this without using an external Sotware like "Electrum" for it.
Does anyone know such a block explorer?
If you want to get all the transactions for a bitcoin address you are going to need a database, or wait a long time as the explorer parses the entire (350+gb) blockchain every time you do a search.
Most of explorers wind up using the electrum server because it's been around a while and it works well. Kind of like why reinvent the wheel.
Bitcoin abe might get you part way there with some tweaking.
-Dave