There is a new bot available that currently works, it's called CatchEm.
Since Necrobot has practically died, this is the next best thing. I'd still recommend using a VPN with this bot though: You must login or register to view this content.
It's much better to be safe than to be sorry.
CatchEm Bot download: You must login or register to view this content.
Here is a video on how this bot can work:
This works great for me, and the best part is you can alter the settings for better XP per hour. Have fun botting! Stay safe.
To SAVE the Config settings, you can edit the config settings here:
Currently the only reliable bot I know about is pokebot.ninja. You will need a hash key from Bossland to access the current API. This costs money.
Do not use any of the old bots posted up on NGU. They are very outdated to say the least.