Tool to automate account creation

Hello,

Basically I want to create accounts on ~20 different websites with a set of credentials (same email, phone, name, birthdate etc.) . I don’t mind doing this from the same IP. No captchas involved.

Another possibility would be a tool that lets me define all form fields on a site and input predefined variables that I decide.

Anyone know of any tool that’s flexible enough, or does this sound like a custom job?