Proxies

A browser profile is only half of a separate identity. The other half is the network address it connects from, and a rack of accounts sharing one datacentre address does not look like a rack of separate people. Proxy providers rent addresses that belong to residential or mobile networks instead.

These are infrastructure vendors, not creator tools, and they are priced like infrastructure: by the gigabyte of traffic, by the port, or by the month per address. The things to compare are the price per gigabyte at the volume actually used, whether a session can hold the same address for as long as it needs to, which countries and carriers are offered, and how the provider documents the origin of its addresses.