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Hello, I'm Robin. Welcome to JustAnswer. I'm reviewing your question now and typing up my reply. I'll post that in just a few moments.
I do not know if it is the same as the 2 you mentioned but Fidelity has a harvesting tool.
The use of harvesting is no more than selling those that will show loss (most advise to look to short term losses against gains die to the tax rate on short term gains) to offset gains.
The above is a link to the Fidelity page
I see, you want something that does all the work for you. I am sorry but I do not know of any that would act as a virtual broker.
If I come across one I will forward that to you