Here is one but not for equities https://tradinglite.com/. Source: almost 3 years ago

I saw some of the members of this community are using https://tradinglite.com/ to scan for sell walls, also in the past. Something called trading x-ray. Source: about 3 years ago

KingsCrowd - non-accredited and accredited investors. This site aggregates and rates deals across all the platforms you mentioned that have Reg CF and Reg A offerings, such as Wefunder, Republic, StartEngine (acquired Seedinvest), and I think 50+ others. Also have a handy portfolio tracker tool for managing all your investments. You don't invest ON KingsCrowd, but you can do your diligence there, review... Source: about 1 year ago

Can research companies on sites like Crowdonomics (my site), KingsCrowd (competitor), and others. Having made investments through WeFunder, I can say their tracking of companies and the updates I've gotten are very poor. Republic and StartEngine seem to have more engaged companies when it comes to providing updates and transparency (and general platform usability too). DM me if you want to talk further about... Source: over 1 year ago

A couple credible resources for research are: - Crowdscale - KingsCrowd. Source: over 1 year ago

You can sign up on kingscrowd.com or https://www.withvincent.com/. Source: over 1 year ago