Glassdoor reviews companies. Sibyl reviews the founders behind them. Before you join, invest or partner, look up any founder and see how they actually treat people: their ratings for respect, honesty and keeping promises, how many would work with them again, and behavior-tagged reviews that make patterns obvious. Every review is moderated and describes what the founder did, founders get a right of reply, and it is members-only, anonymous and never on Google. Free.