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Electronic commerce (e.g., Amazon, eBay, Zalando, Etsy),
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Accommodation sharing (e.g., Airbnb, Homestay),
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Real estate (e.g., Booking.com, ImmobilienScout24),
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Mobility (e.g., Getaround, BlaBlaCar, Uber, Lyft, Zipcar),
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Freelancing (e.g., Upwork, Fiverr, 99designs, Freelancer),
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Manual work (e.g., Helpling, TaskRabbit, MyHammer),
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Micro tasks (e.g., Amazon Mechanical Turk, Clickworker),
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Career and job search (e.g., Indeed, Monster, Glassdoor),
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Temp work & jobbing (e.g., Zenjob, InStaff),
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Food delivery (e.g., Deliveroo, Uber Eats, Just Eat),
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Research recruiting (e.g., Prolific, Qualtrics),
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Dating (e.g., Parship, Tinder, Bumble),
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Review sites (e.g., Kununu, Jameda, TripAdvisor, Yelp, Google Maps),
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Appointment management (e.g., Doctolib, OpenTable),
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App marketplaces (e.g., Google Play, App Store),
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Price comparison (e.g., Idealo, Verivox, Check24),
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Crowd funding (e.g., Patreon, Kickstarter, GoFundMe, Indiegogo),
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Crowd investing (e.g., Companiso, AngelList),
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Crowd lending (e.g., PeerBerry, Zopa, Ratesetter, Funding Circle, Auxmoney),
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Video streaming (e.g., Youtube, Twitch, Vimeo),
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Music streaming (e.g., Spotify, Apple Music, Deezer),
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Games marketplaces (e.g., Steam, Epic Games Store),
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Knowledge exchange (e.g., StackOverflow, Quora),
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Social and professional networks (e.g., Facebook, Instagram, TikTok, Twitter, LinkedIn, Xing),