Most of the online businesses suitable for solopreneurs are among these: Business Growth Services, Online Store (Webshop), Affiliate Marketing, Dropshipping, Online Course, Advisory and Coaching, Membership Program, Digital Marketing, Social Media Marketing, or Freelancing.
Are you active or in a process of starting in one of the above domains? Let us know what kind of online business you (want to) have so that we can help you with more relevant information and support.