How is freelancing viewed under Marxism? How does Marxism view freelance workers? Since a freelancer is the owner of their means of production, are they still viewed as exploited by the bourgeoisie? Could freelancing exist in a Marxist society?
Marx addresses this about two-thirds of the way through Section 1 of the Manifesto. In the standard English edition of 1888, it reads:


  The lower strata of the middle class - the small tradespeople,
  shopkeepers, and retired tradesmen generally, the handicraftsmen and
  peasants - all these sink gradually into the proletariat, partly
  because their diminutive capital does not suffice for the scale on
  which Modern Industry is carried on, and is swamped in the competition
  with the large capitalists, partly because their specialized skill is
  rendered worthless by new methods of production. Thus the proletariat
  is recruited from all classes of the population.


So his basic argument is that, sure there might be small business owners (freelancers in this example), but that because of 1) inability to compete against large firms ostensibly taking advantage of economies of scale and 2) rapid development of technology, they become obsolete and are driven to the proletariat.