Second Life is described as 'Dive into a 3D virtual world featuring user-generated content, customizable avatars, and a thriving economy, ideal for socializing and exploring diverse communities' and is a simulation games in the games category. There are more than 25 games similar to Second Life for a variety of platforms, including Windows, Android, Mac, iPhone and Linux apps. The best Second Life alternative is OpenSimulator, which is both free and Open Source. Other Second Life like games are VRChat, Overte, Avakin Life and Resonite.
Second Life alternatives are mainly Simulation Gamess, but if you're looking for
Social Networks or Sandbox Games you can filter on that. Other popular filters include
Sandbox Games,
Android,
iPhone and
EU. You can also filter by region, for example
EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Second Life.
Basically, OpenSimulator is the free, open-source, reverse-engineered version of the Second Life® engine, which you access with the same viewer. As a consequence, you can see exactly the same kind of content — but running from your own server at home, if you wish, for zero hosting costs.