FreeSO is described as 'While FreeSO aims to be faithful to the original game, it includes many quality of life changes such as hardware rendering, custom dynamic lighting, hi-res output and >2 floor houses'. There are four games similar to FreeSO for a variety of platforms, including Windows, Mac, Online / Web-based, Steam and Windows Mobile. The best alternative is The Sims. It's not free, so if you're looking for a free alternative, you could try OpenSimulator or SocioTown.
The Sims is a series of life simulation video games developed by Maxis and published by Electronic Arts. The franchise has sold nearly 200 million copies worldwide, and it is one of the best-selling video games series of all time.
OpenSimulator is an open source multi-platform, multi-user 3D application server. It can be used to create a virtual environment (or world) which can be accessed through a variety of clients, on multiple protocols.
WHAT IS SOCIOTOWN? SocioTown is a massive multiplayer Virtual Game World. Players can chat and socialize while also building up their social status by doing jobs and upgrading their homes. LEVEL-BASED GAMEPLAY