The best free mouse button mapper software depends on your operating system, but X-Mouse Button Control stands out as the ultimate free tool for Windows power users, while LinearMouse is the top open-source choice for macOS. Third-party remappers allow you to transform a cheap, standard mouse into a high-productivity macro powerhouse without paying a premium for expensive hardware.
The best free mouse utilities are categorized below by operating system and specific use case: Best Free Choices for Windows Every Windows User Needs This Free Mouse Utility!