0xbench is described as 'An integrated, comprehensive benchmark suite for Android: from system call (bionic) to Android frameworks. There are currently 16 included benchmarks' and is a Benchmark Tool in the OS & Utilities category. There are three alternatives to 0xbench for a variety of platforms, including Android, iPhone, Linux, Mac and Windows. The best alternative is Geekbench. It's not free, so if you're looking for a free alternative, you could try AnTuTu Benchmark or 3C Toolbox.
AnTuTu Benchmark is a free benchmarking app that helps users delve deeper into their Android devices through hard numbers and solid facts. Benchmarks include: User Experience (UX) - Gives each user a direct impression on smart device performance with detailed scores.