A Common Tracking Software (ACTS) is a project that attempts to preserve the highly performant track reconstruction code from the first LHC era and prepares the code and concept for long term maintainability and adaption to future architecture. It is based primarily on the ATLAS Common Tracking Software, but has been decoupled to be detector and framework agnostic. ACTS supports several detector geometry backends and a plug-in mechanism for track parameterisation, Identification schema and measurement definitions. It attempts to provide a toolbox for track reconstruction including track propagation, track fitting, pattern recognition, such as a fast simulation module. Dedicated care is taken that the code runs in concurrent environment and complies with the C++14 standard. We present first test suites for different detector geometries, and results testing multithreaded test applications.