This paper presents TStore, a Trace-Based Management System that handles the storage, transformation and reusing of Traces. Traces have been of-ten stored without explicit structure. TStore is a web tool that allows anyone to store and reuse traces with their models from various applications. The trans-formation of Traces helps to move from a first simple interpretation (almost raw data coming from sensors) to the actionable knowledge level of abstraction. TStore provides predefined transformation functions as well as a customized transformation based on Finite State Transducers. Our experiments demonstrat-ed the efficiency of TStore to handle the storage requests. They show that batch operations are more efficient than sequentially adding traces to the system.