CSIM algorithm for GPS trajectory similarity implemented in Java. More details can be found here: http://cs.uef.fi/mopsi/routes/grid/
If use, please cite this paper: Radu Mariescu-Istodor and Pasi Fränti. "Grid-based method for GPS route analysis for retrieval." ACM Transactions on Spatial Algorithms and Systems (TSAS) 3, no. 3 (2017): 8.