Abstract In this paper, RTKLIB, gLAB and G-NUT open source precise point positioning software programs are used to process the 76 IGS stations by the use of static simulation of dynamic method in PPP models. The tropospheric delay and the position calculation results are compared with the reference coordinates and tropospheric product from IGS. The results show that standard deviation of troposphere calculated using different software can achieve cm-level accuracy, while RTKLIB can achieve STD better than 1 cm. In terms of coordinate accuracy, G-NUT needs longer convergence time than RTKLIB and gLAB to reach an absolute positioning accuracy. However, all three open-source software programs can achieve cm-level accuracy using kinematic positioning.Although the incomplete data preprocessing strategy in RTKLIB will cause a greater deviation in some stations, it can still get the highest accuracy; G-NUT has the same accuracy with RTKLIB horizontally, but the vertical resultsare poor. gLAB gets the largest deviations horizontally, but vertical accuracy is better than G-NUT.