Student's progress tracking on programming assignments

In the area of programming assignment assessment the majority of works are focused on control and evaluation of the final submissions. We present an evaluation process and a system, which we are currently working on, for tracking students' behavior during the whole semester. The system stores increments in a source code and presents characteristics from gathered data in a graphical form. Spotted characteristics are: commit and code activity, workload, aggregated frequencies of code additions for the whole group of students, etc. The tool implementation is based on a free repository management system Gitlab.