The goal of this work is to study the topic of decoding random linear codes using the Finiasz-Sendrier algorithm and and based on this knowledge develop an application that shows the process of this algorithm for further educational purposes. The algorithm is an improvement of the Stern algorithm, which it speeds up using multiple methods and tricks. Output of the work is an application showing the particular steps and values of the algorithm with the inputs chosen by the user, which helps the user understand this algorithm.