This article gives a brief overview of theoretical advances, computing trends, applications and future perspectives in parallel genetic algorithms. The information is segregated into two periods before and after the year 2000 and in all chapters. The second period is more interesting and of higher importance, because it highlights recent research efforts and gives some hints about possible future trends. That is why we devote much space to the second period. As there is no such an overview of the recent period of parallel genetic algorithms, we find our investigation to be important in many aspects.