The present study compared the effectiveness of two online career exploration systems in increasing the career decision self-efficacy and decidedness of 960 students enrolled in a program for undecided freshmen students at a large public university. Results indicated that both systems led to significant increases in career decision self-efficacy and college major decidedness in these students. The CAPA system, based on an integration of Bandura's self-efficacy theory and traditional trait factor theory, led to proportionately greater increases in Career Decision Self-Efficacy Scale scores in comparison to FOCUS for the total group and for women. The systems were comparably effective with African American, Asian American, and White students. (Contains 4 figures and 4 tables.)