The success and failure of software projects have been discussed in literature for many years. Research findings do not agree with one another given different types of projects, products and cultures that have been investigated. This research examines different perceptions about what effect various factors have on software project success among different cultures, namely Australia and Sweden. Our findings indicate that there are differences of certain factors effect on software project success across various cultures. Furthermore, software developers from both countries agreed that “satisfied customer” is the most important factor for software product success.