Many Non-Catholic Christians believe in Sola Fide or Faith Alone, the idea that all one needs is faith alone for salvation and no good deeds or works are necessary to bring one to salvation.
Many misinterpret the Catholic churches teaching by thinking Catholics believe good works can save someone. What the Church actually teaches is that works come from faith, works can not replace faith. In other words, if you have true faith, that faith will naturally bring someone to doing good works. You can not have true faith without works. You can not claim to love Jesus Christ with all your heart and accept him as your personal savior, yet do nothing in his name.