Jews believe that the messiah is yet to come. Christians believe Jesus was the messiah. Muslims believe that Jesus was a prophet (but not the messiah) and that Muhammad was a "better" prophet. They all believe in a single creator-god and an eternal afterlife, however there's a lot of different groups that believe different things about how this works. Protestants e.g. believe that you go to heaven as long as you believe in Jesus. Catholics believe that you go hell unless you confess and atone for all your sins. There's dozens of sub-religions and cults in all religions who are more or less extreme than others.

Buddhism is more a philosophy than a religion but they believe that you're reborn over and over.