Here are a few other options, depending on the context:
* "Não tem problema" (literally "there is no problem") - More formal and direct.
* "Sem problemas" (literally "without problems") - More casual and friendly.
* "Tudo bem" (literally "everything is okay") - Can also mean "no problem" in certain contexts.
The best choice will depend on the situation and your relationship with the person you are speaking to.