Formal:
* 不客气 (bù kè qì): This is the most common and polite way to say "you're welcome". It literally translates to "don't be polite".
* 不用谢 (bù yòng xiè): This means "you don't need to thank me".
* 没关系 (méi guān xì): This means "it's nothing".
Informal:
* 没事儿 (méi shìr): This is a casual way to say "no problem".
* 客气 (kè qì): This means "you're welcome" but can be used in a more informal setting.
Other options:
* 不用担心 (bù yòng dān xīn): This means "don't worry".
* 很高兴能帮到你 (hěn gāo xìng néng bāng dào nǐ): This is a more elaborate way to say "I'm glad I could help you".
The best option to use will depend on the specific situation and your relationship with the person you are speaking to.