list active mega chat rooms

As of my last knowledge update in October 2023, I can't provide real-time information about active mega chat rooms or specific platforms. However, I can suggest a few popular platforms where large chat rooms and communities often form. You can explore these to find active chat rooms that interest you:

**Discord**: A popular platform for communities, gaming, and interest-based groups. Many servers host large chat rooms.

**Reddit**: While not traditional chat rooms, various subreddits have active discussions and community interactions.

**Telegram**: Known for its channels and groups, Telegram hosts a variety of large communities on different topics.

**Slack**: Primarily used for professional communication, but many public slack communities exist around various interests.

**Facebook Groups**: Many large groups on Facebook focus on specific interests, where members can chat and share content.

**Mighty Networks**: A platform designed for community building that includes chat functionalities.

**WhatsApp Groups**: While generally smaller, some have large member groups focusing on specific topics.

For real-time information on active chat rooms, check out the platforms directly or look for community recommendations online.