Find the subreddits for your topic
See where people talk about it, how big each community is, and what its rules say about mentioning your own product. Free, no account needed.
Questions about finding subreddits
- How does the subreddit finder choose communities?
- It asks Reddit's public search which communities match your topic and leaves out adult and private ones, so you see the public places where the topic actually comes up.
- What do the self-promotion labels mean?
- We read each community's posted rules and flag whether they ban promotion or links, allow them with conditions such as karma, flair or a weekly thread, or don't mention them. Moderators can still remove anything, so read the full rules before you post.
- How do I join a subreddit without getting banned?
- Use one account per person, read the community for a few days first, and answer questions without mentioning your product. Moderators expect most of your comments to be plain help, and they remove near-identical comments posted across threads.
- Is the finder free?
- Yes. No account is needed, with a small daily limit to keep it fair. The full product adds thread discovery, drafts written for human review, and AI answer tracking.
- Why do links open on old.reddit.com?
- Old Reddit loads fast, shows a community's sidebar rules beside every post, and has a plain comment box, which makes reading the room and posting by hand easier.