Subreddit Finder

How to find subreddits for any topic

Reddit has more than 100,000 active communities, and its own search is weak at finding them. The finder above works two ways. Type a subreddit you already like and it returns similar communities. Describe a topic, a niche or a product and it returns the communities where that audience talks. Either way you get up to 8 public, safe-for-work subreddits, each with one line on why it fits.

It combines Reddit's own subreddit search with an AI that knows which communities share an audience, then ranks the candidates against what you typed. Only communities that exist and are public make the list.

How to find similar subreddits

With the finder. Type the subreddit's name, for example r/startups, and run it. The results are communities with the same kind of members, not the same name.

By hand. A few signals point to related communities:

• The sidebar and the wiki. Many subreddits list related communities in their "About" section or wiki.
• Where the active members also post. Open the profiles of a few regular commenters. The communities that come up again and again share the audience.
• Crossposts. A post shared between two subreddits shows that their topics attract the same people.
• r/findareddit. Describe what you want and the community answers. It is slower, but the suggestions come from people who use those subreddits.

Some tools map subreddits by user overlap: how many people comment in both. That is useful for big communities, and less for small ones, where there is not enough overlap to measure.

How to search for a subreddit on Reddit

On Reddit, type your topic in the search bar and open the Communities tab. The results are ranked by name match more than by relevance, so a small, active community with a different name can be missing. That is where describing the topic in the finder above helps.

To search inside one subreddit, open that subreddit and use its search bar: Reddit limits the search to that community. You can also type subreddit:name followed by your keywords in Reddit's search. To search every post on Reddit for a keyword, with results grouped by subreddit, use our free Reddit Search.

Before you join: is the subreddit alive?

A good match on paper can be a dead community. Check three things before you spend time there:

• Activity. Look at the dates and comment counts of the newest posts. A subreddit where the latest posts are weeks old, or get no replies, will not see yours either. The Subreddit Activity Checker gives you the answer in one step.
• Rules. Many communities ban links, self-promotion or new accounts. Read them first, or run the Subreddit Rules Checker.
• The kind of posts. Questions, stories, memes, news: the posts that already work tell you what the community wants.

Finding subreddits for your business

For a product, the biggest subreddit is rarely the best one. In a large, general community, your reply competes with hundreds of others and the readers have mixed needs. In a niche community, the readers share the problem your product solves, and regular contributors get recognised quickly.

Look for communities where people ask for advice and recommendations. Those questions are the natural place for a helpful answer, and for a mention of your product when it fits.

Picking the subreddits is step one. Step two is catching the right threads inside them without checking Reddit all day. A Reddit monitoring tool watches your keywords across these communities and alerts you when someone asks for what you build.