About Similar groups finder
The similar groups finder is a free tool for discovering communities like one you already know. Paste a subreddit or a Facebook group and it finds other communities with similar topics, audiences and activity patterns, so one good community can lead you to many more.
How it works
Keyword searches only find communities whose names match your words. Starting from a community you already know works differently: the tool uses that community's topic and audience as the reference point and looks for others that share them.
This is especially useful when your niche goes by many names, or when the best communities have names that don't describe what they're about.
When to use the similar groups finder
Use it when you've found one community that works and want more like it. It's a good way to grow a list of places to listen, share content or recruit research participants, and to find smaller, less crowded alternatives to a big, busy community.
It also works across platforms: start from a subreddit or a Facebook group, whichever you know best.
Tips for better results
Start from a focused community. A niche subreddit like r/shopify gives sharper matches than a broad one like r/business. If the results drift off-topic, try a different starting community that is closer to your audience.
Run the tool a few times from different starting points and look for communities that keep showing up. Those are usually the core of your niche.
Building a community map for marketing
Most brands rely on one or two well-known communities and miss the dozens of smaller ones where their customers also talk. A wider map means more conversations to learn from and more chances to help people at the moment they need it.
Once you have your list, check each community's rules and tone before you participate. For subreddits, the subreddit intelligence tool shows the rules, top posts and activity in one place, which makes it easy to decide where to start.