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I spent 18 months building the wrong thing. Here is the checklist I use now.
Search any niche and get the subreddits worth posting in, the connected communities your users overlap into, the posts that actually landed, and the redditors worth paying.
Discovery
Describe your product in plain language. subsmap ranks every relevant community by fit, size, real activity and how tolerant the mods are of self promotion, so you know where to start and where not to waste a post.
Overlap graph
Communities are connected by the people who post in both. The overlap graph shows the adjacent subreddits your audience moves through, computed from real commenter co-occurrence. This is where most of the untapped distribution sits.
What works
The top performing threads from any subreddit, sorted by what actually worked, with the format, length and posting time that carried them. Copy the shape of the post, not the content.
Top voices
The most influential redditors in any community, ranked by karma earned there, posting cadence and how often people reply to them. A ready made shortlist for paid posts, AMAs, collaborations or a quiet DM.
The data
The map is not a one time scrape. subsmap re-reads public Reddit activity daily, recomputes community overlap from commenter co-occurrence, and re-scores every subreddit, so what you see reflects Reddit as it is this week rather than last year.
Everything else
The map is the start. These are the details that decide whether a post lands or gets removed.
Every subreddit's posting rules parsed into plain answers: can you link, can you self promote, is there a karma or account age gate, how often are posts removed.
Activity by hour and weekday for the exact subreddit you are targeting, in your timezone, based on when top posts were actually submitted.
Group target subreddits into campaigns and take the whole list with you.
Get alerted when your product, your category or your competitor is mentioned.
See which communities a competitor is already posting in, and how it goes for them.
Track your own posts across every subreddit you target and see clicks, signups and comments per community, so budget and effort move to what works.
Stop guessing which community to post in. Start from the map, post where your customers already are, and learn from what has already worked there.
FAQ
Anything we have not covered here, ask us directly and we will get back to you the same day.
Reddit search shows you posts. subsmap shows you communities, ranked. You get fit scoring across millions of subreddits at once, the overlap between them, what format has historically worked in each, and who the influential posters are. That is a research project of several days compressed into one search.
Public Reddit posts, comments and community metadata. Nothing private, nothing behind a login. Overlap between communities is computed from public commenter activity across subreddits.
Community stats, top posts and rankings refresh daily. Historical post performance covers the last 12 months so seasonal patterns stay visible.
Following a subreddit's own rules is the only reliable protection, which is why subsmap surfaces those rules alongside every recommendation, including whether links are allowed, self promotion limits and karma gates. Read the rules, contribute before you promote, and post as a person rather than a brand account.
No. subsmap is research and targeting. You write the post, because posts that read like they came from a real person are the only ones that work on Reddit.
Founders launching without a budget, marketers who need channels that are not paid ads, agencies running Reddit for clients, and anyone whose next hundred users are already talking to each other in a community they have not found yet.
Search your niche, open the map, and see the communities worth your next post.
Browse the map without an account. No credit card.