Free tool
Where your people actually post on Reddit
Pick a product category and the audience you want, and this returns a shortlist of subreddits worth reading before you post, each with a note on how that community treats self-promotion. It is a curated editorial list written by hand, not live Reddit data, so check the current rules yourself before posting.
Last reviewed 27 August 2026
Result
Communities shortlisted
8
7 match your stated audience directly
Shortlist
| Subreddit | Fit | Self-promotion posture |
|---|---|---|
| r/programming | Direct | Link led and strict. Original technical writing clears, product framing gets removed. |
| r/webdev | Direct | Large and practical. Check the sidebar for the current showcase thread before posting anything you made. |
| r/devops | Direct | Practitioners with real budgets. A tool post lands only when it answers an operational problem people already have. |
| r/selfhosted | Direct | Warm to open source and self-hostable builds, cold on hosted-only pitches. |
| r/opensource | Direct | Project announcements are on topic when the repository and licence lead. |
| r/experienceddevs | Direct | Career and practice talk. Promotion is off topic, so read here and post elsewhere. |
| r/coolgithubprojects | Direct | Exists to share repositories. Quiet, but the intent matches a launch. |
| r/startups | Adjacent | Promotion is confined to specific threads. Read the rules and use those threads. |
Before you post in any of them
- Read the rules and the sidebar in full, on the day you post. They change.
- Scan the last month of posts for a moderator comment about self-promotion.
- Ask one specific question. "Feedback welcome" gets ignored, "is step two of the pricing page confusing" gets answered.
- Disclose your affiliation in the post body, not in a reply after someone asks.
- Post from an account with real comment history, not one created for this.
- Do not paste the same text into several subreddits. Reddit's Data API terms describe posting identical or substantially similar content across subreddits as spamming activity.
With no history here, posting a link is the highest-risk move available to you. Comment usefully for a week or two first, then post.
This shortlist is editorial. We chose these communities by hand and wrote the postures ourselves. It is not live Reddit data, it carries no subscriber counts because those change constantly, and each subreddit's own rules override every line of general guidance here, including ours.
How this works
What the numbers mean.
- 01The dataset is a hand-maintained map of product category to communities, with a written note on how each one treats promotion. Nothing is fetched from Reddit at any point, so the page cannot tell you a live subscriber count or a rule change from last week.
- 02Your audience selection reorders the list rather than filtering it. Communities that match directly rise to the top, adjacent ones stay visible because the adjacent ones are often where the useful conversations are.
- 03The checklist changes with what you intend to post and how much standing you have. Posting intent and account history matter more to the outcome than which subreddit you choose.
Assumptions and limits
- There are no subscriber counts anywhere in this tool, deliberately. They change daily, a stale figure is worse than none, and size is a poor proxy for value.
- Rules and moderator tolerance change without notice. Verify in the subreddit before you post, every time.
- This is a starting shortlist, not a targeting list. Reading a community for a week tells you more than any list can.
Questions about this tool
Why are there no subscriber numbers?
Because they move constantly and a stale number is worse than no number at all. Size is also a poor guide to value: a small practitioner subreddit routinely outperforms a general one with two hundred times the members for a B2B product. If you need the count, it is on the subreddit itself.
What is the 1 in 10 rule, exactly?
It appears on Reddit's own help centre Reddiquette article as a widely used rule of thumb that only one in every ten of your submissions should be your own content. That same article describes itself as an informal expression of the values of many redditors, and the ratio does not appear in the Rules, User Agreement, or API terms. So it is neither Reddit policy nor folklore, and it is a reasonable discipline either way.
Can I automate posting to these communities?
Not casually. Reddit's Responsible Builder Policy requires you to request access and get explicit approval before accessing Reddit data through the API, and the Data API Terms require a separate agreement for commercial purposes. Automated cross-posting of identical or substantially similar content is expressly banned. Bots are allowed, but they must be registered and labelled.
Why was my post removed when I followed Reddit's sitewide rules?
Because there are two enforcement layers. Sitewide admins handle platform policy, and individual subreddit moderators adjudicate what counts as unwanted or spammy content in their own communities. A post that is perfectly compliant sitewide can still be removed by any subreddit, and that is working as designed.
How long should I wait before posting about my product?
Long enough that a moderator checking your history sees a contributor rather than a marketer. There is no published number for this and anyone quoting one is guessing. Practically, a few weeks of genuine comments in one community beats a day of activity spread across eight.
This tool is free and there is nothing to sign up for. If you would rather have the work done than calculate it, that is what Zway does.