TL;DR: Reddit drives a meaningful chunk of qualified traffic for B2B founders like me, but only if you post in the right places. Below are 60+ subreddits you can use for mentioning your startup, grouped by what you're actually trying to do (reach, feedback, growth tips, funding, etc.). Each row links straight to the sub and its rules. Read the rules.

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A quick note before you scroll

Reddit is one of two channels I lean on hard. The other is LinkedIn outbound with intent signals: Catching people the moment they're thinking about a problem you solve. That's what IbexAI does for you. If cold outreach feels like screaming into a void, that's the angle worth looking into.

—> Check it out here.

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But Reddit is the organic counterpart. Here's how I use it:

• SEO-friendly long posts with a discreet link to our website that keep ranking on Google months later.
• Short, useful posts that get upvoted. Your username and bio do the selling.
• Helpful comments under relevant threads, with a soft mention of our tool when it genuinely fits.
• (not tried yet) Targeted Reddit Ads to specific subs in this list to accelerate.

Now the list. I've grouped it by use case rather than by topic. Many founders post in the wrong category and wonder why nothing converts. Reminder: Read the rules before posting (they change frequently).

1. Big general communities (highest reach)

Start here if you want volume. These subs are large and broad. High ceiling, but also more rules and more competition for attention.

2. Founders & indie builders

Smaller, tighter, and a lot more forgiving when you talk about your own product. The signal-to-noise ratio is excellent.

3. Marketing, growth & sales