The Reddit communities, podcasts and sites that matter for B2B brands

A plain directory of the places we actually work: the subreddits where buyers ask for tools, the shows that interview Reddit marketing founders, and the newsletters and directories that decide who gets cited. Every link below was opened and checked on 3 November 2026.

Checked 3 November 2026

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Where B2B, SaaS and startup buyers ask

These are the communities where someone describes the problem you solve before anyone has heard of you. We read them daily and answer where it genuinely helps.

  • r/SaaS (836K members) — The main SaaS founder community: churn, pricing, first customers, channel questions. Promotion is limited, so useful answers come before any link.
  • r/startups (2.1M members) — Huge and heavily moderated — self-promotion is banned. Feedback threads and hiring posts are where real conversations start.
  • r/smallbusinessowner (59K members) — Owner-operators comparing agencies after bad experiences. Honest, blunt, and a good place to learn what buyers fear.
  • r/indiehackers (199K members) — Bootstrapped builders sharing revenue and channel results. Rules allow one self-promotion post, with the required flair — nothing more.
  • r/microsaas (223K members) — Small teams and solo founders. Good for early-stage product feedback and candid channel talk.
  • r/SideProject (886K members) — Launch and feedback culture. Great for learning what makes people click, poor fit for polished B2B positioning.
  • r/saasbuild (57K members) — Builders in the middle of shipping. Smaller, so one genuinely useful comment can carry a thread.
  • r/B2BSaaS (31K members) — Explicitly B2B. Low volume but high relevance — enterprise buyers, sales cycles, procurement questions.
  • r/Solopreneur (79K members) — Solo operators choosing tools and channels. Useful for understanding the low-budget end of your market.
  • r/EntrepreneurRideAlong (738K members) — Long-form build-in-public stories. Detailed posts do well; thin self-promotion does not.
  • r/Entrepreneur (5.3M members) — Massive and noisy. Reach is easy, relevance is not — worth it only for broad, genuinely useful answers.

Where marketers compare agencies and tactics

This is where a buyer asks 'is this agency legit?' or 'has anyone actually got results on Reddit?'. Reputation is won or lost here, not on your own website.

  • r/DigitalMarketing (467K members) — Agency-vetting happens here: 'are Reddit marketing agencies legit or mostly spam farms'. Answers need receipts.
  • r/marketing (2.0M members) — Broad practitioner community. Useful for channel debates and benchmarking, rarely for niche tool talk.
  • r/b2bmarketing (104K members) — Professional B2B discussion with self-promotion banned. Lead-gen and ABM questions are constant.
  • r/SaaSMarketing (36K members) — SaaS-specific marketing. Mentions are tolerated when relevant and helpful, and blog posts must carry their substance in the body.
  • r/GrowthHacking (161K members) — Channel experiments and 'what actually worked' threads. Rules expect roughly 100 community karma before you share your own content.
  • r/productmarketing (35K members) — Positioning, pricing and launch questions from in-house PMMs. Small, senior and worth reading carefully.
  • r/SEO (519K members) — Where 'Reddit SEO' and AI-overview questions get asked. Good place to see what buyers believe about search right now.

Fintech and AI communities

The two categories where being named in a thread is worth the most — and where a wrong mention costs the most.

  • r/Fintech (95K members) — Operators, compliance people and founders. Skeptical of vendors, which makes an earned recommendation valuable.
  • r/AI_Agents (473K members) — Builders choosing between AI tools and stacks. Fast-moving, with frequent 'what does everyone actually use' threads.
  • r/ArtificialInteligence (2.0M members) — The big general AI community. News-driven, so relevance windows are short but visibility is high.
  • r/ChatGPT (11.7M members) — Where people test and complain about AI answers. Useful for watching how models describe brands and categories.

Reddit research, data and platform craft

Where original Reddit data is welcomed rather than tolerated. This is also where our own timing study was pre-registered before results were published.

  • r/TheoryOfReddit (197K members) — Serious discussion of how Reddit itself works. Substantive posts only, and AI-written posts are banned.
  • r/dataisbeautiful (21.8M members) — The biggest data-viz community on the site. Original [OC] posts must state their data source and tools.
  • r/redditdev (87K members) — API and scraping developers. The right audience for a method write-up or an open dataset.
  • r/redditmarketing (2.4K members) — Small, and dedicated to the discipline itself. Self-promotion only where it adds value, with affiliation disclosed.

Podcasts that cover Reddit marketing

Newsletters, guides, directories and tools

Questions about this list

Which subreddit should a B2B SaaS brand start with?

Start where the buying conversation already happens, not where the community is largest. For most SaaS brands that is r/SaaS and r/B2BSaaS for founder questions, r/b2bmarketing and r/SaaSMarketing for channel debates, and r/smallbusinessowner when the product is for owner-operators. We check each one's rules before writing anything.

Can I just post about my product in these communities?

Usually no. r/startups and r/b2bmarketing ban self-promotion outright, r/indiehackers allows one product post ever with the right flair, and r/GrowthHacking expects roughly 100 community karma first. Where mentions are tolerated, they have to be relevant and add value. Posting anyway gets threads removed and accounts banned.

Do these member counts change?

Yes, constantly. The figures here were read from public subreddit stats trackers on 3 November 2026, so treat them as rough size, not a live counter. Member count is a poor guide to how active a community is: r/redditmarketing has only a few thousand members but is entirely on-topic, while several multi-million-member communities rarely discuss any specific product.

Why list podcasts and directories, not just subreddits?

Because discovery is not one channel. A buyer might find you through a thread, a show interview, a Clutch review or an agency roundup that ranks itself first. Each of those needs something different: a podcast needs a guest pitch, a directory needs client reviews, and a roundup needs an email to the author with something new to say.

Does Thredly appear on these shows or in these lists?

Not yet — these are the shows that interview Reddit marketing founders and the lists that rank Reddit agencies, gathered as targets to pitch and get listed in, not as past appearances.

How do you decide which communities are worth working?

With a Reddit Reality Check: we look at where your brand is already mentioned, which communities your buyers actually ask in, what each community's rules allow, and where a competitor is being recommended without you. That tells you which of these pages are worth your time before any posting starts.