The fastest-growing corner of Reddit: LLM users, machine-learning researchers, and data professionals. New AI tools get discovered, benchmar…
12communities
26.7Mmembers
Biggest: r/ChatGPT, r/MachineLearning, r/OpenAI
Every niche we cover, each with a guide to its communities — which are biggest, which are most active, and what their rules say about self-promotion. 27 niches, 363 communities, 1026.7M members.
The fastest-growing corner of Reddit: LLM users, machine-learning researchers, and data professionals. New AI tools get discovered, benchmar…
Biggest: r/ChatGPT, r/MachineLearning, r/OpenAI
Readers, language learners, exam preppers, and students. Recommendation threads here rank on Google for years, and education products have a…
Biggest: r/books, r/comicbooks, r/languagelearning
Resume reviews, interview prep, career switches, and remote work. High-stakes questions from motivated people — career services and edtech f…
Biggest: r/careerguidance, r/jobs, r/cscareerquestions
Reddit's automotive world spans everything from wrenching on project cars to brand-loyal owner clubs. These communities are where people ask…
Biggest: r/cars, r/formula1, r/motorcycles
Obsessive, gear-loving communities around coffee, espresso, tea, and homebrewing. Niche audiences with strong purchase intent and deep brand…
Biggest: r/Coffee, r/Homebrewing, r/tea
Crypto Reddit is loud, skeptical, and fast-moving. These are the established large communities where news breaks and projects live or die by…
Biggest: r/CryptoCurrency, r/Bitcoin, r/ethereum
Store owners comparing platforms, suppliers, ad costs, and marketplaces. If you sell tools or services to ecommerce businesses, your custome…
Biggest: r/ecommerce, r/dropshipping, r/EtsySellers
Style advice, skincare science, sneaker culture, and fragrance obsessives. Product-heavy communities where reviews and routines drive real p…
Biggest: r/MakeupAddiction, r/malefashionadvice, r/femalefashionadvice
Some of Reddit's most supportive communities live here: weight loss journeys, home gyms, running plans, and nutrition science. Health audien…
Biggest: r/Fitness, r/nutrition, r/strength_training
Home cooking questions, meal prep, baking science, and budget eating. Food communities are welcoming, visual, and huge — great for recipe si…
Biggest: r/food, r/EatCheapAndHealthy, r/Cooking
Communities devoted to spending less and buying better. Product recommendations here carry serious weight — a single 'buy it for life' menti…
Biggest: r/Frugal, r/BuyItForLife, r/minimalism
Reddit's largest audience by far. Beyond the mega-hubs, each platform and title has its own passionate community — and indie developers have…
Biggest: r/gaming, r/pcmasterrace, r/Minecraft
Renovations, woodworking, gardening, smart homes, and every trade in between. Highly practical communities where before/after posts and hone…
Biggest: r/DIY, r/gardening, r/woodworking
Where marketers trade what's actually working: SEO experiments, ad performance, email tactics, and agency war stories. Great for B2B product…
Biggest: r/socialmedia, r/marketing, r/SEO
Producers, engineers, and players across every genre. Gear questions, mixing feedback, and practice advice dominate — audiences with lifelon…
Biggest: r/Music, r/WeAreTheMusicMakers, r/Guitar
From pregnancy to toddlers, these communities run on empathy and practical advice. Parents ask specific product and sleep-deprived survival …
Biggest: r/Parenting, r/Mommit, r/daddit
Reddit's money communities range from careful budgeting to index-fund investing to high-risk trading. They are strict about self-promotion b…
Biggest: r/personalfinance, r/wallstreetbets, r/stocks
Dog trainers, cat people, fishkeepers, and reptile owners. Pet communities blend adorable content with serious care questions — pet brands a…
Biggest: r/cats, r/dogs, r/Dogtraining
Photographers, designers, illustrators, and 3D artists sharing work and critique. Visual portfolios and honest feedback are the currency her…
Biggest: r/itookapicture, r/drawing, r/photography
Millions of redditors work on habits, discipline, meditation, and getting more done. These communities reward genuinely helpful, experience-…
Biggest: r/productivity, r/Meditation, r/selfimprovement
Communities focused on earning outside a day job: freelancing, gig platforms, passive income experiments, and small online earners. High int…
Biggest: r/sidehustle, r/beermoney, r/passive_income
Major league fandoms plus hands-on outdoor communities: hiking, fishing, climbing, cycling, and survival skills. Passionate audiences with s…
Biggest: r/nba, r/nfl, r/soccer
The busiest founder hangouts on the internet. Idea validation, launch feedback, growth tactics, and honest failure stories — several of thes…
Biggest: r/Entrepreneur, r/business, r/smallbusiness
System administrators, security professionals, and PC builders. Practical, no-nonsense communities where hardware and software recommendatio…
Biggest: r/buildapc, r/techsupport, r/hacking
From budget backpackers to points-and-miles optimizers, Reddit's travel communities are where real itineraries get planned. If your audience…
Biggest: r/travel, r/TravelHacks, r/camping
From first lines of code to production framework debates, these are Reddit's core developer communities. Developer audiences are allergic to…
Biggest: r/programming, r/learnprogramming, r/webdev
Writers, bloggers, YouTubers, podcasters, and streamers comparing notes on craft and growth. Creator-economy tools and services find their e…
Biggest: r/youtube, r/writing, r/Twitch