Top subreddits, ranked from a live crawl
The largest, busiest and fastest-growing communities in the Prowlo catalog. These are the subreddits we track — not a map of all of Reddit — and every number carries the date we captured it.
Fastest growing
Updated Oct 20
SEOTips101 is for bite-sized SEO tips, simple explainers, and real-world examples—covering Google Search, AI answers, content strategy, and link building. Ask questions, share what worked, and help others grow.
This subreddit is for discussions about coding using Claude Code or the Claude model. It summarizes the discussions of all popular posts on Claude subreddits related to coding using Claude and Claude Code
Training, recovery, and performance for lifters and athletes 30 and beyond. Building strength, preserving muscle, optimizing recovery, navigating slower healing, hormone shifts, and the science of performing better at 35, 45, and 55+. Share what's working. Ask what isn't. Evidence-based discussion welcomed. Vendor and product reviews allowed with proof. No bro-science, no fad-pushing, no "just push harder" advice. Whether you started lifting at 17 or 47 — you belong here.
Looking for the best subreddit for hot takes? Join us here, explore various topics, debates and posts, share your biggest hot takes today!
The Blood of Dawnwalker is a single-player open-world dark fantasy action-RPG with a strong focus on story and narrative. Created by Rebel Wolves.
I've seen a lot of other reddits about dating advice, and what someone should/shouldn't do, how to ask out girls/guys, etc. So i thought, why isn't there a sub for setting up dates between fellow people of reddit? So this is what thats for. Post who you are, age, and where you live, and a little about yourself, and see if there is anybody interested in going on a date!
For Indian teen Girls to connect, share experiences, seek advice, and discuss life and culture.
This is a trans sub except everyone here is awful and fucking sucks. Counting sub for 4tran memes. This place is a cognito hazard, consider muting the sub if you don't want it on your feed.
Welcome to Jodi Milan! A community designed to help Indians find serious, long-term marriage matches based on individual preferences and compatibility. Posts seeking hookups, casual dating, late-night chat, non-traditional marriage, open marriage, NSFW activities, job referrals, or any unrelated content are not permitted. Genuine users are always welcome, and we hope you find something meaningful here. 👰❤️🤵
A fun place where you can post (almost) anything! 🚫No 18+ Explicit Content.🚫 💢Read Rules!💢
Looking for a specific novel? Request it here and connect with readers who can help you find amazing stories.
Everything about 3D generation and Artificial Intelligence — news, updates, releases, comparisons, workflows, benchmarks, and the best community finds. Thoughts, ideas, insights, and discussions are welcome too.
Codex: A command center for agents. an open-source local coding agent that turns natural language into working code. Tell Codex what to build, fix, or explain, then watch it bring your ideas to life.
All discussions related to fantasy football. Don't be shy. Come on in with hot-takes, memes and stories.
Welcome to the OpenCode subreddit. OpenCode is a popular, free, open-source AI coding agent that integrates powerful AI models directly into your terminal, IDE, or desktop, allowing developers to write, refactor, debug, and explain code using natural language commands. OpenCode supports OpenAI, Anthropic, Gemini models as well as fully local models. Find OpenCode here https://opencode.ai/
Comunidade brasileira para discutirmos tudo sobre MicroSaaS. Como achar idéias, criar, desenvolver e manter software como serviço sem investimento externo (bootstrapped), feitos por uma única pessoa ou equipe pequena.
A home for content creators and tech companies to share UGC opportunities.
Have you ever wanted to feel like a little mouse, sleeping in a cozy and warm burrow while a storm is raging outside? Then this is the place for you! Come in and relax with us🧡
AI memory and context engineering - ability of artificial intelligence to store, retrieve, and effectively use information across interactions. It allows AI systems to maintain context, learn from past exchanges, and build knowledge over time. With proper memory systems, AI recognizes patterns from previous conversations, and provide more personalized, consistent, and accurate responses rather than treating each interaction as completely new. Supported by: www.cognee.ai
This community is dedicated to discussions about the Model Context Protocol (MCP), an open standard facilitating secure, two-way connections between data sources and AI-powered tools. Here, members share MCP server implementations, integration strategies, and best practices. Whether you’re a developer, researcher, or AI enthusiast, join us to collaborate, innovate, and advance the MCP ecosystem.
This is for people to discuss the languages they are learning and any difficulty in learning them. It is also to help others learn those languages. (If you are bilingual/multilingual, please stay on this subreddit to help anybody learning your language).
READ THE RULES BEFORE POSTING! Welcome to the International Biohacking Community Subreddit by Josh Universe, a community dedicated to exploring the world of biohacking and transhumanism and increasing human potential through science and technology. Whether you're interested in enhancing cognitive function, improving performance through peptide research, extending your lifespan, or delving into cutting-edge technologies like CRISPR or gene therapy this is the place to share knowledge and ideas.
An unofficial community dedicated to the minimalist Pi coding agent. Adapt pi to your workflows, not the other way around, without having to fork and modify pi internals. Join the PI revolution now!
This is the official subreddit for https://www.chillinterview.com/
A space for sharing office horror stories, advice on how to quit, & suggestions for how to earn a living outside a cubicle.
Luddites, Decels, & Anti-AIs aren't welcome! We're an AI-Positive, Techno-Accelerationist High-Fidelity Epistemic Enclave. We exclude anyone advocating to slow, stop, or reverse tech progress, AGI/ASI development, The Singularity, or humanity's growth. We're the unapologetically Pro-AI alternative to r/singularity, r/futurology, r/artificial & r/technology which are becoming filled with Luddites, Techno-Decelerationists, Techno-Reactionaries, & Anti-AIs.
A place to find and share jobs, scholarships, hustles, and life-changing opportunities in Kenya.
The red-headed step-children of the #1 Fantasy Football Podcast and their hosts Andy, Mike and Jason. Team up with other members of the FootClan to talk all things Fantasy Football! (This is an un-official, fan-moderated sub. The Ballers themselves are not involved.)
Unofficial community for discussions, questions and reflections about the Google Play Console, and about issues of publishing and promoting apps. Some example are publications, rejections, app permissions, rating, policies, updates, subscriptions and testing helping each other as developers or publishers
Everything you need to know about SEO, Sharing information, ideas, issues, problem, and solution No Promotion, Only Real experience, And Applied advices
r/Founder is a support network for budding and established Founders. We are in need of active mods! Please PM if you are serious about moderating and are excited about /r/founder! Remember, r/Founder is a restricted community. If you want to be a part of r/Founders simply message a mod! Please follow the r/Founder rules! 1. Restricted to actual founders (PM a mod to be approved) 2. Please list your company in your flair. 3. Focus on personal startup conversations: possible p
For Redditors over 30 looking to make new friends their age.
resellpur.com Official channel of Resellpur app. How Resellpur is different from oOLXxx or other market place? Pick up to delivery facilities. so that you can keep doing Netflix n chill. Manual matching of products before shipping. so that nobody sells you nokia 3310 in the name of iPhone 16. Online escrow payments. Your amount is safe with us. Invoices for proof of ownership transfer. We are startup.. your help is deeply appreciated. ;)
Welcome to CatThings 😻 your daily dose of everything cats. Memes, chaos, cuteness, random facts, weird habits, and those “why are they like this?” moments. If it’s something a cat would do, you’ll find it here 😼
“The purpose of life is a life of purpose.” r/MenOfPurpose is a brotherhood for men who believe the purpose of life is a life of purpose. We choose direction over drift and meaning over comfort, growing stronger together through discipline, self-mastery, and shared accountability. Whether you’re searching for direction or refining your path, you’re welcome here. Join us to learn, contribute, and grow alongside men committed to living with intention.
Oil, gas, seismic science, engineering, and cool pictures of rigs. Everything you need to know about exploration, recoverable assets and pipelines. Posts must be on topic,directly about the oil industry. General Iran war topics go to r/geopolitics r/credibledefence etc
A place to discuss all things 3D Printing related! This sub is community driven and aims to be a place to express ideas and grow together in this amazing hobby. Happy printing!
Welcome to r/BangaloreSocial, This will be a place where folks can introduce, share common interest. Please verify the genuineness of the people you could be meeting through this platform to avoid scams, theft or any other harm.
Showing 50 of the 5,403 communities Prowlo tracks — the catalog grows daily.
Read-only · Human-in-the-loop
Prowlo never posts for you
What this list is, and what it isn’t
There are over a hundred thousand active subreddits. This page ranks the ones in the Prowlo catalog — currently 5,403 communities, growing every day as users add Watchers and our discovery pass finds new ones. It is not a complete census of Reddit and we are not going to pretend otherwise, because a ranking is only as good as the freshness of what sits behind it.
What you do get is numbers with a date on them. Every community here is re-checked on a rolling schedule through our own data pipeline, and every ranking states when it was captured. That matters more than it sounds: most “top subreddits” lists on the web are copies of a scrape that stopped running years ago, and several of the tools that produced them broke for good in May 2026 when Reddit started returning 403 to unauthenticated requests.
Largest, most active, fastest growing
Largest sorts by subscriber count. It is the ranking everyone asks for and the least useful one for deciding where to spend your time — subscriptions accumulate forever and never expire, so the number measures history rather than activity.
Most active sorts by posts per day sampled from each community’s newest posts on Reddit — the real span those posts cover, not a rounded window. This is the ranking to look at if you are choosing communities to participate in: it tells you where conversation is actually happening, and how fast the front page turns over.
Fastest growing compares each community’s current subscriber count against the nearest snapshot around 30 days back. It needs real history to exist, so it stays gated until we have it rather than extrapolating from a few days of data.
The size filters exist because ranking a 5,000-member community against r/AskReddit is meaningless. Filtering to 10K–100K is where most of the genuinely useful communities for founders and marketers live — big enough that people are reading, small enough that a good answer stays on the page for more than an hour.
Don’t pick your subreddits from a top-N list
This page is useful for orientation and for settling arguments about which community is bigger. It is a bad way to choose where to post. The largest communities are also the most saturated, the most heavily moderated, and the ones where every competitor in your category has already tried the same thing. A comment in a subreddit posting a thousand times a day is visible for minutes.
Start from your niche instead. Describe your product in the subreddit finder, check each match’s activity and promo tolerance, then expand the shortlist with shared-audience neighbors. Watch the ones that survive that filter and let your agent monitor them over MCP — where these rankings are a tool call away too: catalog_top_subreddits, free.
Frequently asked questions
What is the biggest subreddit?
Across Reddit as a whole, r/funny, r/AskReddit and r/gaming have traded the top spot for years, each with tens of millions of subscribers. The ranking on this page is narrower and more honest about it: it covers the communities in the Prowlo catalog, ordered by the member counts from our own crawl, so the numbers carry a capture date instead of being copied from a years-old scrape.
How many subscribers does r/AskReddit have?
It is one of the handful of default-tier communities in the tens of millions, and we are not going to quote you a precise figure we have not measured. If r/AskReddit appears in the list above, the number shown is what our own crawl recorded, with the capture date next to it. Raw size is also the least useful thing about it: a comment in a subreddit that posts thousands of times a day stays visible for minutes.
What does "most active" rank by?
Posts per day, sampled from each community's own newest posts on Reddit — the real span those posts cover, not a rounded window — with subscriber count as the tiebreaker. Samples older than two weeks are treated as unmeasured, and unsampled communities sort last. It is a much better guide than subscriber count to whether a community is alive — plenty of million-member subreddits post less than a hundred-thousand-member one.
Why is fastest-growing sometimes unavailable?
Growth rankings need at least 30 days of our own snapshot history for a meaningful number of communities. Rather than compute a growth rate from two points a few days apart and present it as a monthly trend, we show you the date tracking started and ask you to come back. It is the same reason every growth figure on the site is labelled with its real day-span.
How many subreddits does Prowlo track?
5,403 active communities, and the catalog grows daily as users add Watchers and our discovery pass finds new ones. NSFW, private, banned and unreachable subreddits are excluded by design, so this is not a complete map of Reddit — it is the slice we can crawl reliably and keep current.
Can my AI agent read these rankings?
Yes. The same rankings are exposed through Prowlo's MCP server as catalog_top_subreddits — largest, most active, or fastest growing, filterable by size band, free and unmetered. Connect your agent to api.prowlo.com/mcp and it can browse the field, vet a candidate with catalog_get_subreddit, and start watching it in one conversation.
How do I find subreddits for my own niche?
A top-N list is a poor targeting tool — the biggest communities are the most saturated and the hardest to be useful in. Use the subreddit finder instead: describe your product or audience and get matched to the communities that discuss it, then filter by posting activity and promo tolerance.
More free Prowlo tools
Subreddit Finder
Find subreddits by describing your product
Similar Subreddits
Discover related communities
Subreddit Stats
Live stats for any subreddit
Reddit Search Builder
Operators, users, flair and dates
AI Writing Checker
Spot the tells before you post
Comment Humanizer
Make AI comments sound human
Reddit MCP Server
Give your AI agent Reddit access