← All shelves
Built on rented land
Their business lives inside somebody else's platform. Some got rich. Some got de-listed overnight.
63 teardownsEvery teardownFortressesEasy to copy. Won anyway.Numbers straight from a filingDoesn't scale. On purpose.Still here after 15 yearsOne-time money
123 Sheets
SaaS
VAT filing for people who refuse to leave Excel.
$1M/yr
Estimate · yearly · our estimate
⚠ Control low
HMRC owns the rails
HMRC owns the rails
★ The edge: HMRC killed the free VAT portal in 2019 — he sold the minimal bridge, not another accounting suite.
Open → full teardown→
BitsForDigits
Marketplace
Sell part of your SaaS — cash out, keep control.
$72K/yr
Stated · self-reported · pre-exit
⚠ Control thin
buyer pool owned by rivals
buyer pool owned by rivals
★ The edge: they turned a rich-founder move — Basecamp selling a stake to Bezos — into a self-serve marketplace.
Open → full teardown→
Bizness Apps
SaaS
DIY app builder for SMBs. Bootstrapped, sold $20M+.
$10M
Stated · ARR at 2018 exit
SMB-native-app demand later collapsed.
★ The edge: Raised just $100K, so a clean cap table let a PE firm buy 100% all-cash — no VCs to negotiate out.
Open → full teardown→
BlogToPin
SaaS
Auto-pins your blog to Pinterest for free traffic
$15K MRR
Stated · founder-stated (IH)
10-15% monthly churn — a leaky bucket
★ The edge: Connect a blog once and AI writes and pins forever — rivals like Tailwind still make you build each pin by hand.
Open → full teardown→
BlueNotary
Marketplace
Notarize documents online — matched to a live notary.
$7M
Estimate · ARR (2024 est., no VC)
⚠ Control low
commodity RON, price war
commodity RON, price war
★ The edge: Laws legalized online notarization in 45 states — BlueNotary bootstrapped in as the VC leader cut staff.
Open → full teardown→
Chatbase
SaaS
Custom AI support agents from your own docs.
$10M
Stated · ARR, bootstrapped 2026
Commodity feature; clones and OpenAI compete.
★ The edge: Shipped "ChatGPT on your data" weeks after ChatGPT itself; $1M ARR in 117 days, zero ad spend, no VC.
Open → full teardown→
Clear (ClearTax)
SaaS
India made GST filing the law. Clear became the rails.
$25M
Filed · FY24 rev, +93% YoY
Govt's free portal can commoditize filing.
★ The edge: When a govt forces millions to file taxes digitally, whoever ships the easiest compliant rails becomes default plumbing.
Open → full teardown→
CloudSpot
SaaS
Photo-delivery galleries pros sell prints through
$1.2M/yr
Estimate · 2024 revenue, est.
Commoditized galleries; free rivals abound
★ The edge: Founder shot weddings for a decade - the product speaks fluent photographer, and the community already trusts him.
Open → full teardown→
CookieYes
SaaS
The cookie banner the law made you add.
$523K
Estimate · est. ARR 2024 (Latka)
warn entry Low
banner is a commodity
banner is a commodity
★ The edge: A free WordPress plugin with 1M+ installs funnels sites into the paid consent platform.
Open → full teardown→
Coolify
Dev
Open-source Heroku you run on your own server.
$15.7K/mo
Stated · gross, self-reported
Just 5 people handle code, support, security.
★ The edge: Owns the self-hosting crowd's trust — open-source, no VC, no lock-in — the anti-Vercel a VC clone can't copy.
Open → full teardown→
Cyberleads
Data
Leads on startups that just raised, for agencies.
$500K+/yr
Stated · ARR, founder-disclosed
Copyable data, thin moat, high churn.
★ The edge: Built entirely in public: every MRR-milestone tweet was free marketing, so his audience compounded with the revenue.
Open → full teardown→
EmailOctopus
SaaS
The Ryanair of email marketing
$3M+
Stated · ARR · founder-stated 2023
Anyone can wrap SES; price is the only moat
★ The edge: A simple UI on Amazon SES: send a million emails for under $100, undercutting Mailchimp with no mail servers to run.
Open → full teardown→
eRank
SaaS
SEO keyword data for sellers Etsy keeps blind.
$2.6M
Estimate · est. ARR, self-funded
Control low
on Etsy's rented land
on Etsy's rented land
★ The edge: A free keyword tier gave data-starved Etsy sellers what Etsy hid, then upsold a slice at $6-30/mo.
Open → full teardown→
EverBee
Data
Estimates what any Etsy listing earns — live.
$5M
Stated · ARR (founder-stated)
Estimates only — Etsy hides real sales.
★ The edge: A free Chrome overlay that lives on Etsy and reveals the one number Etsy hides: estimated sales per listing.
Open → full teardown→
FeedbackPanda
SaaS
One-click lesson feedback for ESL teachers
$55K/mo
Stated · MRR at 2019 exit
All revenue rode on one platform, VIPKid.
★ The edge: Danielle was an ESL teacher herself: she felt the pain daily and had trust inside the teacher groups they sold into.
Open → full teardown→
FincenFetch
SaaS
The filing rails for whatever FinCEN mandates next.
$2M-5M
Estimate · est. ARR · undisclosed
Its whole market is one rule's political whim.
★ The edge: Built FinCEN filing rails before the law landed; 1,000+ CPA and law firms white-label it instead of DIY.
Open → full teardown→
Flusk
Dev
Security audits for Bubble apps — bought by Bubble.
$240K
Stated · ARR · 2024 exit
⚠ Control low
100% on one platform
100% on one platform
★ The edge: a self-serve product — you can't acquire a service, you can acquire a product.
Open → full teardown→
GrowthMentor
Marketplace
One flat fee, unlimited calls with vetted mentors.
$720K
Estimate · ARR, reported 2022
Control low
free supply can walk
free supply can walk
★ The edge: Most mentors work for free — so members get unlimited calls and GrowthMentor keeps the whole subscription.
Open → full teardown→
GummySearch
Data
Mined Reddit's complaints, sold them to founders
$35K/mo
Estimate · MRR at 2025 shutdown
Control low
lived and died on Reddit's API
lived and died on Reddit's API
★ The edge: One search box over 10,000+ subreddits — founders validate ideas in minutes, not weeks of scrolling.
Open → full teardown→
Hypefury
SaaS
Thread scheduling for X, born from one tweet.
7-figure revenue
Stated · founder-stated · not ARR
Depends entirely on X's API and pricing.
★ The edge: Focused only on X threads while Buffer/Hootsuite stayed generic. Bootstrapped, no VC, grown via build-in-public.
Open → full teardown→
iDenfy
SaaS
Identity checks you pay for only when they pass.
€6.0M
Filed · $6.5M · 2024 revenue · LT filing
Thin layer on a mandate; low pricing power.
★ The edge: Only KYC vendor that bills per approved check, not per attempt — cuts onboarding cost up to 70%.
Open → full teardown→
ImportYeti
Data
Find any company's overseas suppliers — free.
2M+ users
Stated · free + paid
⚠ Control low
$0 raised · about $1M est
$0 raised · about $1M est
★ The edge: the data was free all along — he made it usable where rivals charged $125–899/mo.
Open → full teardown→
Indifferent Broccoli
SaaS
Private multiplayer servers for survival gamers.
$988K
Stated · ARR (founder-stated)
Commodity; churns as each game's hype fades.
★ The edge: Bought a site already page-one for one game ($1,600/mo), then launched a host for every new title.
Open → full teardown→
I
InsuredMine
SaaS
The CRM layer agents add to their agency system.
$5M
Stated · ARR, founder-stated
Sits atop an AMS it doesn't own.
★ The edge: Bootstrapped on $40K. An India dev team owns all the code and ships 600-700 features a year legacy rivals can't match.
Open → full teardown→
Leadmore AI
SaaS
Reddit leads, minus the account bans.
$1M ARR
Stated · run-rate (self-stated)
Reddit can ban the managed pool at once
★ The edge: Rivals reply from your account. Leadmore posts from its own aged pool — a ban hits Leadmore, not you.
Open → full teardown→
Lemon Squeezy
SaaS
The merchant of record that files sales tax for sellers.
$1M ARR
Stated · 9 months after 2021 launch
Thin layer on Stripe · no owned rails
★ The edge: not a payments tool but a liability shield — it files every country's sales tax for you.
Open → full teardown→
MetaFilter
Community
The forum Google built, then nearly killed.
$380K/yr
Stated · 2020, community-funded
Built on Google traffic it didn't control.
★ The edge: Ads died overnight when Google's Panda update cut traffic 40%; 15 years of member goodwill funded the site instead.
Open → full teardown→
My AskAI
SaaS
AI support agent that plugs into Intercom or Zendesk
$40K
Stated · MRR · about $500K ARR
⚠ Entry low
crowded; incumbents bundle it
crowded; incumbents bundle it
★ The edge: Built on OpenAI's embeddings soon after launch, shipped in three weeks; 2 people run 75k chats/mo at 82% margin.
Open → full teardown→
Optmyzr
SaaS
Google's ad evangelist quit, then built the PPC tool.
$14.6M
Estimate · est. ARR (Latka, 2023)
A layer on Google Ads; Google can absorb it.
★ The edge: Fred Vallaeys was Google's AdWords evangelist for a decade. He left, then sold pros better Google Ads tools.
Open → full teardown→
P
PA Crunch
SaaS
Passive Instagram growth SaaS. Sold for $300K.
$18K MRR
Stated · at 2018 exit · 50% margin
Zero control; it all ran on Instagram.
★ The edge: Delegated to a 4-person team so it ran in about 3 hours a month — profitable, hands-off, and clean enough to sell fast.
Open → full teardown→
Pappers
Data
Free French company data. The paying 1% funds it all.
€0.49M
Stated · $0.53M · 2024 net profit (filed)
Moat is UX and SEO, not the data itself.
★ The edge: Made paywalled French company data free with far better UX; the 1% who buy the API and exports fund the free 99%.
Open → full teardown→
PDF.ai
SaaS
Chat with your PDFs - a $20K buy now doing $50K/mo.
$50K+/mo
Stated · MRR, founder-stated
Thin AI wrapper - cloned in a weekend.
★ The edge: He didn't build it - he bought a working AI toy for $20K, then used the audience his other SaaS already had.
Open → full teardown→
Pope Tech
SaaS
Bootstrapped shop rents the web's most-trusted scanner.
$770K
Estimate · est. annual revenue
Core WAVE engine is WebAIM's, not theirs.
★ The edge: Built the enterprise layer on WebAIM's court-referenced WAVE engine — rented credibility no ad budget can buy.
Open → full teardown→
Post Bridge
SaaS
Schedule one post to every platform, no bloat.
$35K MRR
Stated · about $420K ARR, stated
Thin layer over social APIs he can't own.
★ The edge: He hand-posted to five platforms daily to grow his own app — then sold the automation of that exact chore.
Open → full teardown→
RecordJoy
SaaS
A 'poor man's Loom,' flipped for about 1.7x.
$20K
Stated · sold on Acquire.com '22
No moat vs Loom and free recorders.
★ The edge: Sold within a month for $20K, about 1.7x the $12K buy split with a cousin — proof a clean micro-SaaS is liquid.
Open → full teardown→
Remote Rocketship
Marketplace
Free Google traffic, sold back to job seekers.
$6k/mo
Stated · MRR · self-reported
⚠ Retention low
seekers cancel once hired
seekers cancel once hired
★ The edge: Everyone bills employers to post jobs. He scraped 60k firms' listings free and charged the job seeker instead.
Open → full teardown→
Resellbot
SaaS
One dev owns the search result Poshmark resellers tap.
$756K/yr
Estimate · 2024 ARR (Latka est)
Automates platforms that ban automation.
★ The edge: Ranks #1 for 'Poshmark bot,' a buying-intent keyword rivals ignored, so customer acquisition is free organic search.
Open → full teardown→
Roll20
SaaS
Where 10 million play D&D without a table.
$4-16M/yr
Estimate · Est only — never disclosed
warn Control low
rides on D&D's IP
rides on D&D's IP
★ The edge: A $40K community Kickstarter turned into the default browser table for D&D — no install, just a link.
Open → full teardown→
Seats.aero
Data
The award-flight search engine airlines sued.
$1.5M ARR
Stated · end 2023 · founder
Airlines can block or sue the data feed.
★ The edge: A lone security researcher scrapes the award data airlines hide, and rents it back at $9.99/mo.
Open → full teardown→
sellerboard
SaaS
The net profit Amazon hides - for $19 a month.
$4-8M/yr
Estimate · est: 20K+ payers
100% dependent on Amazon's API and fees
★ The edge: The accurate net-profit number Amazon hides, priced at $19 so every small seller says yes.
Open → full teardown→
SEOTesting
SaaS
SEO A/B testing, powered by Google's own data.
$18K/mo
Stated · MRR, founder-stated 2023
Lives and dies by Google's Search Console
★ The edge: Built by an SEO for SEOs: turns Google Search Console's raw data into repeatable, client-ready A/B tests.
Open → full teardown→
SerpApi
Dev
The SERP API that quietly became AI's search backend.
$3M/yr
Estimate · Est. ARR (third-party)
⚠ Control low
rents its data
rents its data
★ The edge: A boring 2017 SERP-scraper is now the live-search feed for AI labs — pickaxes sold into the gold rush.
Open → full teardown→
smallcase
Marketplace
Stock baskets that trade as one, via your broker.
₹67cr
Filed · $8M · FY24 rev from ops
85.8% of revenue is a toll brokers can cut.
★ The edge: smallcase never became a broker. It's a neutral rail on top of every major Indian broker, tolling each basket trade.
Open → full teardown→
SocialBee
SaaS
The social tool sold by hand before it was built
$1M+ ARR
Stated · founder-stated (2023)
Crowded niche — incumbents copy every feature
★ The edge: Files posts into categories that auto-recycle, so a tiny evergreen library fills the calendar for months.
Open → full teardown→
SparkToro
Data
The moat was the founder's audience, not the code.
$1.5M
Stated · ARR · yr-2 (2022)
⚠ Scale capped
niche market by design
niche market by design
★ The edge: The founder arrived with a ready-made marketing audience, so 200 people sign up free every day - zero ad spend.
Open → full teardown→
StandOut CV
SaaS
A recruiter turned CV advice into the UK's #1 CV site.
£40K/mo
Stated · about $50K · MRR at exit, all via SEO
One channel: Google. AI now writes CVs free.
★ The edge: 10 years placing hires at Barclays and Deloitte made his CV advice ring true; 1,000+ SEO articles became the moat.
Open → full teardown→
Storecove
Dev
One API for compliant e-invoices in 30+ countries
$2-4M
Estimate · ARR (est., undisclosed)
Peppol access is commoditizing fast
★ The edge: Bet on Peppol in 2014, years before mandates. Now ERPs that must comply plug into one API instead of building it.
Open → full teardown→
Sudowrite
SaaS
The AI writing partner built only for fiction.
$1.8M
Estimate · ARR est.; profitable
Its core AI is rented from frontier labs.
★ The edge: The one creative niche most AI tools anger — fiction writers — served by founders who are published novelists.
Open → full teardown→
TaskMagic
SaaS
Made a no-code tool buyable, then took a 7-figure exit.
Mid-7-figure exit
Stated · sold on Acquire.com
Thin moat; grew on one-time lifetime deals
★ The edge: No-code automation for non-coders; recorded tasks become workflows. Sold on Acquire.com for mid-seven figures.
Open → full teardown→
TaxJar
SaaS
E-commerce sales tax a court made mandatory.
$20M
Estimate · ARR before Stripe (est)
Platform risk: Stripe absorbed the category.
★ The edge: Built pre-Wayfair. When the 2018 ruling made sales-tax collection mandatory, TaxJar was already the incumbent.
Open → full teardown→
Tebex
Marketplace
Let game servers sell in-game perks — for a 5% cut.
$5-7M
Estimate · est · 5% take, 2021
⚠ Control Low
rides games it can't own
rides games it can't own
★ The edge: he lived the pain as a server kid, then became the default payment rail before rivals showed up.
Open → full teardown→
Text Request
SaaS
Why can't you text a business? They fixed that.
$15M
Stated · ARR at exit (2024)
Built on Twilio; thin moat, crowded field.
★ The edge: Won a crowded texting market on focus and cost, from Chattanooga — then absorbed 20k orphaned Zipwhip customers.
Open → full teardown→
Tool Finder
Ad
Where 450k fans pick their productivity tools.
>$10K/mo
Stated · Founder-stated, 2026
Affiliate traffic hinges on Google and AI.
★ The edge: Fourteen years of hands-on reviews and a 450k-sub audience make each pick trusted before a vendor pays.
Open → full teardown→
Tweet Hunter
SaaS
Twitter growth tool, sold to its power user.
$100K MRR
Stated · at 2022 lempire sale
100% dependent on Twitter/LinkedIn APIs.
★ The edge: Built in public on X to 115K followers, so the audience that grew the product also included the buyer who used it daily.
Open → full teardown→
TypingMind
SaaS
The power-user UI ChatGPT forgot to build.
$30K/mo
Stated · avg/mo, founder-stated
A wrapper OpenAI could absorb overnight.
★ The edge: Wrapped ChatGPT's clunky default with the search, folders and bring-your-own-key its power users asked for.
Open → full teardown→
U
Userfeed
SaaS
Customer feedback, native to Intercom.
$50K ARR
Stated · at exit; sold 6-figures
All distribution rents Intercom's platform.
★ The edge: Lived in the Intercom App Store, so Intercom's own users were its ready-made distribution channel.
Open → full teardown→
Vacation Tracker
SaaS
PTO tracking built inside Slack, not bolted on.
$3M
Stated · ARR, founder-stated
Thin, cheap feature an HRIS can bundle free.
★ The edge: Built Slack-first: request and approve leave without leaving the chat app teams live in all day.
Open → full teardown→
Vendoo
SaaS
One upload. Ten marketplaces. Zero retyping.
$1.4M
Stated · 2020 revenue (reported)
Rides on marketplaces that can ban it.
★ The edge: Founder resold since 2007, built the cross-poster he needed, then grew via reseller YouTubers with the same pain.
Open → full teardown→
Visa List
Data
Free visa data. $22K/mo. One guy in Sydney.
$22K/mo
Stated · founder-stated, 2022
A Google update can halve everything.
★ The edge: He never sells the visa info - it's free bait that ranks on Google. The money is the traveler's next purchase.
Open → full teardown→
Wall Street Oasis
Community
Free finance forum that sells interview courses.
$300K/mo
Stated · founder-stated · 2020
⚠ Control low
rides on Google traffic
rides on Google traffic
★ The edge: A forum earns pennies on ads; he stacked a niche ad network + paid courses on the same audience.
Open → full teardown→
Wisesheets
Data
Institutional-grade stock data for $5 a month.
$400K-700K/yr
Estimate · est. ARR (private)
Rents its data from upstream APIs.
★ The edge: Sells the data inside Excel and Sheets, so investors never leave the workflow they already model in.
Open → full teardown→
Woodpecker.co
SaaS
The email hack they built for themselves went public.
$5.5M
Filed · 2024 revenue, official
A Gmail policy change can gut deliverability.
★ The edge: Sends cold email one-by-one from your own inbox with human-like pacing, so messages land in the inbox, not spam.
Open → full teardown→
Yardbook
SaaS
Free software for 20,000 lawn crews. 7-person team.
$1M
Estimate · 2024 ARR - Latka estimate
Free model caps revenue: about $1M in 8 yrs.
★ The edge: Hands lawn crews a full ops suite free, then earns on payment fees, a paid tier, and sponsored listings.
Open → full teardown→