SaaS Startups

Follow Up Boss is a vertical SaaS CRM built specifically for real estate agents to manage leads from platforms like Zillow and Redfin. Founded by Dan (from Australia, based in Wyoming) 12 years before exit, the company took 4 years to reach $100k MRR with just 11 employees, bootstrapped entirely through Facebook group engagement and word-of-mouth. The company sold for $500 million ($400M cash upfront + $100M earn-out), demonstrating the power of patient, niche-focused founder persistence and organic growth.

Jenny AI is an AI-powered writing assistant for college students, founded by David Park. Started at $2K MRR in 2021, it grew to $300K MRR ($3.6M ARR) through strategic community building in Facebook groups and viral marketing on TikTok. The company was offered $3M but rejected it, now valued at $10-15M.

Syed Balkhi bootstrapped a billion-dollar portfolio empire centered on WordPress and related SaaS products without raising external capital. His strategy leverages what Andrew Wilkinson calls 'barnacle on the whale'—becoming deeply embedded in growing ecosystems like WordPress, QuickBooks, and Xero. His portfolio now generates over $100M in annual revenue and includes investments in companies like Seahawk Media (productized WordPress development services) and positions in open-source projects.

37signals is a 25-year-old self-funded software company built on the principle of profitability, high margins, and independence. Founded by Jason Fried and David Heinemeier Hansson, the company generates tens of millions in annual profits and maintains over 100,000 paying customers across multiple products including Basecamp, HEY, and their new ONCE line of one-time-purchase software. They've achieved this without external investment (except for shares sold to Jeff Bezos in 2006), aggressive marketing, or traditional goal-setting—instead operating with a focus on craftsmanship, low costs, and thoughtful product philosophy.

Co-Fertility is a marketplace that bundles egg freezing with egg donation to solve the affordability problem in fertility services. By offering free egg freezing to women who agree to donate half their eggs, and charging $13,700 to recipients seeking eggs, the company creates a two-sided marketplace addressing a growing market (20,000 US women froze eggs in the prior year) with a controversial but strategic business model designed to generate earned media.

Umax is a viral mobile app that uses AI to rate users' physical attractiveness and provide personalized grooming and fitness advice to help them improve their appearance. Founded by an entrepreneur who observed the lookmaxxing trend on Reddit, the app has achieved 3.5 million downloads with 5,000 new signups per day and is generating $6M ARR through a $3.99/week subscription model, capitalizing on the growing cultural shift of men investing in personal aesthetics.

GeoGuessr is a game where players guess random locations based on Google Street View imagery. Launched in 2013 by a Swedish software engineer as a side project, it grew slowly until the pandemic hit in 2020, when a paywall was introduced after Google increased API costs 14x. Revenue exploded from $467k in 2019 to $21M in 2023 with $11M EBITDA, driven by viral TikTok and YouTube creators, and now has 50M registered users and 50 employees.

Support Shepherd is an offshore staffing SaaS platform founded by Marshall Haas around 2020 that helps e-commerce and service businesses hire skilled talent from Latin America and the Philippines at significantly lower costs. The company grew to a $52 million valuation within four years, with explosive growth after audience co-founders Sean Perry and Nick Huber joined as equity partners. In 2024, Nick Huber acquired a majority stake for $29.7 million, demonstrating the power of the 'audience co-founder' model in B2B SaaS growth.

Sean is the founder of Right of Passage, a writing education company. After being laid off from an advertising agency where he was criticized for weak writing, he spent 2-3 years learning to write and building an online audience. His writing went viral (including a 20M-view thread on Clubhouse), and people began requesting he teach them writing skills, which led to creating Right of Passage. He's since become known for deconstructing storytelling frameworks like 'intention and obstacle' (from Aaron Sorkin) and the 'five-second moment of change' (from Storyworthy).

Price Satellite is an SEO-driven comparison tool built by 14-year-old Isaac that helps luxury travelers identify price differences for high-end brands across countries, accounting for VAT and currency conversion. Launched recently with around 30-50 daily visitors from organic search, the site leverages AI for web scraping, product categorization, and descriptions. Isaac's monetization strategy combines Google Ads with affiliate partnerships from reseller platforms like The RealReal.

Peter Rahal co-founded RX Bar in 2012 with $5,000 of his own money (plus $5,000 from co-founder Jared) in his mom's basement in Chicago. By identifying CrossFit as an underserved distribution channel with high velocity (80 bars/week vs. 1-4 in convenience stores), he scaled to $2M, then $7M, then $160M+ in revenue within 5 years before selling for $600M. A strategic rebrand emphasizing simple, whole-food ingredients (three egg whites, two dates, six almonds, four cashews) helped him cross into mainstream retail. Now he's launched David Bar, a protein-dense alternative with 26-27g protein and ~150 calories.

Oasis is a freemium water quality app founded by Cormac that aggregates free government water testing data and makes it easily accessible. The app started at $10k/month revenue and has grown to $40k/month ($480k ARR) by creating viral TikTok videos about water contaminants. Users pay $45-50/year for detailed reports and independent testing data, while the company earns affiliate revenue from water filter recommendations.

Christina Cacioppo left her role at Union Square Ventures to teach herself to code, spending two years building 35 failed projects before joining Dropbox. At Dropbox, while working on Paper, she encountered security and compliance (SOC 2) requirements that blocked product launches—a problem she realized startups faced without dedicated security teams. She validated the idea using just an Excel spreadsheet with early customers, then built Vanta into a multi-billion dollar compliance software company through word-of-mouth, founder networks, and podcast advertising.

Ryan Peterson built Flexport into a multi-billion dollar logistics company after experiencing firsthand the pain points of freight forwarding and customs brokerage while running a scooter/motorsports importing business. Before Flexport, he bootstrapped ImportGenius, a profitable search engine for shipping manifests that still generates millions in EBITDA, demonstrating his ability to extract value from public data and build sustainable businesses.

Gym Launch was born when Alex Hormozi pivoted from physically executing gym turnarounds to licensing his system to gym owners. After initial struggles with payment processing and refund fraud that nearly destroyed the business, Alex developed a licensing model where he taught gym owners his sales system for $6,000-$10,000, allowing them to fill their own gyms. The business achieved extraordinary growth, reaching $6.8M in topline revenue and $3M in profit in the first full year (2016), then $26M in revenue with $16M in EBITDA the following year.

AUX Insights is a private equity-focused consulting business that provides marketing due diligence and value creation services. Started by Jesse after recognizing PE firms needed expert analysis on digital marketing (Facebook, Google, Pinterest ads) when evaluating company acquisitions, the business reached $5M ARR in its first year by charging $50,000/week for consultant teams—positioned as 75% cheaper than McKinsey/BCG but with superior practical expertise in digital marketing.

Third Web is a web3/blockchain developer platform founded by Furqan Rida that has built AI agents to automate business workflows. The company deployed 8-10 AI agents throughout their organization, including a sophisticated signup agent that researches inbound customers, identifies their company information, and sends personalized outreach emails. With 37 employees, Rida estimates the AI agents make the company feel like 80 people, demonstrating how a small team can achieve outsized productivity through AI automation.

Thistle is a subscription-based healthy meal delivery service founded by Sheil Kapoor, his roommate, and his sister. The company solved key inefficiencies in existing meal delivery services—food waste, suboptimal driver routing, and unpredictable demand—by implementing a subscription model requiring customers to order weekly meals in advance. Now operating across the West Coast and Northeast, Thistle has grown to $100 million in annual revenue through word-of-mouth and celebrity adoption, becoming a notable success in the traditionally challenging food business sector.

Headway is a book summary app founded in 2019 by a Ukrainian entrepreneur that has grown to $200M in ARR with 30% profit margins without raising external funding until recently. The app summarizes 1,500+ popular books into 15-minute reads or audio summaries available for a $12-13/month subscription. The company has achieved explosive growth through data-driven paid advertising on TikTok and Facebook, using psychological hooks about appearing well-read and intelligent.

Ridge Wallet is a bootstrapped e-commerce brand founded in 2013 that grew from $1M (2013) to over $200M in annual revenue without raising external capital or taking on debt. The company scaled by mastering Facebook advertising arbitrage, expanding strategically into complementary product categories like men's wedding bands, and maintaining profitability from day one.