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17
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1
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$50k
Average MRR
$50k
Highest MRR

Matching Case Studiesnewest first

Huberman Lab

by Andrew Huberman

Huberman Lab is a free educational podcast and content platform launched in January 2021 by neuroscientist and Stanford professor Andrew Huberman. Within 10 months of launch, the channel became one of the top 10 most popular podcasts globally, with the first video reaching 652,000 views and subsequent videos hitting 1+ million views. The growth was driven by consistent weekly content, word-of-mouth from major podcast appearances, and a commitment to free, science-backed health and wellness education.

2021ContentWord Of Mouthfree

Acquired

by David Rosenthal, Ben Gilbert

Acquired is a long-form podcast launched in September 2019 by David Rosenthal and Ben Gilbert that tells the detailed histories of major tech companies and acquisitions. The show averages 200,000 downloads per episode across Spotify and RSS feeds, with a highly valuable audience composition of 40% C-level/VP executives, 23% current founders, and 12% former founders. The hosts intentionally avoid common podcasting strategies like short episode formats, weekly releases, and frequent guest appearances, instead focusing on deep-dive research and conversational storytelling that has grown steadily over 8 years with no viral moments.

2019ContentWord Of Mouthfree

Colin Huggins - Street Piano Performance

by Colin Huggins

Colin Huggins is a classical pianist who performs on the streets of Washington Square Park in New York, earning approximately $100,000 annually through donations. Over nine years, he refined his performance strategy—from making $100-150 per day initially to rarely making less than $1,000 per day by understanding audience psychology, strategic music selection, and crowd dynamics. Beyond street performance, he works with the Reciprocity Foundation, writing songs for homeless youth in New York City.

First customers: Street performance in Washington Square Park, drawing crowds with piano music

2015OtherWord Of Mouthfree

SaaS Podcast

by Omar Khan

The SaaS Podcast, hosted by Omar Khan since 2014, has become a go-to resource for founders building SaaS businesses. Now at episode 300, the podcast features interviews with proven founders and industry experts sharing strategies and insights. The show has built a strong community through consistent, valuable content and genuine storytelling that resonates with early-stage founders.

2014ContentWord Of Mouthfree

Syria Airlift Project

by Mark D. Jacobsen

Mark D. Jacobsen founded the Syria Airlift Project, a nonprofit moonshot effort to deliver humanitarian aid using drone swarms to break starvation sieges in Syria. Despite achieving significant technical milestones—including reliable autonomous 100km round-trip drone flights and professional demonstrations—the project ultimately failed in December 2015 due to lack of a viable business model, reliance on volunteer labor, and inability to navigate the complex political and logistical challenges of the Syrian conflict.

2014OtherWord Of Mouthfree

Charity Water

by Scott Harrison

Charity Water was founded by Scott Harrison in 2006 after he transitioned from being a nightclub promoter in New York to volunteering on a humanitarian hospital ship in Liberia. Witnessing the water crisis firsthand, he pivoted to solving global water poverty using an innovative nonprofit model: 100% of donations go directly to water projects while overhead is funded separately by entrepreneurs and major donors. The organization has raised $750 million, provided clean water to 16.8 million people across 22 countries, and pioneered donor engagement through birthday fundraising campaigns that have raised over $100 million.

First customers: Birthday party fundraiser - Scott threw his 31st birthday party at a nightclub, charged $20 for donations, and raised $15,000 which went directly to build the first well in Uganda

2006OtherWord Of Mouthfree

FreeConferenceCalled.com

by David Erickson

FreeConferenceCalled.com, founded by David Erickson in October 2001 with a $10 domain purchase, grew to become a dominant conferencing platform serving 40 million monthly users and processing 1 million conference calls per day. The company monetizes through terminating access fees from telecom carriers rather than charging end users, enabling completely free conferencing and achieving 100%+ profit margins in early years. Now at 140 employees and over $100 million in annual revenue, the company remains bootstrapped and debt-free, having rejected a $250 million acquisition offer.

2001SaaSWord Of Mouthfree

Morning Brew

by Austin Rief

Morning Brew is a business news newsletter founded by Austin Rief in college. Built with authenticity as a core value rather than immediate monetization focus, the newsletter grew through word-of-mouth referrals and Twitter engagement, with subscribers becoming brand ambassadors for the product.

First customers: college network

ContentWord Of Mouthfree

Block

Block, a financial services and fintech company led by CEO Jack Dorsey, has become one of the most AI-native large companies by building Goose, an open-source AI agent that saves engineering teams 8-10 hours per week. Under CTO Donjie Prasanna's leadership, Block reorganized from a GM structure to a functional structure, enabling deeper technical focus and AI integration across all teams, from engineers to non-technical roles. The company is pushing the boundaries of autonomous AI agents that can work 24/7, anticipate user needs, and orchestrate complex workflows across enterprise tools.

SaaSWord Of Mouthfree

Never Search Alone

by Phil Terry

Never Search Alone is a free community-driven platform founded by Phil Terry that helps job seekers find employment through peer-support councils of 6-8 people. The program uses a product-lens methodology called 'candidate market fit' to help people narrow their job search and includes practical frameworks like the Manukin two-pager and listening tours. With 2,000 volunteer moderators and widespread word-of-mouth adoption, the platform reports an average job search duration of 3 months, at the low end of the national average.

OtherWord Of Mouthfree