Chrome extension Startups

SimpleLogin is an open-source email alias service that protects user privacy by allowing them to create different email identities for each website. Founded by Son NK after being inspired by Edward Snowden's documentary, the bootstrapped SaaS grew organically through content marketing and endorsements from privacy influencers to reach $3,000 MRR with approximately 1,000 subscribers.

OneUp is a bootstrapped, profitable social media scheduling tool that differentiates itself by allowing posts to automatically repeat at custom intervals (daily, weekly, monthly, etc.). Founded by Davis Baer and Vishal Kumar in January 2017, the product gained initial traction through a Product Hunt launch and has grown primarily through content marketing—including a viral Google Sheet comparing 90 scheduling tools and high-quality Quora answers. The team uses personalized Loom videos during onboarding to create wow moments, resulting in 50%+ response rates and word-of-mouth growth.

ThreadLive is a freemium B2B SaaS product designed as a Chrome extension for Gmail that lets sales, procurement, and project teams manage emails in a workspace with planned collaboration features. The founder faces the classic challenge of marketing an unknown product category with a low-touch freemium model ($20/month after 2 months) and no existing search volume for the problem they're solving.

Ann Law runs Nest Labs, an umbrella for three interconnected products: Make Your Mind (a neuroscience + entrepreneurship newsletter with 5,000 subscribers), Teeny Breaks (a free Chrome extension promoting mindful breaks), and Maker Mag (a community publication celebrating bootstrap founders making money). She generates $1,500/month in sponsorship revenue from Maker Mag and is monetizing Make Your Mind through inbound sponsors, growing from 0 to 5,000 subscribers in 3 months by consistently publishing daily content across Twitter, LinkedIn, Hacker News, and other platforms.

Blocker X (formerly Fund Switch Technology) is a YC-backed digital wellness app helping people overcome pornography and social media addictions. The company started as a Chrome extension with 600k+ users and pivoted to mobile-first with a 1M+ install base on Android, combining blocking technology, community support, and gamification.

Cherry is a browser extension that helps accommodation businesses get direct bookings by showing customers better deals when they search on travel sites like Expedia and Booking.com. In four months, they onboarded nearly 1,000 partner properties across Australia, New Zealand, and Canada, with plans to launch in the US with 20,000 properties by November. They charge hotels a performance fee of $10/month plus $0.79 per click, significantly cheaper than the 30% commissions charged by major OTAs.

Notable is a next-generation collaborative note-taking platform launched by Amal Sarva, an experienced founder and investor. The Chrome extension launched ~90 days before this interview achieved 15,000 free users, driven primarily by a LifeHacker feature obtained through strategic Twitter outreach to productivity journalists. The company raised $1M in seed funding from angels and early-stage investors including Bloomberg Beta and 500 Startups.

Cirrus Insight is a Gmail and Outlook plugin that integrates with Salesforce to eliminate the need for salespeople to switch between email and CRM. Founded in 2011 by Brandon Bruce and Ryan Toth, the bootstrapped startup achieved $6.5M ARR by 2015 ($640K MRR) through deep Salesforce integration and a network of 350+ consulting partners. The company maintains net-negative churn and charges $19/user/month, serving 100,000 end users across 3,500 organizations.

Vidyard is a video marketing platform founded in 2010 that has grown to serve over 1,000 customers across three offices (Vancouver, Boston, Waterloo). The company has raised $70M in funding and is more than doubling year-over-year revenue while maintaining 85-90% gross margins through economies of scale and strategic product expansion. Growth is driven by personalized video prospecting, referrals, and a freemium Chrome extension called ViewedIt that has reached 100,000 users since October.

MailTag is an email tracking and scheduling tool for salespeople launched in August 2017 by Rishikesh Kali and co-founder Alex Edson. With a team of 8 people split between Pune, India and Phoenix, Arizona, they've grown to 600 paying customers generating $4,500 MRR through organic growth and word-of-mouth referrals. Despite investing $250,000 and experiencing 1.5% monthly logo churn, they're planning to raise VC funding to accelerate growth and add more sales tool features.

Proleads was a B2B SaaS tool founded in 2010 that automated sales development through personalized email outreach at scale. After 8 years of operation with high churn issues, founder Anders Fredrickson acquired the Brisk.io technology in 2017 and joined the Alchemist Accelerator, eventually selling the company in February 2018 to Outbound Works for over $1.8M (more than 2x the ~$900k raised), with a mix of cash and stock.

RightKit is a bootstrapped social media automation platform built around four core tools (RightTag, RightWrite, RightForage, RightBoost) plus an API with 19 endpoints that help marketers automate hashtag generation, image tagging, and other repetitive tasks. Founded by Saul Fleischman in January 2012, the company has grown to 431,000 registered users from 20-25 million site visits, with the API now being the primary revenue driver after originally starting with RightTag as a browser extension.

Surfer SEO is a bootstrapped SaaS tool that helps content creators optimize pages for both search engines and users by analyzing top-ranking competitors. Spun out from a Polish SEO agency in 2017, it grew from $82K MRR a year ago to $250.4K MRR today through affiliate marketing (30% of revenue), a free Chrome extension (250K daily users), and community engagement. The team of 30 serves 4,000+ customers across subscription tiers ($29-$199/month) with 60% profit margins.

Crystal is a 7+ year old adaptive selling tool built as a Chrome extension and email coach for B2B sales teams. For the first five years, Drew ran a pure PLG/self-service model with $29-49/month pricing, generating 1,000+ signups daily but struggling with 2-3% monthly churn and inability to scale ACV. In 2020, he pivoted to a hybrid model with dedicated sales teams targeting mid-market ($3-24K ACV) and enterprise accounts, discovering that the same product showed 120% net revenue retention in B2B vs. 55% in self-service, ultimately 4xing LTV and reaching 101% net retention across the customer base.

ZeroXClem is a lead generation SaaS for B2B companies launched in August 2023 by Darrell Bryan, a former crypto influencer. The two-person bootstrapped team achieved $10,000 MRR with 35 customers within four months by using cold email outreach targeting agencies and leveraging their own platform to identify ideal customer profiles. They differentiate through unlimited platform access, AI-powered business intelligence, and a Chrome extension, planning to expand to Instagram integration.

Astalty is a SaaS platform serving Australia's NDIS market for disability care providers. Co-founded by James Mooring, the company bootstrapped from zero to seven figures in just 18 months through a strategic approach of starting with a free Chrome extension, smart pricing decisions, and leveraging word-of-mouth growth via in-person events and Facebook groups.

Brad Miller is a serial acquirer of underperforming SaaS companies. He bought an internet security SaaS company doing $5-6M in revenue for approximately $5.5M in equity and $1M in debt, then converted it from a perpetual license model to subscription recurring revenue, which increased revenue 40% overnight and turned the business profitable within a year. He later bought a bootstrapped property management app doing $3M revenue at a $6M pre-money valuation (2021), which grew to $7M ARR within a year through geographic expansion beyond Chicago.

CoSchedule is a content marketing and social media publishing calendar built by Garrett Moon and Justin Culey, two entrepreneurs who transitioned from running a web design consulting business. They identified the problem while serving clients, validated it through blog posts and customer interviews, and grew to 7,000+ paying customers and 100,000+ blog subscribers primarily through content marketing—publishing 500+ in-depth, actionable blog posts and building a free headline analyzer tool that drove significant traffic and email signups.

Prospectify is a B2B prospecting platform that automates lead generation through data search, enrichment, and email verification. Founded in January 2016 by Matt Extram and Noah, the bootstrapped startup grew from zero to $20,000 MRR in less than nine months by focusing on customer success, strategic partner integrations (Salesforce, HubSpot, Reply), and targeted outbound sales. The company just closed a $1M Series A round and was accepted into Techstars.