Idea

Freemium And Open Source

Freemium and Open Source Ideas

Ask the data real businesses · real revenue · cited

Matching your filters

20 businesses

55% founder-reported, the rest researched

<$10K

$10K+

$50K+

$100K+

$1M+

Median revenue

$100K /mo

Middle half earn $30K – $300K/mo

How they grow

Business models

Showing 20 of 20 case studies

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Built With

Low-code micro-app builder

Low-code platform for building micro-apps.

marsx.dev

$100K /mo Reported

Anonymous single sign-on solution

"Anonymous SSO for a privacy-first internet"

human-internet.org

$100 /mo Reported

Fullstack permissions service

"Fullstack permissions service for developers."

permit.io

—

Data extraction API service

API for effortless web data extraction.

scrapingant.com

$20K /mo Reported

White-label crypto exchange platform

White-label platform for launching customizable crypto exchanges.

hollaex.com

$40K /mo Reported

Ui component library for vue

Open-source Vue.js UI library for beautiful web apps.

vuetifyjs.com

$30K /mo Reported

Api mocking desktop tool

Open-source tool for easy API mocking.

mockoon.com

—

Seo-focused rendering service

SEO optimization tool for JavaScript websites.

prerender.io

$200K /mo Reported

Customizable metric monitoring tool

Customized metric monitoring platform for developers and teams.

stateful.com

$200K /mo Reported

Focused writing platform

Privacy-focused writing platform for creative minds.

write.as

$10K /mo Reported

Cloud headless browser service

Browser automation infrastructure API for developers and AI agents

browserless.io

$300K /mo Reported

Error tracking and performance monitoring

Error tracking and performance monitoring for developers.

sentry.io

—

Ai-driven app builder

Low-code AI platform for building internal business tools.

tooljet.ai

—

Open-source experience management tool

Open-source survey tool for experience management

formbricks.com

—

Command line configuration framework

Open-source framework for managing your Zsh configuration.

ohmyz.sh

—

Open source document signing

Open-source document signing platform for secure and customizable solutions.

documenso.com

—

Your ai-powered second brain

**Supermemory AI**: "ChatGPT-powered organizer for your bookmarks."

supermemory.ai

—

Open source software directory

Community-driven list of open-source software alternatives.

openalternative.co

—

Open-source ai model hub

Open-source AI platform for sharing ML models.

huggingface.co

—

Agile project management tool

GitScrum: Agile project management with gamification for teams.

site.gitscrum.com

—

Idea	Revenue	Model	Growth	Customers	Tools	Details	Solo score A 0–100 estimate of how well-suited a business is to being run solo (or very lean). It blends team leanness, business model, growth channels, capital intensity, revenue per operator, tooling leverage and recency into one score. Higher = more solopreneur-friendly.
Low-code micro-app builder marsx.dev Low-code platform for building micro-apps.	$100K /mo Reported	Marketplace +1	Word of mouth Advertising on social media +1	Tech-savvy entrepreneur... +8	DI	Founded 2020 · 15 people · $300K to start	51	Build this
Anonymous single sign-on solution human-internet.org "Anonymous SSO for a privacy-first internet"	$100 /mo Reported	Nonprofit +2	Word of mouth Direct sales +1	Developers +3	DI	Founded 2022 · 4 co-founders · Built in 180 days	57	Build this
Fullstack permissions service permit.io "Fullstack permissions service for developers."	—	Digital Products & Courses +3	Word of mouth Advertising on social media +1	Developers at Large Ent... +7	+2	Founded 2020 · 14 people · Israel	66	Build this
Data extraction API service scrapingant.com API for effortless web data extraction.	$20K /mo Reported	SaaS +3	Affiliate program Referral Program +1	E-commerce Websites +7	+14	Founded 2020 · 2 people · Built in 30 days	76	Build this
White-label crypto exchange platform hollaex.com White-label platform for launching customizable crypto exchanges.	$40K /mo Reported	Open source +5	Word of mouth Brand Authenticity +1	Entrepreneurs +5	+17	Founded 2017 · 13 people · $10K to start	61	Build this
Ui component library for vue vuetifyjs.com Open-source Vue.js UI library for beautiful web apps.	$30K /mo Reported	Digital products +4	Word of mouth Advertising on social media +1	Developers +2	+1	Founded 2017 · Solo founder · Built in 540 days	70	Build this
Api mocking desktop tool mockoon.com Open-source tool for easy API mocking.	—	Open source	Word of mouth SEO +1	Developers +1	+11	Founded 2017 · Solo founder · Built in 90 days	81	Build this
Seo-focused rendering service prerender.io SEO optimization tool for JavaScript websites.	$200K /mo Reported	SaaS +1	Word of mouth Advertising on social media +1	Developers interested i... +6		Founded 2013 · 4 people · Built in 30 days	76	Build this
Customizable metric monitoring tool stateful.com Customized metric monitoring platform for developers and teams.	$200K /mo Reported	Subscription +1	Word of mouth Direct sales	Developers +3		Founded 2015 · 5 people · $300K to start	67	Build this
Focused writing platform write.as Privacy-focused writing platform for creative minds.	$10K /mo Reported	Subscription +2	Word of mouth SEO	Writers +5	+7	Founded 2015 · Solo founder · Washington D.C., Washington, D.C., USA, United States	73	Build this
Cloud headless browser service browserless.io Browser automation infrastructure API for developers and AI agents	$300K /mo Reported ▲ 300% · 32 mo	SaaS +1	Word of mouth SEO	Developers +2	+15	Founded 2017 · Solo founder · $500 to start	87	Build this
Error tracking and performance monitoring sentry.io Error tracking and performance monitoring for developers.	—	SaaS +2	Open-source community Leveraging existing platforms	Developers interested i... +6		Founded 2012 · 2 co-founders · San Francisco, CA, USA, United States	74	Build this
Ai-driven app builder tooljet.ai Low-code AI platform for building internal business tools.	—	SaaS +1	Product Hunt Hacker News +1	Developers +2	MO +6	Founded 2021 · 35 people · Built in 60 days	79	Build this
Open-source experience management tool formbricks.com Open-source survey tool for experience management	—	Subscription +4	Product Hunt Hacker News +1	Developers +2	UB	Founded 2022 · 2 co-founders · Built in 300 days	66	Build this
Command line configuration framework ohmyz.sh Open-source framework for managing your Zsh configuration.	—	Ai adaptation +2	Content marketing Community forum +1	Developers +2		Founded 2009 · Solo founder · Built in 1 day	86	Build this
Open source document signing documenso.com Open-source document signing platform for secure and customizable solutions.	—	Subscription +3	Organic social media	Developers +3	NE +2	Founded 2022 · 2 co-founders · Australia Plains SA, Australia, Australia	74	Build this
SA Your ai-powered second brain supermemory.ai Supermemory AI: "ChatGPT-powered organizer for your bookmarks."	—	SaaS	SEO Organic social media	Knowledge Workers +2	NE	Founded 2024 · 2 co-founders · Built in 3 days	71	Build this
Open source software directory openalternative.co Community-driven list of open-source software alternatives.	—	Services +3	Product Hunt Hacker News +1	Entrepreneurs +4		Founded 2024 · Solo founder · Built in 12 days	79	Build this
Open-source ai model hub huggingface.co Open-source AI platform for sharing ML models.	—	Api as a service +1	Word of mouth SEO +1	Developers +7	PY	Founded 2016 · 160 people · Brooklyn, MI, USA, United States	55	Build this
Agile project management tool site.gitscrum.com GitScrum: Agile project management with gamification for teams.	—	SaaS +2	SEO Organic social media	Small businesses +9	GI	Founded 2018 · Solo founder · Built in 365 days	84	Build this

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Idea	Revenue
Crm marketing attri...	$100K/mo
No-code Airtable AP...	$20K/mo
Pdf bank statement ...	$40K/mo
Ai music video gene...	$20K/mo