Idea

Freemium And Open Source

Freemium and Open Source Ideas

Ask the data real businesses · real revenue · cited

Matching your filters

17 businesses

94% founder-reported, the rest researched

<$10K

$10K+

$50K+

$100K+

$1M+

Median revenue

$30K /mo

Middle half earn $10K – $60K/mo

How they grow

Business models

Showing 17 of 17 case studies

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Built With

Estimation and proposal platform

Estii: Pricing platform for service sales teams.

estii.com

$10K /mo Reported

Digital business card manager

Sales networking tool for seamless contact management.

wavecnct.com

$30K /mo Reported

Contract creation platform

AI-powered contract creation for non-lawyers.

legislate.tech

$5K /mo Reported

Affordable all-in-one crm

Affordable FaaS CRM and customer support for SMBs.

onehash.ai

$10K /mo Reported

Data extraction API service

API for effortless web data extraction.

scrapingant.com

$20K /mo Reported

Custom web app development

"IoT and web app development for enterprises."

dreamonkey.com

$30K /mo Reported

Free desktop project scheduler

Free desktop Gantt chart software for project scheduling.

ganttproject.biz

$3K /mo Reported

Scheduling api for developers

Scheduling API for seamless developer integration.

spurwing.io

$50K /mo Reported

Smart size chart solution

E-commerce sizing plugin for accurate clothing fit.

kiwisizing.com

$40K /mo Reported

Ai-driven process automation

AI-driven process automation for seamless business operations.

rapidautomation.ai

$60K /mo Reported

Customizable crm for businesses

Open-source CRM for small to mid-size businesses.

espocrm.com

$30K /mo Reported

End-to-end supply chain software

B2B supply chain automation and planning software.

inquizity.com

$30K /mo Reported

Customizable metric monitoring tool

Customized metric monitoring platform for developers and teams.

stateful.com

$200K /mo Reported

Sales-focused screen sharing

Screen sharing tool for telesales teams.

crankwheel.com

$60K /mo Reported

Slack bot automation tools

Slack bots for enhancing team collaboration and engagement.

vestris.com

$200 /mo Reported

Cloud headless browser service

Browser automation infrastructure API for developers and AI agents

browserless.io

$300K /mo Reported

Open source document signing

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

documenso.com

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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.
Estimation and proposal platform estii.com Estii: Pricing platform for service sales teams.	$10K /mo Reported	SaaS +1	Direct sales Pay Per Click Advertising +1	Service Providers +8	FI +15	Founded 2021 · 2 co-founders · $20K to start	71	Build this
Digital business card manager wavecnct.com Sales networking tool for seamless contact management.	$30K /mo Reported	SaaS +3	Direct sales SEO +1	Sales Teams +5	FI +30	Founded 2021 · 2 people · $5K to start	69	Build this
Contract creation platform legislate.tech AI-powered contract creation for non-lawyers.	$5K /mo Reported	Subscription +3	Word of mouth SEO	Non-lawyers creating co... +8		Founded 2020 · 12 people · $200K to start	61	Build this
Affordable all-in-one crm onehash.ai Affordable FaaS CRM and customer support for SMBs.	$10K /mo Reported	SaaS +2	Affiliate program Advertising on social media +1	Small businesses +16	+3	Founded 2020 · 7 people · $10K to start	59	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
D Custom web app development dreamonkey.com "IoT and web app development for enterprises."	$30K /mo Reported	Services +3	Word of mouth Brand Authenticity +1	Enterprises +1	AW	Founded 2018 · 2 people · $40K to start	55	Build this
Free desktop project scheduler ganttproject.biz Free desktop Gantt chart software for project scheduling.	$3K /mo Reported	Pay what you want +2	Word of mouth Facebook Community +1	SMBs +3	+12	Founded 2012 · Solo founder · Prague, Czechia, Czech Republic	77	Build this
Scheduling api for developers spurwing.io Scheduling API for seamless developer integration.	$50K /mo Reported	Api +3	Word of mouth Advertising on social media +1	Software Developers +6		Founded 2020 · 3 people · $100K to start	50	Build this
Smart size chart solution kiwisizing.com E-commerce sizing plugin for accurate clothing fit.	$40K /mo Reported	SaaS +4	Word of mouth Advertising on social media +1	Ecommerce Sellers +3		Founded 2018 · Solo founder · $300 to start	80	Build this
Ai-driven process automation rapidautomation.ai AI-driven process automation for seamless business operations.	$60K /mo Reported	Automation +2	Word of mouth Direct sales	Hospitality Management ... +9	RA SH +3	Founded 2017 · 35 people · $200K to start	41	Build this
Customizable crm for businesses espocrm.com Open-source CRM for small to mid-size businesses.	$30K /mo Reported	Open source +1	SEO	Small and Mid-Size Busi... +7	+8	Founded 2011 · Solo founder · $10K to start	59	Build this
End-to-end supply chain software inquizity.com B2B supply chain automation and planning software.	$30K /mo Reported	Services +7	Affiliate program Word of mouth +1	Pharmaceutical Companies +17	EX	Founded 2011 · 25 people · $50K to start	51	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
Sales-focused screen sharing crankwheel.com Screen sharing tool for telesales teams.	$60K /mo Reported	SaaS +2	Direct sales SEO	Sales Teams +3	AW +38	Founded 2015 · 3 people · Reykjavik, Iceland, Iceland	68	Build this
Slack bot automation tools vestris.com Slack bots for enhancing team collaboration and engagement.	$200 /mo Reported	Subscription +1	Word of mouth	Remote Teams +3	+1	Founded 2015 · Solo founder · New York, New York, USA, United States	68	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
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

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