5 Free Tools, 5 Paid Services: Who Buys Them and What to Charge

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If you sell AI services, you don't have to build every tool yourself. Plenty of good ones are free. Clients pay for someone to set the tool up for their business and keep it running.

Here are five free tools you can turn into paid services. Context.dev becomes a competitor price watch for a gym or a clinic. VoiceStudio dubs a YouTuber's videos into Spanish in their own voice. PageIndex lets a law firm ask questions across its contracts. DeskComm CRM runs a WhatsApp sales agent for a real estate agency. OpenMontage makes short videos for a local business.

Each comes with a buyer and a suggested price. They're starting points for your own market, not a rate card. The links are above.

What can you sell with each free tool?

Context.dev: a competitor price watch for gyms and clinics

Context.dev is a web data API that plugs into Claude as a connector. Its monitors re-check a page on a schedule and flag what changed.

You set up a competitor watch for a gym or a clinic, so your client hears about every rival price change before their customers do. Suggested price: $500 setup plus $150 a month on retainer.

The free plan gives you 1,000 credits a month with a work email, or 250 one-off with a personal email, and up to 10 monitors.

VoiceStudio: dub a YouTuber's channel in their own voice

VoiceStudio is a free, open source alternative to ElevenLabs, with over 52,000 stars on GitHub. It runs locally and handles voice cloning and dubbing in over 600 languages.

You dub a YouTuber's channel into Spanish, in their own voice. Suggested price: $200 per video.

PageIndex: "ask your contracts" for a law firm

PageIndex is open source document Q&A, MIT licensed, with over 38,000 stars. It reasons over the structure of each document, so every answer points to the exact page it came from.

You give a law firm or an accountant one place to ask questions across all their contracts, without anyone digging through files. Suggested price: $2,000 setup plus $250 a month.

DeskComm CRM: a WhatsApp agent that books every lead

DeskComm CRM is a self-hosted, open source CRM with AI agents on WhatsApp. It's MIT licensed, with over 4,000 stars.

You build a real estate agency a WhatsApp agent that answers, qualifies and books every lead, instead of leaving them on read until morning. Suggested price: $1,800 setup plus $250 a month.

Its README is mostly in Portuguese, so give yourself time to read it before you pitch.

OpenMontage: 8 short videos a month, no filming days

OpenMontage is an open source, agentic video production system with over 62,000 stars.

You sell a local business 8 short videos a month with zero filming days, built from AI-generated or stock footage. Suggested price: $1,000 a month.

Want five more? Here are five more free repos you can sell as AI services. Or take the free AI bottleneck test to see where AI would save your own team the most time.