HTMLRadar · Self-host
The self-hosted, open-source DocSend alternative for HTML.
Updated August 2026
HTMLRadar is a self-hosted, open-source DocSend alternative for HTML. The whole product is AGPL-3.0: run it in your own Cloudflare and Supabase accounts, keep documents and read data in your own storage, and see who read what. Or use the hosted version, free for two tracked links.
HTMLRadar is AGPL-3.0, end to end: the tracker, the proxy worker, the database schema, and the web app. Run the whole thing in your own Cloudflare and Supabase accounts. Your documents live in your R2 bucket, and your read data and recipient emails live in your Supabase project.
What do you need to run it?
A Cloudflare account for Pages, Workers, and R2; a Supabase project for the database and authentication; and a domain. Resend is optional if you want first-read email notifications. The self-hosting guide lists every required secret and deployment step.
Why self-host a document tracker?
- Compliance. Banks, healthcare, and M&A teams that need deal documents in their own cloud accounts can run the stack they control.
- Data locality. Read analytics and recipient emails stay in your own Supabase project, while uploaded documents stay in your own R2 bucket.
- Auditability. The tracker code is open — you and your recipients can read exactly what is collected. Closed-source trackers can't offer that.
How is it different from the hosted version?
It isn't — that's the guarantee. The hosted product at htmlradar.com runs the same public code. Self-hosting means you configure and operate your own Cloudflare and Supabase deployment instead of using the hosted service. Coming from DocSend? See how HTMLRadar compares as an open-source DocSend alternative.
Common questions
- Is self-hosting really free?
- The software is free under AGPL-3.0. You pay Cloudflare, Supabase, your domain registrar, and any optional email provider directly. Their free tiers can cover light personal use, but review each provider’s current limits before relying on them.
- What does the AGPL license require?
- You can run, modify, and use HTMLRadar commercially. If you offer a modified version to others over a network, you must share those changes under the same license.
- What if I can't use AGPL (closed-source product, or company policy)?
- A commercial license is available — it removes the AGPL copyleft obligations so you can embed HTMLRadar in a closed-source product or run a hosted service without publishing your changes. Email hello@htmlradar.com, and see COMMERCIAL-LICENSE.md in the repo.
- What does setup involve?
- Run the database migrations in Supabase, configure Cloudflare Pages, Workers, and R2, set the required secrets, and point your domain at the deployment. The self-hosting guide covers the exact sequence.
Or skip the setup — the hosted version is free for your first 2 tracked links.
Related: the open-source DocSend alternative, hosted pricing, and how we built HTMLRadar.