Should I use Stacktree or HTMLRadar?

Use Stacktree when the deliverable needs to live somewhere: their site describes private pages on your own domain, one address per client where the work collects, and publishing straight from an agent through their MCP server. Use HTMLRadar when you are sending one HTML file to named people and the question is which sections they read.

Both products mention sections. Are they measuring the same thing?

Stacktree describes its analytics as knowing when a page was opened, how long people stayed, and which sections held them. HTMLRadar reports section-level dwell inside the HTML too, alongside active time and scroll depth, and gives each recipient their own link so the reading is attributable per person. Read both descriptions before choosing.

Can I self-host either one?

HTMLRadar is AGPL-3.0 on GitHub and runs in your own Cloudflare and Supabase accounts, with a self-hosting guide in the repository. Stacktree links a page describing running the whole stack yourself as source-available, and lists running in your own cloud under its Enterprise plan. Check their current terms directly.

HTMLRadar · Compare

Stacktree and HTMLRadar both track HTML. Here is the difference.

Updated August 2026

Both track reading: Stacktree's site says it shows which sections held a reader, and HTMLRadar reports the same. HTMLRadar is open source, self-hostable, and free for two links that do not expire; Stacktree's free plan caps at 3 pages that come down after 7 days. Want client portals on your own domain? Stacktree. Want open source and two free links that do not expire? HTMLRadar.

Stacktree's site describes one address per client where everything collects, a single passcode that covers the whole address, your own domain and branding on the page, and an MCP server so an agent can publish without a build step or DNS. If your problem is that the work keeps arriving as attachments, that is a real answer to it.

HTMLRadar does not try to be a place your work lives. It is a tracked link for one HTML file or one URL, sent per recipient, with the reading reported back section by section. If you already have somewhere to put the page, this is the measurement layer.

Side by side

Feature	HTMLRadar	Stacktree, in their own words
What it is	A tracked link for one HTML file or URL	Their homepage: “Turn reports, decks, audits and proposals into private pages on your own domain.”
Getting the HTML in	Upload an HTML file or paste a URL you already host	Their developer page: “Add the MCP server and your agent publishes to a private link. No build, no DNS.”
Reading detail	Which sections or slides were read, active time, and scroll depth inside the HTML	Their homepage: “Know when it was opened, how long they stayed, and which sections held them.”
Controls on the link	Optional email gate, password, expiry, allow-list, and revocation	Their homepage: “Unguessable links and passcodes as standard, on every plan. From $19 a month, add a verified-email gate or your own domain in seconds.” and “Set an expiry so access ends with the engagement, or revoke it outright.”
Price, checked 30 August 2026	Free for 2 tracked links, then $15 a month or $150 a year	Their pricing block: “Free — $0 no card — 3 pages in total … Pages come down after 7 days … Carries a Stacktree footer”, “Solo — $19 /month”, “Studio — $79 /month”, “Firm — $249 /month”
Licence and self-hosting	Open source under AGPL-3.0; self-hostable on Cloudflare and Supabase	Stacktree’s developer page describes a source-available option; an open-source licence is not named on the pages we read.

Checked 30 August 2026 on stacktr.ee: the homepage, including its pricing block, and the developer page. Every Stacktree cell is quoted from those pages. Where their site does not say something, the cell says so rather than guessing.

When to use each product

Use Stacktree

You want a client portal on your own custom domain, with one passcode covering the whole address and an MCP server so your agent can publish directly. That starts at $19 a month on Solo; their free plan tops out at 3 pages that expire after 7 days and carry a Stacktree footer.

Use HTMLRadar

You are sending one HTML file, whether uploaded or a URL you already host, to named people and want section-level reading reported back per recipient. The free tier is two tracked links that do not expire, then $15 a month or $150 a year, and the source is open under AGPL-3.0 so you can self-host it.

Common questions

Should I use Stacktree or HTMLRadar?: Use Stacktree when the deliverable needs to live somewhere: their site describes private pages on your own domain, one address per client where the work collects, and publishing straight from an agent through their MCP server. Use HTMLRadar when you are sending one HTML file to named people and the question is which sections they read.
Both products mention sections. Are they measuring the same thing?: Stacktree describes its analytics as knowing when a page was opened, how long people stayed, and which sections held them. HTMLRadar reports section-level dwell inside the HTML too, alongside active time and scroll depth, and gives each recipient their own link so the reading is attributable per person. Read both descriptions before choosing.
Can I self-host either one?: HTMLRadar is AGPL-3.0 on GitHub and runs in your own Cloudflare and Supabase accounts, with a self-hosting guide in the repository. Stacktree links a page describing running the whole stack yourself as source-available, and lists running in your own cloud under its Enterprise plan. Check their current terms directly.

Track an HTML file free

First 2 tracked links free. No credit card. AGPL-3.0 source on GitHub.

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