Compare · Stacktree
Stacktree and HTMLRadar both track HTML. Here is the difference.
Stacktree is built for client portals on your own domain; HTMLRadar is a tracked link per reader. Stacktree’s site says it shows which sections held a reader, and HTMLRadar reports the same; HTMLRadar’s two free links stay live until you set an expiry or switch them off, where Stacktree’s 3 free pages come down after 7 days.
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Checked 30 August 2026
Side by side
| What you need | HTMLRadar | Stacktree |
|---|---|---|
| Feature | ||
| What it is | A tracked link for one HTML file or URL | “Turn reports, decks, audits and proposals into private pages on your own domain.”1 |
| Getting the HTML in | Upload an HTML file or paste a URL you already host | “Add the MCP server and your agent publishes to a private link. No build, no DNS.”2 |
| Reading detail | Which sections or slides were read, active time, and scroll depth inside the HTML | “Know when it was opened, how long they stayed, and which sections held them.”1 |
| Controls on the link | Optional email gate, password, expiry, allow-list, and revocation | “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.”1 |
| Price, checked 30 August 2026 | Free for 2 tracked links, then $15 a month or $150 a year | “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”1 |
| Licence and self-hosting | Hosted service, developed privately; not offered for your own servers | Stacktree’s developer page describes a source-available option; an open-source licence is not named on the pages we read.2 |
HTMLRadar
Feature
- What it is
- A tracked link for one HTML file or URL
- Getting the HTML in
- Upload an HTML file or paste a URL you already host
- Reading detail
- Which sections or slides were read, active time, and scroll depth inside the HTML
- Controls on the link
- Optional email gate, password, expiry, allow-list, and revocation
- Price, checked 30 August 2026
- Free for 2 tracked links, then $15 a month or $150 a year
- Licence and self-hosting
- Hosted service, developed privately; not offered for your own servers
Stacktree
Feature
- What it is
- “Turn reports, decks, audits and proposals into private pages on your own domain.”1
- Getting the HTML in
- “Add the MCP server and your agent publishes to a private link. No build, no DNS.”2
- Reading detail
- “Know when it was opened, how long they stayed, and which sections held them.”1
- Controls on the link
- “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.”1
- Price, checked 30 August 2026
- “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”1
- Licence and self-hosting
- Stacktree’s developer page describes a source-available option; an open-source licence is not named on the pages we read.2
Sources
- 1Stacktree’s homepage, including its pricing block, on stacktr.ee.
- 2Stacktree’s developer page, on stacktr.ee.
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. It is built for the problem of work that keeps arriving as attachments.
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.
What Stacktree is built for
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.
Where HTMLRadar fits
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 remain live unless you set an expiry or revoke them, then $15 a month or $150 a year.
What is the difference between Stacktree and HTMLRadar?
Stacktree is built for a deliverable that 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. HTMLRadar fits 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 the time on each section inside the HTML too, alongside active time and scroll depth, and gives each recipient their own link so the reading is attributable per person.
Can I self-host either one?
HTMLRadar cannot be self-hosted; it is a hosted service. Stacktree links a page describing running the whole stack yourself as source-available, and lists running in your own cloud under its Enterprise plan.