Small JavaScript library for heatmap rendering on canvas.
Get told when a new site ships with simpleheat.
Stackdar watches every launch we detect and sends you the ones using simpleheat, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work168 sites
159 found by StackScope, 9 via launch platforms
- StackScope Wider Web 88
- StackScope Discovery (Indie) 71
- Product Hunt 9
simpleheat has been detected on 168 launches we've crawled, with 98 of those in August 2026 (0.0% of the month's launches so far). The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: Sky Mood, today.
It's most commonly paired with Google Search Console, HSTS, and Cloudflare. By product type, the launches using it are most often Developer Tools (30%), Marketing (15%), and Productivity (15%). By estimated origin, Canada (17%) and the United Kingdom (14%) lead close together.
What kind of products ship with simpleheat
20 launches
Domain endings using simpleheat
168 sites
- .com 36.90%
- .app 16.67%
- .online 8.93%
- .org 5.95%
- .cloud 4.17%
- .ca 2.98%
- .uk 2.98%
- .in 2.38%
- .io 2.38%
Country-coded domains
29 of 168 sites. Mostly read from the domain ending, so the US is undercounted.
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Canada 17.24%
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United Kingdom 13.79%
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India 13.79%
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Russia 13.79%
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Poland 6.90%
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Belgium 3.45%
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Switzerland 3.45%
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China 3.45%
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Indonesia 3.45%
Share of new sites using simpleheat
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.
How StackScope detects technologies
⋮ Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery.
Javascript Library leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | ▲1 |
|
13.72% | 34.17% |
| #2 | ▼2 |
|
7.02% | 17.49% |
| #3 | ▲1 |
|
6.99% | 17.39% |
| #4 | – |
|
4.22% | 10.50% |
| #5 | ▲5 |
|
3.47% | 8.64% |
| … | ||||
| #199 | ▼47 |
|
0.01% | 0.02% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Javascript Library tool.Among July launches it ranked #176 in Javascript Library, down from #129 in June. All 931 in Javascript Library →
Recent launches we can show
80 of the 168 sites using simpleheat are product launches we list individually. The other 88 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works
Sky Mood
Showing the most recent 12 of 80.
The StackScope API serves all 168 sites using simpleheat, filterable and exportable, from £15 a month.