W3.CSS on new websites
Lightweight CSS framework from W3Schools, styled after Google's Material Design.
69 sites
63 found by StackScope, 6 via launch platforms
- StackScope Wider Web 61
- StackScope Discovery (Indie) 2
- Product Hunt 6
W3.CSS appeared on about 20 new sites in the last 30 days.
These figures cover websites that went live since April 2026, not the web as a whole.
Get told when a new site ships with W3.CSS.
20 new sites with W3.CSS first seen in the last 30 days.
Stackdar watches every launch we detect and sends you the ones using W3.CSS, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workShare of new sites using W3.CSS
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026. Chart starts at first detection.
The shaded areas were measured against a different set of sites, so the line can step there without W3.CSS itself changing.
Coverage details
Before the dashed line where the dots begin, the line is a weekly average. After it, the last 90 days are shown one day at a time.
Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.
What kind of sites use W3.CSS
28 sites with a known type, all time
Domain endings using W3.CSS
69 sites, all time
- .com 56.5%
- .org 8.7%
- .in 7.3%
- .ca 5.8%
- .site 2.9%
- .ch 1.5%
- .de 1.5%
- .dev 1.5%
Country
Country known for 11 of 69 sites (15.9%), all time.
How we know
Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. We count a country only where it is stated plainly enough to be sure: a governing-law clause or company registration number on a legal page, a phone country code, or a country domain ending. Sites that publish none are not counted at all.
-
Canada
45.5%
-
India
18.2%
-
United States
18.2%
-
France
9.1%
-
Italy
9.1%
CSS Framework leaders
| Tool | % of sitesall time | % of categoryall time | ||
|---|---|---|---|---|
| #1 | – |
Tailwind CSS
|
24.6% | 86.3% |
| #2 | – |
Bootstrap
|
4.3% | 15.1% |
| #3 | – |
UIkit
|
0.1% | 0.4% |
| #4 | – |
Layui
|
<0.1% | 0.1% |
| #5 | ▼1 |
Materialize
|
<0.1% | <0.1% |
| … | ||||
| #9 | ▼2 |
W3.CSS
Current page
|
<0.1% | <0.1% |
Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any CSS Framework tool.Among September launches it ranked #11 in CSS Framework, down from #9 in August. All 32 in CSS Framework →
Recent launches using W3.CSS
8 of the 69 sites using W3.CSS are product launches we list individually. The other 61 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works
Law Prep Tutorial
Also detected
Law Prep Tutorial
Also detected
Law Prep Tutorial
Also detected
LPTedtech
Also detected
AI-Powered CRM Software for Growing Businesses | GoFox
Also detected
BlkSeal
Also detected
Law Prep Tutorial
Also detected
The StackScope API serves all 69 sites using W3.CSS, filterable and exportable, from £15 a month.