Sites using Castbox
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Stackdar watches every launch we detect and sends you the ones using Castbox, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workFound via: StackScope Discovery (Indie) 1 · StackScope Wider Web 33
Castbox has been detected on 34 launches we've crawled, with 12 of those in September 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: Trading Chart Lab, today.
It's most commonly paired with Google Fonts, Cloudflare, and Overcast. By product type, the launches using it are most often Content (79%), Education (11%), and Finance (5%). By domain ending, launches using it are 1.8 times as likely as the average launch to live on a .com domain.
What kind of products ship with Castbox
19 launches
Domain endings using Castbox
34 sites
- .com 82.35%
- .co 5.88%
- .it 5.88%
- .online 2.94%
Share of new sites using Castbox
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
Video leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
YouTube
|
1.92% | 61.67% |
| #2 | – |
Vimeo
|
0.86% | 27.59% |
| #3 | – |
MediaElement.js
|
0.24% | 7.74% |
| #4 | ▲1 |
Plyr
|
0.11% | 3.61% |
| #5 | ▼1 |
Wistia
|
0.09% | 3.02% |
| … | ||||
| #51 | ▲23 |
Castbox
Current page
|
<0.01% | 0.03% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Video tool.Among August launches it ranked #48 in Video, up from #71 in July. All 465 in Video →
Often used with
| Tool | Sites |
|---|---|
Google Fonts
|
26 |
Cloudflare
|
23 |
Overcast
|
23 |
| HSTS | 21 |
| HTTP/3 | 20 |
Tools most often detected on the same sites as Castbox.
Recent launches we can show
1 of the 34 sites using Castbox are product launches we list individually. The other 33 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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
The StackScope API serves all 34 sites using Castbox, filterable and exportable, from £15 a month.