Sites using Shift4
Payment processing and gateway service for online and in-person commerce.
Get told when a new site ships with Shift4.
Stackdar watches every launch we detect and sends you the ones using Shift4, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workFound via: StackScope Discovery (Indie) 4 · StackScope Wider Web 25
Shift4 has been detected on 29 launches we've crawled, with 19 of those in August 2026 (0.0% of the month's launches so far). Most recent detection: SEO System | AI SEO for commerce catalogs, today.
By product type, the launches using it are most often Social (87%), Education (7%), and Marketing (7%).
What kind of products ship with Shift4
15 launches
Domain endings using Shift4
29 sites
- .com 51.72%
- .in 10.34%
- .online 10.34%
Share of new sites using Shift4
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.
Payments leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Stripe
|
1.18% | 53.30% |
| #2 | ▲2 |
PayPal
|
0.25% | 11.49% |
| #3 | – |
Razorpay
|
0.23% | 10.45% |
| #4 | ▼1 |
Paddle
|
0.10% | 4.70% |
| #5 | ▼2 |
Lemon Squeezy
|
0.06% | 2.80% |
| … | ||||
| #95 | Shift4 Current page | <0.01% | 0.07% | |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Payments tool. All 816 in Payments →
Recent launches we can show
4 of the 29 sites using Shift4 are product launches we list individually. The other 25 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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
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The StackScope API serves all 29 sites using Shift4, filterable and exportable, from £15 a month.