Sites using cors.eu.org
Free public CORS proxy that relays browser requests to APIs without cross-origin headers.
4 sites
3 found by StackScope, 1 via launch platforms
- StackScope Wider Web 3
- Product Hunt 1
cors.eu.org has been detected on 4 launches since first appearing in July 2026. Most recent detection: WalletLens - Net Worth Tracker, on August 28, 2026.
It's most commonly paired with HSTS, allOrigins, and corsproxy.io.
Share of new sites using cors.eu.org
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded parts of the chart are measured against a different set of sites.
Grey: until 8 July 2026 we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: on 10 September 2026 we improved our infrastructure so we can 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 that date. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time, so it can step at these lines without the technology itself changing. For a single continuous measure, switch to launch platforms.
API leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Wikimedia
|
0.27% | 34.36% |
| #2 | – |
Google APIs
|
0.25% | 32.62% |
| #3 | – |
Pexels
|
0.09% | 11.07% |
| #4 | – |
FlagCDN
|
0.02% | 3.20% |
| #5 | ▼1 |
Simple Icons
|
0.02% | 2.86% |
| … | ||||
| #73 |
cors.eu.org
Current page
|
<0.01% | 0.01% | |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any API tool. All 182 in API →
Often used with
| Tool | Sites |
|---|---|
| HSTS | 3 |
| allOrigins | 3 |
corsproxy.io
|
3 |
| CodeTabs | 3 |
Cloudflare DNS
|
2 |
Tools most often detected on the same sites as cors.eu.org.
Recent launches we can show
1 of the 4 sites using cors.eu.org are product launches we list individually. The other 3 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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 4 sites using cors.eu.org, filterable and exportable, from £15 a month.