Sites using cors.lol
Free CORS proxy that relays browser requests to APIs lacking cross-origin headers.
2 sites
1 found by StackScope, 1 via launch platforms
- StackScope Discovery (Indie) 1
- Product Hunt 1
cors.lol has been detected on 2 launches since first appearing in August 2026. Most recent detection: FinaPilot — Apprendre à investir sans risquer un euro, on August 25, 2026.
It's most commonly paired with HSTS, CoinGecko, and Fastmail.
Share of new sites using cors.lol
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.
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 that line without the technology itself changing. For a single continuous measure, switch to launch platforms.
Developer Tools leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Vite
|
22.45% | 97.23% |
| #2 | – |
Rspack
|
0.35% | 1.52% |
| #3 | ▲1 |
pywb (Wayback Machine toolkit)
|
0.09% | 0.40% |
| #4 | ▼1 |
SheetJS
|
0.07% | 0.31% |
| #5 | ▼1 |
Instant.page
|
0.06% | 0.24% |
| … | ||||
| #213 |
cors.lol
Current page
|
<0.01% | <0.01% | |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Developer Tools tool. All 405 in Developer Tools →
Often used with
| Tool | Sites |
|---|---|
| HSTS | 2 |
CoinGecko
|
2 |
Fastmail
|
1 |
Cloudflare DNS
|
1 |
NS1
|
1 |
Tools most often detected on the same sites as cors.lol.
Recent launches we can show
2 of the 2 sites using cors.lol are product launches we list individually.
