Sites using Altcha
Open-source proof-of-work CAPTCHA alternative; uses a TXT DNS record for domain verification
Found via: Product Hunt 1 · PeerPush 2 · StackScope Discovery (Indie) 3 · StackScope Wider Web 32
Figures on this page reflect sites found via StackScope Wider Web only. The "Found via" counts above always show every source. Reset
Altcha has been detected on 32 launches we've crawled, with 32 of those in July 2026 (0.1% of the month's launches so far). The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection was 5 days ago.
It's most commonly paired with Svelte, HSTS, and jQuery.
Countries that use Altcha
Estimated origin for 16 of 32 sites
-
United Kingdom
75.00%
-
Germany
18.75%
-
Canada
6.25%
Share of new launches using Altcha
Each dot is one launch day. Line is the 7-day rolling average.
Security leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | HSTS | 40.14% | 91.24% | |
| #2 |
Cloudflare Bot Management
|
8.06% | 18.32% | |
| #3 |
Google reCAPTCHA
|
1.17% | 2.66% | |
| #4 |
DDoS-Guard
|
0.14% | 0.33% | |
| #5 |
Firebase App Check
|
0.06% | 0.13% | |
| #6 | Altcha Current page | 0.06% | 0.13% |
Percentages show adoption among launches found via StackScope Wider Web: the share of all such launches, and of those using any Security tool. All 46 in Security →
Often used with
| Tool | Launches |
|---|---|
Svelte
|
32 |
| HSTS | 24 |
jQuery
|
22 |
| HTTP/3 | 18 |
Google Tag Manager
|
17 |
Tools most often detected on the same launches as Altcha.
32 sites across the wider web use Altcha
StackScope Wider Web counts newly launched sites that are not indie product launches. They shape the aggregate figures on this page but are never listed individually. How StackScope Discovery works · Back to launches