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
Altcha has been detected on 3 launches since first appearing in May 2026. Most recent detection: Squidir, 2 days ago.
It's most commonly paired with Tailwind CSS, Google Search Console, and Google Analytics.
Share of new launches using Altcha
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
How StackScope detects technologies
⋮ Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery.
Security leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – | HSTS | 60.45% | 93.30% |
| #2 | – |
Cloudflare Bot Management
|
13.33% | 20.57% |
| #3 | – |
Google reCAPTCHA
|
1.71% | 2.63% |
| #4 | – |
Firebase App Check
|
0.16% | 0.25% |
| #5 | – |
PerimeterX
|
0.10% | 0.15% |
| … | ||||
| #33 | Altcha Current page | <0.01% | 0.01% | |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Security tool. All 75 in Security →
Often used with
| Tool | Launches |
|---|---|
Tailwind CSS
|
3 |
Google Search Console
|
2 |
Google Analytics
|
2 |
Google Tag Manager
|
2 |
jsDelivr
|
2 |
Tools most often detected on the same launches as Altcha.
