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Sites using Altcha

3 launches via StackScope Discovery Category: Security #9 of 23 in Security First seen: Jul 9, 2026 Last seen: Jul 14, 2026

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

View: Launch platforms All sources StackScope Discovery StackScope Wider Web

Figures on this page reflect launches found via StackScope Discovery only. The "Found via" counts above always show every source. Reset

Last 7 days 0.0% +0.0pp
Most used with Svelte, Cloudflare DNS, Cloudflare

Altcha has been detected on 3 launches since first appearing in July 2026. Most recent detection: Treelume — семейное древо, 4 days ago.

It's most commonly paired with Svelte, Cloudflare DNS, and Cloudflare.

Share of new launches using Altcha

Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.

0.0%
last 7 days
+0.0pp vs prior week
0.0%
July so far
3 of 20,135 launches
3
launches all time
since Jul 2026
Altcha daily detection trend 5% 2% 0% Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery. Jun 19 · 0 / 1 = 0.0% (low-volume day) Jun 21 · 0 / 1 = 0.0% (low-volume day) Jun 22 · 0 / 1 = 0.0% (low-volume day) Jun 23 · 0 / 1 = 0.0% (low-volume day) Jun 24 · 0 / 1 = 0.0% (low-volume day) Jul 7 · 0 / 55 = 0.0% Jul 8 · 0 / 3563 = 0.0% Jul 9 · 1 / 6590 = 0.0% Jul 10 · 1 / 4299 = 0.0% Jul 11 · 0 / 1562 = 0.0% Jul 12 · 0 / 1582 = 0.0% Jul 13 · 0 / 1408 = 0.0% Jul 14 · 1 / 1024 = 0.1% Jul 15 · 0 / 26 = 0.0% (low-volume day) Jul 16 · 0 / 17 = 0.0% (low-volume day) Jul 17 · 0 / 9 = 0.0% (low-volume day)
Jun 19, 2026 16 days · 8 low-volume (grey) Jul 17, 2026

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 63.07% 96.40%
#2 Cloudflare Bot Management 14.57% 22.27%
#3 Google reCAPTCHA 0.51% 0.77%
#4 Firebase App Check 0.20% 0.30%
#5 PerimeterX 0.06% 0.09%
…
#9 Altcha Current page 0.01% 0.02%

Percentages show adoption among launches found via StackScope Discovery: the share of all such launches, and of those using any Security tool. All 23 in Security →

Often used with

Tool Launches
Svelte 3
Cloudflare DNS 2
Cloudflare 2
Vite 2
Google Fonts 2

Tools most often detected on the same launches as Altcha.

Most recent of 3 launches using Altcha found via StackScope Discovery

Treelume — семейное древо Jul 14, 2026 SubmissionBuddy — form ingestion backend for static sites Jul 10, 2026 Developer Tools Hungry Machines — Home Energy Automation and Optimization Jul 9, 2026
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