Altcha

Security Visit altcha.org Offers a free plan

Altcha is a spam and abuse protection solution for websites and apps, offering a privacy-friendly Captcha and other tools designed with GDPR compliance to provide strong security while safeguarding user privacy.

Websites using Altcha

These are the top websites using Altcha based on traffic.

# Website Traffic
1 onetimesecret.com
28%
2 wipo.int
11%
3 ride-ticketing.de
7%
4 connectips.com
6%
5 autoplac.pl
4%
6 krunker.io
4%
7 gouv.fr
4%
8 animebytes.tv
2%
9 clever-cloud.com
2%
10 cultura.gov.it
2%

Get the full list of websites and companies using Altcha.

Altcha reports

Create relevant reports for Altcha to find sales leads or learn more about your target audience.

Example reports
Altcha websites in the United States
Altcha websites in the United Kindom
Email addresses and phone numbers of Altcha customers
Altcha websites with a .com domain
Top 5,000 most visited Altcha websites
5,000 low-traffic Altcha websites
Top 500 websites for every technology in the category Security

Or, Create a custom Altcha report.

Altcha usage trend

This graph shows the growth of Altcha since December 2024.

Altcha demographics

A breakdown of countries and languages used by Altcha websites.

Countries
Languages

Alternatives to Altcha

These are the most popular Altcha alternatives in 2025.

# Technology Compare
1
HSTS		 Altcha vs. HSTS
2
reCAPTCHA		 Altcha vs. reCAPTCHA
3
Cloudflare Bot Management		 Altcha vs. Cloudflare Bot Management
4
Akamai Bot Manager		 Altcha vs. Akamai Bot Manager
5
Sucuri		 Altcha vs. Sucuri

See the full list of Altcha alternatives.

Apps

Wappalyzer works with the tools you use every day.

Chrome

See the technologies of websites you visit in your browser.

Firefox

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Edge

See the technologies of websites you visit in your browser.

Safari

See the technologies of websites you visit in your browser.

Salesforce

See the technology stacks of your leads in your CRM.

HubSpot

See the technology stacks of your leads in your CRM.

Pipedrive

See the technology stacks of your leads in your CRM.

Semrush

See the technology stacks of your clients and prospects in your CRM.

Pabbly

Automated workflows and email marketing.

Zapier

Connect Wappalyzer to the apps you use, no code required.

Make

Connect Wappalyzer to the apps you use, no code required.

Gmail

See the technology stacks of your contacts in Gmail.

iPhone

Wappalyzer in your pocket.

Wappalyzer is trusted by thousands of professionals world-wide

Wappalyzer has proven to be a great tool to help us break down the aggregate analysis of how the web is doing by various technologies. Ilya Grigorik
Principal Engineer at Shopify
These days you need advanced marketing tools to stand out from the competition. Wappalyzer help us do just that. Thomas Alibert
Growth Engineer at PayFit
I use Wappalyzer all the time and it's been invaluable in being relevant in my outreach. Michael Petselas
Customer Growth Specialist at HubSpot
Wappalyzer is an integral part of our sales process, enabling us to optimise lead segmentation at scale. It’s a total game changer for our organisation. Roman Schweiger
Head of Business Development at Boomerank
Wappalyzer has been such a useful part of the HTTP Archive dataset. It's enabled us to slice the data in new ways and discover more interesting insights about the state of the web. Rick Viscomi
Senior DevRel Engineer at Google
Wappalyzer is helping our sales teams to understand prospects better and faster by having a clear view on their tech stack. Rabin Nuchtabek
Chief Growth Engineer at Skedify

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