
Amazon CloudFront
KeyCDN
Akamai
CDN77
Fastly
Sucuri
Netlify
Cloudflare is a global network designed to make everything you connect to the Internet secure, private, fast, and reliable.

reCAPTCHA
hCaptcha
Cloudflare Turnstile
Akismet
Private Captcha
mosparo
Cap Captcha
ALTCHA is a free CAPTCHA alternative that uses a proof-of-work mechanism to protect your website, and online services from spam.

Which is more popular?
Based on our record, CloudFlare seems to be a lot more popular than ALTCHA. While we know about 110 links to CloudFlare, we've tracked only 4 mentions of ALTCHA.
Website, pricing, platforms and company facts side by side.
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| Website | cloudflare.com | altcha.org |
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| Listed in |
In their own words, as submitted to SaaSHub.


No description of CloudFlare yet.
ALTCHA uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. Unlike other solutions, ALTCHA is free, open-source and self-hosted, without external services, does not use cookies nor fingerprinting, does not track users, and is fully...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
CloudFlare is recommended for businesses and individuals seeking enhanced website security, faster load times, and improved traffic management. It is particularly beneficial for e-commerce sites, content-heavy websites, and organizations experiencing high traffic volumes or at risk of cyber-attacks.
No analysis of ALTCHA yet.
Walkthroughs and reviews on video.
CloudFlare Review - Beginners to Expert Guide PREVIEW by Bizversity.com
More videos
No ALTCHA videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CloudFlare and ALTCHA.
CloudFlare's answer
ALTCHA's answer:
Here are some key reasons why a person should choose ALTCHA over its competitors:
So in summary, ALTCHA's privacy compliance, open design, accessibility, machine compatibility and modern approach give it clear advantages over competing captcha solutions.
ALTCHA's answer:
What makes ALTCHA unique is that it is free, open-source and self-hosted, without external services, does not use cookies nor fingerprinting, does not track users, and is fully compliant with GDPR. Unlike other captcha solutions, ALTCHA does not require users to solve puzzles or captchas and uses a proof-of-work mechanism instead.
ALTCHA's answer:
JavaScript and Svelte.
ALTCHA's answer:
Our primary audience for ALTCHA Forms includes enterprises, medium and small businesses, non-profits, and individuals who need a reliable, secure, and compliant solution for data collection and management. Whether you're a large corporation dealing with extensive regulatory requirements, a small business looking to protect customer and employee data, a non-profit organization managing sensitive information, or an individual seeking robust data security, ALTCHA Forms provides the tools and features necessary to meet your needs. With a focus on compliance, user-friendly design, and advanced security measures, our platform is tailored to support diverse users in navigating complex regulatory landscapes and ensuring data protection.
Share your experience with using CloudFlare and ALTCHA. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


The reason the shelf looks so full is that nearly every major data platform now ships an MCP, and they are overwhelmingly access servers. Oracle exposes its database to agents through SQLcl (oracle.com/mcp)....
Cloudflare is a web infrastructure and security company that offers content delivery network (CDN), DNS, DDoS protection, and web application firewall (WAF) services. Cloudflare’s solutions help improve website...
Cloudflare offers the tariffs Free, Pro and Business. If the standard equipment of a CDN is sufficient for you, you are well supplied with the free version. If you need business-suitable solutions, you pay 20 Euros...
We have no reviews of ALTCHA yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


The primary entry point for the service is handled through Cloudflare Workers. I've been super happy with this choice for the project core. I'm taking advantage of KV Storage, D1 Database, Analytics Engine, rate limiting, and edge-local... - Source: dev.to / 18 days ago
Var request = new HttpRequestMessage(HttpMethod.Get, "https://cloudflare.com") { Version = HttpVersion.Version30, VersionPolicy = HttpVersionPolicy.RequestVersionOrHigher }; Var response = await... - Source: dev.to / about 2 months ago
Cloudflare | Systems or ML Engineer, Workers AI | Austin, TX or London, UK or San Francisco, CA (Hybrid) | Full-Time | https://cloudflare.com Cloudflare is building across the entire AI stack. Here are some exciting things that we have... - Source: Hacker News / 7 months ago
ALTCHA won on the boring things. It is open source, self-hosted and collects nothing, and it ships official libraries in both Go and PHP, the two languages our two layers already speak. So the same protocol runs twice on every store, by... - Source: dev.to / 11 days ago
The captcha on orkestr is Altcha. Self-hosted, no third-party JS, no Google, no behavioral tracking. Users don't see a puzzle. There's a single checkbox and a quiet "verifying..." while the browser does some math. About a second, total. - Source: dev.to / 5 months ago
Here's how PoW works for form protection (using the ALTCHA wire format):. - Source: dev.to / 7 months ago
When comparing CloudFlare and ALTCHA, you can also consider the following products.

Amazon CloudFront is a content delivery web service.
Compare Amazon CloudFront to CloudFlare or ALTCHA:

reCAPTCHA is a free security service that protects your websites from spam and abuse.
Compare reCAPTCHA to CloudFlare or ALTCHA:

KeyCDN is a high-performance Content Delivery Network (CDN). Lowest price globally at $0.04/GB with HTTP/2 Support and free Origin Shield.
Compare KeyCDN to CloudFlare or ALTCHA:

Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.
Compare hCaptcha to CloudFlare or ALTCHA:

Akamai is the leading content delivery network (CDN) services provider for media and software delivery, and cloud security solutions.
Compare Akamai to CloudFlare or ALTCHA:

Cloudflare's service for any company to replace CAPTCHAs and deliver a better experience to web visitors.
Compare Cloudflare Turnstile to CloudFlare or ALTCHA: