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MightyCaptcha

Freemium#23 of 32 in CAPTCHA Software

MightyCaptcha: A focused CAPTCHA service with a free plan and paid tiers from $4 per month. Ranked #23 of 32 in CAPTCHA Software by our editors (6.7/10); pricing: Free plan; best for small websites using proof-of-work checks.

6.7/10Editor score

Visit MightyCaptcha

MightyCaptcha6.7 Visit MightyCaptcha

At a glance

Editor score
6.7 / 10
Pricing
Free plan
Best for
Small websites using proof-of-work checks
Free plan
Yes
Paid from
$4/mo
CAPTCHA modes
Proof-of-work
Facts checked
22 Oct 2026

Where it wins
- Silent browser-based SHA-256 challenges require no visitor interaction
- Unlimited registered domains are included on every plan
- Static-site and server-side integrations plus verification APIs
Where it doesn't
- Its CAPTCHA mode is limited to proof-of-work
- No audio challenge is available
- Support is by email and documentation, not 24/7

Our verdict on MightyCaptcha

MightyCaptcha is a hosted CAPTCHA service for developers protecting website forms from automated submissions. It uses a silent, browser-based proof-of-work challenge, so visitors do not need to solve image puzzles or interact with a challenge. Its focus on this single approach makes it a fit for small sites that want a low-cost check and can integrate JavaScript or server-side verification. Sites that need multiple challenge formats should look for a broader CAPTCHA tool.

The published plans show a Free tier at $0 per month, Starter at $4 per month, and Growth at $12 per month. Free includes unlimited registered domains, both integration modes, dashboard analytics, and usage alerts at 80%. Starter adds 10× more verifications than Free, a grace period at the limit, and email alerts at 80%, 100%, and 105%. Growth adds 5× more verifications than Starter and API automation. All plans include unlimited registered domains; the paid tiers distinguish themselves through verification volume and quota-management features.

Integration options include HTML/JavaScript, Node.js, Cloudflare Workers, and REST API. Static-site and server-side modes, a POST /verify endpoint, and APIs for domain registration and cancellation give developers options for embedding checks and managing domains programmatically. Per-domain analytics and usage quotas support monitoring. MightyCaptcha states that it uses no cookies or third-party requests, and lists GDPR compliance. Support is through email and documentation, rather than 24/7 coverage. Choose it when silent proof-of-work and domain management meet the need; choose an alternative if audio or other CAPTCHA modes are required.

Your product? Our editors can test MightyCaptcha in depth and publish a review, labelled as paid · from $149/mo →

MightyCaptcha pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 22 Oct 2026.

See plans on mightycaptcha.com

All 3 MightyCaptcha plans and prices →

MightyCaptcha fact sheet

Free plan	Yes
Paid from	$4/mo
CAPTCHA modes	Proof-of-work
Audio challenge	No
Accessibility options	Not verified
Monthly verifications	10000 /mo
SDK platforms	Web
Privacy controls	Yes
Deployment	Cloud, Browser extension
Platforms	Web
Compliance & security	GDPR
Support	Email, Docs
Built for	Solo, Small business, Mid-market (editorial estimate)
Integrations	4 integrations: HTML/JavaScript, Node.js, Cloudflare Workers, REST API
Pricing	Free plan (source)
Website	mightycaptcha.com
Facts checked	22 Oct 2026

MightyCaptcha integrations

MightyCaptcha lists 4 integrations on its own site.

HTML/JavaScript
Node.js
Cloudflare Workers
REST API

Alternatives to MightyCaptcha

See all MightyCaptcha alternatives →

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The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used MightyCaptcha for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

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Featured on iTechGuides

MightyCaptcha is listed in our CAPTCHA Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 29 Oct 2026 · How we research and update