RC
reCAPTCHA v3 Popular

Used by small-medium websites, forms, login & registration pages

GoogleYouTubeLinkedInTwitchEAEpic Games+9
H
hCaptcha Popular

Used by privacy-focused sites, Cloudflare default captcha alternative

CloudflareDiscordEpic GamesCoinbaseNordVPNHostinger+6
CF
Cloudflare Turnstile Popular

Used by Cloudflare-hosted sites, invisible verification experience

CloudflareDHLNotionCanvaVercelGitLab+6
AK
Akamai Bot Manager

Used by airlines, retail e-commerce, ticketing & banking

NikeAdidasDelta AirlinesUnited AirlinesUSPSHome Depot+8
AK
Akamai sec_cpt

Akamai secondary verification triggered by suspicious traffic

NikeAdidasDelta AirlinesHiltonFoot LockerJCPenney+4
PX
PerimeterX Silent

Used by e-commerce, sneaker sites, real estate & job platforms

ZillowCraigslistIndeedStockXPoshmarkZipRecruiter+6
PX
PerimeterX Challenge

PerimeterX interactive challenge when bot detection triggers

ZillowCraigslistIndeedStockXWayfairChegg+4
KS
Kasada ct

Used by ticketing, streaming & betting platforms

Kickbet365DraftKingsFanDuelTwitchPlayStation+4
KS
Kasada cd

Kasada advanced protection mode with stronger encrypted challenges

Kickbet365DraftKingsFanDuelPlayStationCanada Goose+4
DD
DataDome Silent

Used by European e-commerce, classifieds & media platforms

RedditAllTrailsLeboncoinRakutenSoundCloudTripAdvisor+6
SH
Shape Security

Used by banks, financial institutions & major airlines

Southwest AirlinesAlaska AirlinesStarbucksCitibankCapital OneMacy's+6
FC
Funcaptcha

Used by social platform logins & game account registration

Microsoft / OutlookRobloxEA SportsGitHubSnapchatLinkedIn+6
VC
Vercel Challenge

Used by Vercel-deployed SaaS & developer sites

VercelNext.js AppsTikTok WebHashnodeCal.comDub.co+4
CT
Castle

Used by SaaS platforms for account protection & anti-fraud

CartaGustoPlaidMercuryLatticeBrex+4
R84
Reese84

Used by finance, government & enterprise portals

GlassdoorWestern UnionSiemensSingapore AirlinesTurkish AirlinesYamaha+4
UT
UTMVC

Imperva legacy protection, used by enterprise/government sites

GlassdoorIndeedKrogerAutoTraderCars.comTrulia+4
SB
Sbsd

Used by Ticketmaster and other ticketing platforms

StubhubTicketmasterVivid SeatsSeatGeekAXSEventbrite+4
H
hCaptcha Pro

hCaptcha Enterprise with harder interactive challenges

Cloudflare EnterpriseCoinbaseDiscordEpic GamesBinanceNordVPN+2
KS
Kasada TL Payload

Kasada TL Payload generation for advanced anti-detection

Kickbet365DraftKingsFanDuelPlayStationTwitch
CF
Cloudflare WAF

Cloudflare WAF 5-second shield / JS Challenge, widest global coverage

CloudflareShopifyMediumDiscordOpenAINotion+2
DD
DataDome Invisible

DataDome invisible captcha, backend auto-verification

RedditLeboncoinSoundCloudRakutenVintedAllTrails+2
DD
DataDome Slider

DataDome slider captcha, interactive drag-to-verify

RedditLeboncoinRakutenVintedHermesTripAdvisor
AW
AWS WAF

Amazon Web Services WAF protection for AWS-hosted websites

AmazonTwitchIMDbAudibleZapposNetflix+6
CX
CaptchaFox

Privacy-first captcha, GDPR-compliant alternative

ZalandoOttoMediaMarktBooking.comDeutsche TelekomSiemens+6
FT
Forter

E-commerce anti-fraud platform, used at checkout

NordstromPricelineInstacartAbercrombieFanaticsSephora+6
TM
ThreatMetrix

LexisNexis device fingerprinting & risk engine for finance

ChaseWells FargoBank of AmericaFidelityPayPalCoinbase+6
TL
TLS Forward

TLS fingerprint forwarding proxy, bypasses JA3/JA4 detection

CloudflareAmazonNikeGoogleDiscordShopify+6