Castle

YC W16 · Active · Block bots & bad behavior

Competitors

Companies closest to Castle
Company	Category	Status	Program
SmyteShared: fraud detection, security, badAcquiredOther	Other	Acquired	YCW15
KeyriShared: account takeovers, security, badAcquiredOther	Other	Acquired	YCS21

Adjacent

Companies next to Castle
Company	Category	Status	Program
ObservaShared: security, badInactiveOther	Other	Inactive	YCW21
Gamma NetworksShared: security, behaviorAcquiredOther	Other	Acquired	SPC2018
GolfShared: security, policyActiveAI, Devtools	AI, Devtools	Active	YCX25
CloudanixShared: security, accountActiveDevtools	Devtools	Active	YCS21
SocketShared: security, stopNot statedOther	Other	Not stated	SPC2020

Also from W16 in Developer tools

All of W16

Company	Category	Status
GitPrimeVisibility and analytics for software development leaders.AcquiredDevtools	Devtools	Acquired
MuxVideo infrastructure for developersActiveDevtools	Devtools	Active
RedspreadVersion control for software environmentsAcquiredDevtools	Devtools	Acquired
ThunkableThunkable is the no-code platform to build powerful native mobile appsActiveDevtools	Devtools	Active
ChatfuelPlatform to easily create chatbots to engage with audiences on…ActiveDevtools	Devtools	Active
MioMio powers seamless communication between workplace chat apps.ActiveDevtools	Devtools	Active

About Castle

Instantly stop automated and human-originated account takeovers, fake accounts, and any behavior that violates your platform policies.

YC batch: W16 · Winter 2016
Status, per YC: Active
Category: Developer tools
Team size: 20
Location: San Francisco, CA, USA; Remote
Checked: 1h ago

YC tags: Developer Tools, SaaS, Security, Fraud Detection

Castle in W16: 122 companies, 18% AI

Castle: questions

Which YC batch was Castle in?

Castle was in Y Combinator's Winter 2016 batch (W16).

Is Castle still active?

Y Combinator lists Castle as active.

Where is Castle based?

Castle lists San Francisco, CA, USA; Remote as its location on YC's directory.

Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.