YCW16· DevtoolsCastle
Block bots & bad behavior
ActiveChecked 20h ago
Founders
Not read from YC yet; the weekly run fills these in.
Same space
Adjacent
Overlapping tags, a different niche.
SmyteW15Smyte stops bad actors on social networks and marketplaces.Shared: security, fraud detectionAcquired
GolfX25Agentic AI Security and GovernanceShared: developer tools, securityActive
EscapeW23Offensive security for the teams that are 100x outnumberedShared: developer tools, securityActive
ZeroPathS24Automatically find and fix your software vulnerabilitiesShared: developer tools, securityActive
Better AuthX25The authentication framework for TypeScriptShared: developer tools, securityActive
Also from W16 in Developer tools
Batchmates in Winter 2016.
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RedspreadW16Version control for software environmentsAcquired
ThunkableW16Thunkable is the no-code platform to build powerful native mobile appsActive
ChatfuelW16Platform to easily create chatbots to engage with audiences on…Active
MioW16Mio powers seamless communication between workplace chat apps.Active
About Castle
Instantly stop automated and human-originated account takeovers, fake accounts, and any behavior that violates your platform policies.
San Francisco, CA, USA; Remote
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.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.