Developer Tools · Security ToolingstructuralOpen SourceSelf HostedAPIB2C

No Secure Modern Alternative to Tampermonkey Exists

Developers seeking a modern, actively maintained alternative to Tampermonkey face a gap: new contenders are vibe-coded with critical security vulnerabilities including zero sender validation, eval execution in the main world, and unrestricted CORS bypass. The security surface of browser extension userscript managers is inherently high-risk and no vetted modern option has emerged. This leaves power users stuck on aging software or exposed to exploitable alternatives.

1mentions
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5.2

Signal

Visibility

5

Leverage

Impact

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Problem descriptions, scores, analysis, and solution blueprints may be updated as new community data becomes available.