Alternatives

Products that do what JSShield — Malicious JavaScript Detector does

Security Tool

1. 1SO
   ScriptObservatory.org – How much malicious JavaScript goes unnoticed?▲38

   2015 · scriptobservatory.org

2. 2J1
   Javalin 1.0 – A Kotlin/Java web framework▲271

   2017 · javalin.io

3. 3JA
   jTools – a collection of JavaScript web components with MIT license▲106

   2019 · bossanova.uk

4. 4AL
   A library to record and intercept JavaScript at runtime▲118

   2017 · maierfelix.github.io

5. 5JA
   JSRobot – A platform game you play by coding in JavaScript▲79

   2017 · github.com

6. 6SS
   Socket – Secure your JavaScript supply chain▲133

   Excited to share the project I've been working on for the past 7 months! We've seen nearly weekly attacks against the open source software supply chain. I saw the seeds of this trend start in the mid 2015s as an open source maintainer and I've watched it only get worse over the years. I finally decided to try to solve this problem. Socket is taking an entirely new approach to one of the hardest problems in security in a stagnant part of the industry that has historically been obsessed with just reporting on known vulnerabilities. Unlike other scanning tools, Socket actually analyzes the…

   2022 · socket.dev

7. 7
   Jsblocks▲97

   Faster than AngularJS and ReactJS. Better MV-ish Framework.

   2015

8. 8MS
   MCP-Shield – Detect security issues in MCP servers▲134

   I noticed the growing security concerns around MCP (https://news.ycombinator.com/item?id=43600192) and built an open source tool that can detect several patterns of tool poisoning attacks, exfiltration channels and cross-origin manipulations. MCP-Shield scans your installed servers (Cursor, Claude Desktop, etc.) and shows what each tool is trying to do at the instruction level, beyond just the API surface. It catches hidden instructions that try to read sensitive files, shadow other tools' behavior, or exfiltrate data. Example of what it detects: - Hidden instructions…

   2025 · github.com

9. 9AC
   A command-line utility-belt for hacking JSON and Javascript▲68

   2012 · github.com

10. 10DA
    Detecting adblock, without JavaScript, by abusing HTTP 103 responses▲108

    2024 · github.com

11. 11MJ
    Matches.js -- Powerful Pattern Matching for Javascript▲96

    2012 · github.com

12. 12MJ
    MMOsteroids: JS, Go, and Webrtc▲86

    2017 · emergencevector.com

13. 13AC
    A Chrome extension that tracks front-end JavaScript at runtime▲95

    2018 · github.com

14. 14LJ
    libRmath.js – A port of R's Nmath numeric library to JavaScript▲80

    2018 · github.com

15. 15DC
    DFPM – Chrome extension to detect JavaScript fingerprinting▲25

    2018 · github.com

16. 16BI
    Blunders.io, a tool to profile JVMs in production▲46

    2020 · blunders.io

17. 17FA
    Fez, a file-based build tool for JavaScript▲70

    2014 · isaacbw.com

18. 18BJ
    Brutal.js – a small framework for building brutalist web applications▲62

    2018 · github.com

19. 19
    JavaScript and CSS Obfuscator▲6

    High level protection

    Oct 2025

20. 20
    KryShield▲2

    Analyze. Detect. Protect.

    Jul 2026 · kryshield.base44.app

21. 21OA
    OxJS - a JavaScript Library for Web Applications▲44

    2012 · oxjs.org

22. 22JI
    JWT Inspector – A Chrome Extension for Debugging and Working with JWTs▲5

    2016 · jwtinspector.io

23. 23JA
    JSLike, a CSP-Safe Interpreter for JS, TS, JSX, TSX in JS▲6

    May 2026 · github.com

24. 24CA
    Corrode – A batteries-included js-library for reading binary data▲34

    2016 · github.com

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