CapyToolkit icon
CapyToolkit icon

CapyToolkit

CapyToolkit is a collection of 45+ free browser tools engineered to run entirely client-side. All operations execute locally via native browser APIs, Web Workers, and WASM, ensuring that data, logs, and cryptographic keys never reach an external server.

CapyToolkit homepage: 40+ free browser-based tools across 8 categories

Cost / License

  • Free
  • Proprietary

Platforms

  • Windows
  • Online
Full tools catalog (1 of 2): hardware, developer, and security tools
Full tools catalog (2 of 2): audio, math, text, design, and network tools
+3
Gamepad & Joystick Drift Tester: spot analog stick drift and dead zones in real time
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CapyToolkit News & Activities

Recent activities

  • MindFlow icon
    MindFlow added CapyToolkit as alternative to MindFlow
  • Sip icon
    CapyToolkit added CapyToolkit as alternative to Sip and Colorpicker Desktop App
  • AI Text Detector icon
    AI Detect added CapyToolkit as alternative to AI Text Detector
  • Guest reviewed CapyToolkit  

    I like CapyToolkit for being privacy oriented set of browser utilities. I often use their SQL tool locally and what's best it's lightweight and works offline. The developer fixed issue next day so big plus for this. UI could be slightly better but still it's ok after you get used to it.

  • DevT Pro icon
    Mohammed Aadhil added CapyToolkit as alternative to DevT Pro
  • CapyToolkit updated CapyToolkit
  • CapyToolkit liked CapyToolkit
  • CapyToolkit added CapyToolkit
  • CyberChef icon
    CapyToolkit added CapyToolkit as alternative to CyberChef, DevToys, Omni Tools, DevUtils and 40 more

CapyToolkit information

Our users have written 1 comments and reviews about CapyToolkit, and it has gotten 1 likes

CapyToolkit was added to AlternativeTo by CapyToolkit on and this page was last updated .

Comments and Reviews

   
Guest
0

I like CapyToolkit for being privacy oriented set of browser utilities. I often use their SQL tool locally and what's best it's lightweight and works offline. The developer fixed issue next day so big plus for this. UI could be slightly better but still it's ok after you get used to it.

Review from a new or low-activity account — shown here, but not counted in the app rating.

Official Links

AppStores & Other Links

Download from Microsoft Store

What is CapyToolkit?

CapyToolkit is a collection of 45+ free browser tools engineered to run entirely client-side. All operations execute locally via native browser APIs, Web Workers, and WASM, ensuring that data, logs, and cryptographic keys never reach an external server.

The catalog covers:

  • Hardware Diagnostics: Fullscreen dead-pixel checking, gamepad drift inspection, mouse polling rate testing, and audio latency measurement.
  • Developer Parsers: Local JSON formatting, JWT decoding, regex debugging, and running offline SQL queries over local Parquet or CSV files using DuckDB WASM.
  • Security Utilities: EXIF metadata removal, automated PII scrubbing, and offline document text redaction via Tesseract WASM.

The platform requires no user accounts, is fully functional offline as a PWA, and explicitly blocks analytics scripts within all tool areas.