CyberChef is a simple, intuitive web app for carrying out all manner of "cyber" operations within a web browser. Runs client-side in your browser via the website or as a downloadable html file.
Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Online
- Self-Hosted

Comprehensive developer utility suite with 12+ tools. Ensures privacy, works offline, offers text conversion, hashing, formatting, and more.
Cost / License
- Free
- Proprietary
Platforms
- Mac


+9
Cryptonite Toolbox offers a comprehensive suite of cryptographic tools. Organized for convenience.
Cost / License
- Paid
- Proprietary
Platforms
- Windows
- Mac


+5
Online tool for inspecting and debugging HTTP requests and checking common cases like headers, gzip compression, HSTS implementations or HTTP redirects. Encode or decode base64 and URL encoding.
Cost / License
- Free
- Proprietary
Platforms
- Online


MiroTools.com is a web-based (SaaS) application all-in-one suite which contains more than 60 different online tools:
Cost / License
- Free
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)



Find and replace in multiple files with regular expressions, multi-line search and replace, Unicode support, preview, and undo.


+2
Online Tools like Beautifiers, Editors, Viewers, Minifier, Validators, Converters for Developers: XML, JSON, CSS, JavaScript, Java, C#, MXML, SQL, CSV, Excel.
Cost / License
- Free
- Proprietary
Platforms
- Online


+1
All-in-one developer toolbox with 25+ tools: JSON/CSV converters, encoders, generators & more. 100% free, no signup, no ads. Everything runs in your browser for complete privacy.
Cost / License
- Free
- Open Source
Platforms
- Online



ToolShelf is a lightweight collection of fast, browser-based developer utilities. All tools run entirely in your browser — no logins, no tracking, and full offline support.
Cost / License
- Free
- Proprietary
Platforms
- Online


+4
StringFlux is a free online tool for developers to simplify string transformations like JSON escape, Base64 encode, URL encode, and more — all in one streamlined, privacy-friendly interface.
Cost / License
- Free
- Proprietary
Platforms
- Online

Cost / License
- Free
- Proprietary
Platforms
- Online
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Linux
- Flathub
- Flatpak


+1
Decode from Base64 format or encode into it with various options. Our extension has an easy-to-use online tool to convert data.
Cost / License
- Free
- Proprietary
Platforms
- Google Chrome

DevUtilHub provides 24+ free online developer tools including regex tester, Base64 encoder/decoder, JWT debugger, JSON formatter, hash generators, and more. All tools run entirely in your browser for maximum privacy and speed. No signup required.
Cost / License
- Free
- Proprietary
Platforms
- Online

Our Base64 Decoder converts Base64 encoded data back to its original format, including text, binary, and images. It’s a fast, free, and easy to use tool.
Cost / License
- Free
- Proprietary
Platforms
- Online


Text Tools is a focused collection of utilities that run directly in your browser. Each tool is crafted for a single job to remove duplicates, fix spacing, change case, split or join lines, encode or decode data and every tool is tuned for accuracy,.
Cost / License
- Free
- Proprietary
Platforms
- Online

Code Beautify or Code Beautifier is a set of online tools that helps you to Beautify, Minify, Uglify, Encode, Decode, Validate, Convert and View code or text to formats like CSS, JSON, JS, Javascript, XML, JSON and CSV.
Cost / License
- Free
- Proprietary
Platforms
- Software as a Service (SaaS)



































