Free
CyberChef
Open SourceEncoding & Decoding
The Cyber Swiss Army Knife: encode, decode, hash and transform data in the browser.
encoderdecoderhashbase64
Browse the complete directory — use filters to narrow down.
Encoding & Decoding
The Cyber Swiss Army Knife: encode, decode, hash and transform data in the browser.
Orchestration · DevOps
The open-source system for automating container orchestration.
Relational · Database
The world's most advanced open-source relational database.
Regex
The most popular regex tester and debugger with live explanation.
Passwords & IDs · Security
Generate strong, random passwords free from 1Password.
Color Tools
Adobe's color wheel, palette extraction and accessibility tools.
Practice & Challenges · Documentation & Learning
Annual series of fun programming puzzles every December.
Generators · CSS Tools
Play with ready-made CSS animations and export the code.
Pipelines & ETL · Data & Analytics
The standard open-source orchestrator for data pipelines.
Other Formats · Data Formats
Data serialization system commonly used with Kafka.
NoSQL · Database
Distributed, wide-column NoSQL database for massive scale.
Queues & Streaming · Database
The industry-standard distributed event streaming platform.
Dashboards & BI · Data & Analytics
Powerful open-source data exploration and visualization platform.
CI/CD · DevOps
Declarative GitOps continuous delivery for Kubernetes.
Documentation Generators · PDF & Documents
Astro's documentation framework — fast, accessible docs sites with search, i18n and sidebar tooling built in.
Design Systems · Design & Prototyping
Atlassian's design system with components and content guidelines.
Converters · Encoding & Decoding
Simple, fast online Base64 decoder and encoder.
Converters · Encoding & Decoding
Base64 encode and decode for text, files, URLs and images.
Learning & Reference · CSS Tools
Browser support tables for HTML, CSS and JavaScript features.
Design Systems · Design & Prototyping
IBM's open-source design system for products and experiences.
Text & Diff · Developer Utilities
Create and share beautiful images of your source code.
Browser DevTools · Development Environment
The browser console's full documentation — elements, network, performance, memory and Lighthouse panels.
Generators · CSS Tools
Visual clip-path shape maker generating CSS polygon values.
Color Tools
Color blindness simulator: upload an image and preview eight vision types.