Free Online Developer & DevOps Tools
Browse 100 free utilities for development, DevOps, security, QA, and tech workflows. Filter by category or search by name, open any tool, and use the reference guide on each page when you need a quick refresher.
Your data stays in your browser
Sensitive input - tokens, passwords, keys and configs are processed locally in your browser and is never sent to a server.
1–10 of 100
JWT Debugger
SecurityDecode JWT tokens and inspect header, payload, and signature.
Cron Predictor
DevOpsCalculate the next 5 run times from a cron expression.
K8s YAML Linter
DevOpsValidate Kubernetes manifest YAML for syntax and structure.
Multi-Converter
DevelopmentConvert between JSON, YAML, TOML, and XML instantly.
SQL Prettifier
DevelopmentFormat messy SQL queries with proper indentation.
Base64 Gzip Extractor
DevOpsDecompress base64-encoded gzip data in the browser.
CIDR Visualizer
DevOpsAnalyze IPv4 CIDR blocks, subnets, and host ranges.
RSA Key Generator
SecurityGenerate RSA key pairs locally using Web Crypto.
Bcrypt Hash Tester
SecurityVerify plaintext passwords against bcrypt hashes.
Regex Matcher
DevelopmentTest regex patterns with real-time match highlighting.
1–10 of 100