Developer Tools & Linters
Free browser-based linters, syntax validators, manifest generators, and CLI cheatsheets built for engineers.
Regex Tester & Pattern Builder
Live regex tester with capture group inspector, replacement preview, token cheatsheet, and code generators in JS, Python, Go, Java, and PHP.
Python Regex Tester (re module)
Test Python re patterns with named groups (?P<name>), backreferences, flags (re.I, re.M, re.S), and instant re.compile snippets.
Java Regex Tester (Pattern & Matcher)
Test java.util.regex patterns with named groups, auto-escaped backslashes for Java strings, and matcher.replaceAll previews.
Cron Expression Parser
Translate standard 5-part cron syntax into plain English and calculate the next execution timestamps.
Docker Compose Validator
Validate syntax, service dependencies, port mappings, volumes, and healthchecks in your docker-compose.yml.
Dockerfile Linter & Optimizer
Scan your Dockerfile for security vulnerabilities, unnecessary layer bloat, and cache optimization tips.
Kubernetes YAML Generator
Visually configure Deployments, Services, Ingress, and ConfigMaps and generate production-ready YAML manifests.
YAML Syntax Validator & Formatter
Instantly detect indentation errors, tab characters, and malformed structures in any YAML document.
Docker CLI Cheatsheet
Essential commands for container lifecycle, image management, volume mounts, and network debugging.
Kubernetes (kubectl) Cheatsheet
High-frequency kubectl commands, JSONPath expressions, rollout commands, and debugging recipes.
Terraform Cheatsheet
CLI reference for init, plan, apply, state surgery, workspaces, and environment variables.
Git Cheatsheet
Branching, merging, rebasing, stash operations, reflog disaster recovery, and cherry-picking commands.
Linux & Bash Cheatsheet
SysAdmin commands for file system, permissions, processes, systemd, and network triage.