60 tools · 60 live
Developer Utilities
Practical helpers for regex, Git, network math, docs, and specs.
Regex Tester
Test regular expressions with live matches and flags.
Regex Explainer
Explain regular expression patterns in plain language.
Gitignore Generator
Generate .gitignore files for common stacks.
Chmod Calculator
Convert Unix file permissions between symbolic and octal forms.
MIME Type Lookup
Find MIME types by extension or content type.
IP Subnet Calculator
Calculate CIDR ranges, hosts, and masks.
DNS Lookup
Look up DNS records for domains.
OpenAPI Viewer
Preview OpenAPI and Swagger documents.
GraphQL Query Formatter
Format GraphQL queries and mutations.
README Generator
Generate project README sections and badges.
Git Command Builder
Use git command builder online in a fast, private, browser-based developer workflow.
Git Commit Message Generator
Use git commit message generator online in a fast, private, browser-based developer workflow.
Conventional Commit Builder
Use conventional commit builder online in a fast, private, browser-based developer workflow.
Semver Comparator
Use semver comparator online in a fast, private, browser-based developer workflow.
Semver Bump Calculator
Use semver bump calculator online in a fast, private, browser-based developer workflow.
NPM Package Name Checker
Use npm package name checker online in a fast, private, browser-based developer workflow.
Package Version Comparator
Use package version comparator online in a fast, private, browser-based developer workflow.
Package JSON Script Viewer
Use package json script viewer online in a fast, private, browser-based developer workflow.
Dependency List Formatter
Use dependency list formatter online in a fast, private, browser-based developer workflow.
NPM Install Command Builder
Use npm install command builder online in a fast, private, browser-based developer workflow.
Package Manager Command Converter
Use package manager command converter online in a fast, private, browser-based developer workflow.
Package Version Range Explainer
Use package version range explainer online in a fast, private, browser-based developer workflow.
Docker Run Command Builder
Use docker run command builder online in a fast, private, browser-based developer workflow.
Docker Compose Port Mapper
Use docker compose port mapper online in a fast, private, browser-based developer workflow.
Kubernetes YAML Validator
Use kubernetes yaml validator online in a fast, private, browser-based developer workflow.
Kubernetes Resource Calculator
Use kubernetes resource calculator online in a fast, private, browser-based developer workflow.
Helm Values Viewer
Use helm values viewer online in a fast, private, browser-based developer workflow.
Env Var Diff Tool
Use env var diff tool online in a fast, private, browser-based developer workflow.
Dotenv Validator
Use dotenv validator online in a fast, private, browser-based developer workflow.
Makefile Target Viewer
Use makefile target viewer online in a fast, private, browser-based developer workflow.
CI YAML Validator
Use ci yaml validator online in a fast, private, browser-based developer workflow.
GitHub Actions Workflow Validator
Use github actions workflow validator online in a fast, private, browser-based developer workflow.
GitLab CI Validator
Use gitlab ci validator online in a fast, private, browser-based developer workflow.
Markdown Badge Generator
Use markdown badge generator online in a fast, private, browser-based developer workflow.
License Picker
Use license picker online in a fast, private, browser-based developer workflow.
SPDX License Lookup
Use spdx license lookup online in a fast, private, browser-based developer workflow.
Changelog Generator
Use changelog generator online in a fast, private, browser-based developer workflow.
API Changelog Formatter
Use api changelog formatter online in a fast, private, browser-based developer workflow.
Release Notes Generator
Use release notes generator online in a fast, private, browser-based developer workflow.
Feature Flag Matrix Builder
Use feature flag matrix builder online in a fast, private, browser-based developer workflow.
A B Test Sample Size Calculator
Use a b test sample size calculator online in a fast, private, browser-based developer workflow.
Latency Percentile Calculator
Use latency percentile calculator online in a fast, private, browser-based developer workflow.
Rate Limit Calculator
Use rate limit calculator online in a fast, private, browser-based developer workflow.
Backoff Calculator
Use backoff calculator online in a fast, private, browser-based developer workflow.
Retry Schedule Generator
Use retry schedule generator online in a fast, private, browser-based developer workflow.
Port Availability Checker
Use port availability checker online in a fast, private, browser-based developer workflow.
CIDR Range Splitter
Use cidr range splitter online in a fast, private, browser-based developer workflow.
CIDR Merge Helper
Use cidr merge helper online in a fast, private, browser-based developer workflow.
IPv4 Converter
Use ipv4 converter online in a fast, private, browser-based developer workflow.
IPv6 Converter
Use ipv6 converter online in a fast, private, browser-based developer workflow.
MAC Address Formatter
Use mac address formatter online in a fast, private, browser-based developer workflow.
DNS Record Formatter
Use dns record formatter online in a fast, private, browser-based developer workflow.
DNS Zone File Formatter
Use dns zone file formatter online in a fast, private, browser-based developer workflow.
Hostname Validator
Use hostname validator online in a fast, private, browser-based developer workflow.
URL Redirect Chain Parser
Use url redirect chain parser online in a fast, private, browser-based developer workflow.
UUID Validator
Use uuid validator online in a fast, private, browser-based developer workflow.
ULID Validator
Use ulid validator online in a fast, private, browser-based developer workflow.
Nano ID Generator
Use nano id generator online in a fast, private, browser-based developer workflow.
Mock API Response Generator
Use mock api response generator online in a fast, private, browser-based developer workflow.
Test Data Generator
Use test data generator online in a fast, private, browser-based developer workflow.