Reference & Lookup tools
Searchable references for ports, codes, locations, and standards.
Cargo.toml Parser
Parse Rust Cargo manifests — package, dependencies (with features), dev/build deps, features, workspace.
composer.json Validator
Validate PHP Composer manifests — name, require, autoload, license, stability.
Country Code Lookup
Phone country codes, ISO 3166 alpha-2 / alpha-3, currency codes, and ccTLDs for every country.
DNS Record Types Reference
Searchable reference for every DNS record type — A, AAAA, MX, TXT, SRV, CAA, DNSSEC, SVCB/HTTPS, and more.
go.mod Parser
Parse Go module files — module, go/toolchain version, requires (direct vs indirect), replace, exclude, retract.
HTTP Status Code Reference
Searchable reference of every HTTP status code with descriptions and category.
MIME Type Reference
Searchable reference of common MIME types by extension and category.
NANP Area Code Lookup
Look up North American area codes (US, Canada, Caribbean) by code or by region.
Open Source License Picker
Pick MIT, Apache-2.0, BSD, ISC, MPL, GPL, Unlicense, or CC0 — fill in year + author and copy the full text.
Postal Address Formatter
Format mailing addresses to country conventions — US, UK, Japan, Germany, Brazil, and more.
pyproject.toml Parser
Parse Python pyproject.toml — project metadata, dependencies, optional groups, build system, tool sections.
Python requirements.txt Parser
Parse pip requirements with extras, markers, editable installs, and URL pins. Validate PEP 440 and reformat.
Ruby Gemfile Parser
Parse Ruby Gemfile — source, ruby version, gem declarations, groups, options.
TCP / UDP Port Reference
Searchable reference of well-known and commonly-used network ports.
US ZIP Code Lookup
Look up US ZIP codes by code or by city/state. Starter dataset — covers state capitals and major metros.
World Clock & Timezone Converter
See the current time in any timezone, or convert a moment from one zone to another.