Web

Quick regular expression playground: https://regex101.com/

Convert curl into code: https://curlconverter.com/

JSON Validator: https://jsonlint.com/

Groovy web console: https://groovyconsole.appspot.com/

Github Gists: https://gist.github.com/

WHOIS: https://www.reg.ru/whois/

Temporary Email: https://temp-mail.org/

JSON Resume: https://github.com/jsonresume