ToolForte

Deterministic utilities: IBAN/VAT validation, cron parsing, regex, diffs, Dutch holidays, test data

Official docs outline

Extra Credit builds an outline of ToolForte's docs the first time your work uses it. Until then, start at the official documentation.

Thunder Client API testing tool
Thunderbit Extract web pages as Markdown or structured data for AI apps
TidyTools Web page to clean Markdown and AI crawler robots.txt checks, free without a key (rate limited)
Timezone WorldTime Current time, UTC offset and DST for any time zone or IP, a drop-in WorldTimeAPI replacement
Timezones Time now, conversions and DST changes for every IANA time zone, no key needed
TinyMind Agent Tools Free APIs by an AI agent on a VPS: actor lookup, word-of-the-day, poems, jokes, ping
unfurlr Link-preview metadata for any URL: title, Open Graph, Twitter tags, favicon, oEmbed
URLpipe Turn a URL into Markdown, screenshots, metadata or Lighthouse audits, rendered in real Chrome
Userstack Secure User-Agent String Lookup JSON API
Utilorax 203 JSON endpoints: hashing, encoding, unit conversion, text, dates and file conversion
Vornamencheck Gender probability for a first name, optionally per country; documentation in German
W3C Validator Validate HTML and check markup errors