Every server in the registry, with its latest security score.
Norwegian company registry: search entities, read details and see registered roles - keyless.
Validate Bitcoin addresses offline with real base58check and bech32/bech32m checksums
Cat facts and breed data from catfact.ninja: a random fact, paging and every breed
cBioPortal cancer genomics: cancer types, gene lookup and public cancer studies
US Census geocoder: addresses to coordinates, reverse geocoding and census geography lookup.
Chronicling America: search historical US newspaper pages and titles at the Library of Congress.
Cleveland Museum of Art open access: 60,000+ works, CC0 images, department and artist filtering.
Look up LOINC lab codes, ICD-10-CM diagnoses and condition names from the NIH Clinical Tables API.
WCAG contrast ratios, AA/AAA checks and accessible colour suggestions for hex pairs - fully local.
Simulate colour-vision deficiency on hex colours and palettes
Exact combinatorics offline with BigInt: factorials, nCr, nPr, Fibonacci and permutations
CRC-32, CRC-32C, CRC-16 variants and Adler-32 offline, with checksum check values verified, keyless.
Cron expression helper: explain a schedule in plain words and list its next run times, with
CSV work offline: column summary with detected types, rows as JSON, and simple filtering by column
MITRE CWE weakness records: descriptions, mitigations, consequences and the weakness hierarchy.
Business-day counting, date shifting and calendar differences with holiday support - fully local.
Live DNS lookups: A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, SRV and PTR reverse lookups
Docker Hub: image search, details, tags with sizes and digests, and official image ranking.
Dog photos from dog.ceo: a random image, every breed with sub-breeds and breed galleries
US drinking water systems from EPA SDWIS: look up a public water system, its violations and its.
FDA drug shortage database: search shortages by drug, status, manufacturer or NDC - keyless.
European Central Bank reference rates, rate history and the ECB policy rate - keyless.
EBI Electron Microscopy Data Bank: search cryo-EM maps and read resolution and method
Byte order and integer tools offline: swap endianness, read raw bytes and inspect two's complement
European electricity data: live generation mix, day-ahead prices, installed capacity and renewable.
17,651–17,675 of 58,926 servers
