Keyword and key phrase extraction from text with relevance scores (RAKE)

ClinicalTrials.gov study search by condition, drug or keyword - NCT id, status, phase, sponsor, enrollment, conditions and start date, filter by recruiting

Search Wikimedia Commons images - licence name and URL, author credit, description, dimensions, original file URL and 640px thumbnail for each file

Matrix calculator for up to 8x8 - determinant, inverse, rank, trace, transpose and the solution of the linear system Ax = b with a square matrix

Search Creative Commons images and audio from Openverse - licence and licence URL, creator, ready-to-use attribution text, provider, dimensions and file URL

Convert annual salary to hourly, weekly and monthly gross equivalents

Tax-inclusive price calculator - pre-tax amount and embedded tax from a total and rate

Check an IP against the Feodo Tracker botnet C2 list, Emerging Threats compromised hosts and the Tor exit list with a combined verdict and matches

Map a medical condition name to ICD-10-CM and ICD-9 codes with consumer-friendly names and synonyms using the NLM Clinical Tables conditions list

Prescribable drug names from NLM RxTerms with route, available strengths, dose forms and RxCUI identifiers for medication autocomplete and lookup

Binomial, Poisson and normal distribution probabilities - exact, at most, at least, ranges, z-scores and quantiles with mean and standard deviation

Sales tax calculator from subtotal and rate - tax and total

US nonprofit organization search by name and state - EIN, city, NTEE category and tax-exempt status from IRS Form 990 data via ProPublica Nonprofit Explorer

Check whether an IP is a current Tor exit node against the Tor Project bulk exit list, with the list size and a plain-language verdict for fraud screening

Search the French open data portal data.gouv.fr - dataset title, description, publishing organization, license, update frequency, formats, views and link

NY Fed overnight reference rates - SOFR, EFFR, OBFR, TGCR and BGCR with percentiles, volume, change versus the prior day, the fed funds target range and recent history

Lobsters front page or any tag feed - hottest or newest stories with score, comment count, tags, submitter and discussion link

Find a legal free full text for any DOI via Unpaywall - open access status, best PDF link, host, version, licence and alternate repository copies

Wikipedia articles near a coordinate within a radius - title, short description, summary, distance in metres, position and Wikidata id, nearest first

Search Europe PMC biomedical literature - title, authors, journal, year, citation count, open access flag, PMID, PMCID, DOI, MeSH terms and abstract