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

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

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

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

Policy interest rates from the Federal Reserve, European Central Bank, Bank of England and Riksbank side by side with the latest date and previous value

Search DOAJ open-access journals by topic, title or ISSN - publisher, country, subjects, license, APC charge and maximum fee, peer review type and seal

Search internet radio stations by name, country or genre - stream URL, codec, bitrate, votes, language, tags, homepage and last check status

Search Manifold Markets forecasting questions - crowd probability, volume, 24 hour volume, number of traders, close date, resolution state and link

Search Dryad open research datasets by topic - DOI, title, authors, abstract, field of science, publication date, size, license and download page

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

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

Look up research organisations in the ROR registry - ROR id, type, country, city, website, Wikipedia, GRID, ISNI and Fundref ids for any institution

Risk metrics from a price or return series - annualised return and volatility, Sharpe, Sortino, Calmar, max drawdown, 95 percent VaR, expected shortfall and skew

Search Zenodo datasets, software and papers - DOI, creators, licence, access, views, downloads, file count and size, sorted by relevance, recency or views

FDA CAERS adverse event reports for foods, supplements and cosmetics by product name - reactions, outcomes, dates and consumer age and sex

Bond price from yield or yield to maturity from price with duration, modified duration, convexity, current yield and the price move for a one point yield change

NPV, IRR, profitability index, payback and discounted payback for a cash-flow series with an accept or reject decision and NPV at several discount rates

Maximum home price and loan from income, debts, down payment and rate using the 28/36 rules, with tax, insurance and HOA in the monthly total

Retirement projection from age, savings and monthly saving - nest egg, value in today's dollars, total contributed, growth and sustainable withdrawal income

Break-even units and revenue from fixed costs, price and variable cost, plus contribution margin, target profit units and margin of safety