Support and resistance pivot levels from a prior high, low and close in classic, Fibonacci, Camarilla and Woodie variants, with the bias against the pivot.

RSI, MACD, Bollinger Bands, SMA and EMA computed from any list of closing prices you supply, with plain-language overbought and trend signals.

Fibonacci retracement and extension prices for any swing high and low, the 0.618 to 0.65 golden pocket, and where the current price sits among the levels.

Standardize a free-text US address to USPS abbreviations and split it into house number, street, suffix, unit, city, state, ZIP and ZIP+4

Mann-Whitney U test for two samples without normality - U, z, p-value, medians, rank-biserial correlation and the probability one group exceeds the other

Statistical power for a two-sample t-test - sample size per group for a Cohen d, alpha and target power, or the power of a planned sample size

T-test from raw samples - Welch two-sample or one-sample, t, degrees of freedom, p-value, confidence interval, Cohen d and a significance verdict

Translate text to Morse code with the NATO phonetic spelling, or decode Morse back to text, with counts of symbols and unsupported characters

Redact personal data and secrets from text - emails, phones, Luhn-checked cards, IBANs, SSNs, IPs, wallet addresses, API keys, JWTs and private keys

Position size from account equity, risk percent, entry and stop: units, notional, leverage needed and target prices at chosen R multiples.

Screen English text for toxicity - 0 to 100 score and label, matched profanity, insults, harassment, threats and self-harm encouragement, plus shouting

Expand an iCalendar recurrence rule into dates - daily, weekly, monthly and yearly with INTERVAL, BYDAY (like last Friday), BYMONTHDAY, COUNT and UNTIL

Estimate the LLM token count of text with a low to high range, a breakdown by words, numbers, symbols and CJK, and whether it fits a given context window

Turn a phrase like next Friday at 3pm, in 3 weeks or end of next month into an ISO date and time relative to a base, with weekday and ambiguity notes

Rank candidate strings against an input with Jaro-Winkler, Levenshtein, token-set and Soundex scores plus a verdict, for name matching and deduplication

Generate a QR code from text or a URL - SVG, base64 data URI, ASCII art and the raw module matrix, with error correction level, colors and quiet zone

Import landed-cost calculator - customs value, duty, tariff, fees, total cost and per-unit cost

Trading edge from win rate and average win and loss: expectancy, profit factor, breakeven win rate, Kelly fraction and expected losing streaks.

NOAA SPC severe weather outlook at a coordinate - risk category for days 1 to 3 and day 1 tornado, damaging wind and large hail probabilities

Check whether a crawler may fetch a path under a robots.txt per RFC 9309 - matched group and rule, crawl delay and sitemaps, for Googlebot, GPTBot or any agent