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Radio and circuit calculations for component design

Crawl a website locally and compare technical findings between saved audits.

Chrome extension that shows the probability a tweet was written by AI.

Cash-back offers for eligible shopping

Buy ebooks with browser and downloadable reading routes

Molecular-biology quantities with visible formulas

Calculators for primers, reaction setup and molecular quantities

Check TLS protocols and ciphers from the command line

Validate route origins against RPKI data

Inspect a sample message for deliverability problems

Check PDF accessibility and inspect reading structure

Compare PDF pages visually and export highlighted differences

Count text and set writing goals

AI writing and study tools for humanizing text, checking AI detection, and building study material.

Turns API definitions and collections into mocks, then runs contract-conformance and non-regression tests.

UK account payments with plan limits and visible provider details

Hebrew verb forms and word lookup.

AI study platform for homework help, notes, flashcards, quizzes and exam prep.

Check audio and video clips for AI-generated voices and get a citable verdict.

Send ICMP probes to many hosts from one program

Count words and inspect text statistics

Explore word usage in text corpora

A language-course library with personal and institutional access routes.

Coding exercises for data and machine-learning study