Apps
Some useful apps for science, programming and entertainment.

DOI to BibTeX converter
Resolve Document Object Identifiers (DOIs) to BibTeX objects.
DOI Generator
A service to generate opaque (random), human-readable and URL-safe Digital Object Identifiers (DOIs).

QR Code Generator
Generate QR Codes from URLs

Word Wheel solver
A solver for "word wheels": word puzzles in which the goal is to make as many words as possible from a set of nine letters, where one of the letters must be used in each word.

A Spelling Bee Solver
A solver for the New York Times daily Spelling Bee puzzle