ASCII Catalog (ASCIIcat) is an excellent collection of character charts, conversion tables, and reference guides designed for HTML writers, programmers, writers, and graphics designers.

ASCII Catalog is a Windows Help file that includes a variety of charts and tables, including: decimal, hex, binary, octal, ANSI, and Web color charts; ANSI and DOS characters; and Symbol and Wingdings fonts.

A hex binary table is included, along with conversion tables for volume, length, and weight and inch, millimeter, point, pica, and screen resolutions.

There are a variety of guides, including ones for paper sizes, Roman numerals, the parts of a font, font point sizes and pixels, International code pages, DOS line drawing characters, keyboard charts (for Windows, DOS and HP Palmtops), a writer's style guide, a list of commonly misspelled and misused words, U.S. state information, and much more.