Wehner's ANIMATE DOS command is a 2344-byte program for the IBM which makes animated GIFs. http://wehner.org/tools/animate
Tool, instructions and disk label are at http://wehner.org/tools/animate.zip

Another quickly-made program (392 bytes), which creates descending factorials of up to 64800 decimals. Download and rename it factor.com. http://wehner.org/tools/factor.x
A reprint of a conversation on NEWSGROUPS gives use instructions. http://wehner.org/tools/factor.txt

The 3D section, with the entire Wheatstone lecture and images as well as the reply by Towne. http://wehner.org/3d.zip

ANNA will turn a left-eye and a right-eye image pair into a red-green anaglyph stereo composite. 762 bytes. Zipped with instructions 250,278. http://wehner.org/tools/anna

MoveR MOVES pixels to the RIGHT to help with stereo reconstruction . 1151 bytes. Zipped with instructions 376,832. http://wehner.org/tools/mover

LEN takes from two to six separate images and creates a striped composite. 2295 bytes. Zipped with instructions 276,274. http://wehner.org/tools/len

G1785 produces a long tone-scale gray image from a colour bitmap image. 1630 bytes. Zipped with instructions 1,998,616. http://wehner.org/tools/gray

HALVE and DOUBLE are DOS commands to help with file storage and anti-aliasing. Package 5.09 megabytes. Zipped with instructions 1,222.293. http://wehner.org/tools/halve

FreewareWorld (off site)