Tessellate your favorite 3D surfaces (technically, 2D manifolds) with triangles, hexagons, or a number of other curated tiling types!

Bot Land is an online strategy game with a focus on automation. Make bots, write scripts for them, and send them into battle! Playable for free.

Kroki provides a unified API with support for BlockDiag (BlockDiag, SeqDiag, ActDiag, NwDiag), C4 (with PlantUML), Ditaa, Erd, GraphViz, Mermaid, Nomnoml, PlantUML, SvgBob and UMLet... and more to come!

pngquant is a command-line utility and a library for lossy compression of PNG images.

The conversion reduces file sizes significantly (often as much as 70%) and preserves full alpha transparency. Generated images are compatible with all web browsers and operating systems.

Pngquant is a free, open source and cross-platform command-line lossy PNG compressor. It is based on a portable libimagequant library and is written in C99. It reduces the file size significantly by converting the PNG image to more efficient 8-bit PNG format and preserves full alpha transparency. As you may already know, 8-bit PNG files are often 60-80% smaller than 24/32-bit PNG files. The images compressed using Pngquant are fully-compatible with all web browsers and operating systems. Pngquant can compress one or multiple images at once.

A simulated Enigma machine, where the different parts of the machine are beautifully represented with graphics.

The notebook simulates an Enigma Machine and visualizes how it works. The Enigma Machine is an especially neat thing to visualize because it was electromechanical. As you used it, it moved. Instead of circuit traces, it had beautiful real wires connecting its pieces.

Image source: Wikipedia.

A command-line tool to generate, analyze, convert and manipulate colors.

ASCIIQuarium is a short Perl script that lets you embrace aquatic nature from your terminal. It's an aquarium/sea animation in ASCII art.

Generate HQ poly wallpapers.

Example with fixed color/gradient:

WallGen is a small command-line utility that generates HQ poly wallpapers with only a few text arguments for inputs. Free and open source software.

A program that tries to improve FIGlet; can load FIGlet fonts; supports Unicode input and output, colour fonts and output, and various output formats, including HTML, IRC and ANSI; uses libcaca to produce nice textual effects.

Not exactly a font manager, but a nice program for making large letters out of ordinary text; an astonishing number of different fonts is available.

A Unix terminal recorder written in Python that renders your command line sessions as standalone SVG animations.

The images allow to easily, visually take in what a sorting algorithm did over time, as it took the list from an unsorted, random state to a completely sorted state. On the horizontal axis, we have a list of numbers, represented as a single line of colors. On the vertical axis, there is time. From the top of the image to the bottom of the image, there is the list of numbers (the line of colored pixels) from a random ordering to a “sorted” rainbow line, by applying each kind of sorting algorithm one step per row.

A curated list of websites with beautiful free icon design sets that can be used for personal and commercial projects.

Under 1KB each! Super Tiny Icons are miniscule SVG versions of your favourite website and app logos