| ColorClock 1.0 (details) | Prime ENG 5KB/4KB |
 Transforms the current time into RGB form and displays the color as the background. You can treat it like a screensaver. Inspired by the ColourClock by Jack Hughes. The original design belongs to lookatjack.com. | |
| By Lang Zhou. | 2019/02/11 |
Makes your screen flash. Has several minor bugs but they won't affect the programs; the next version will fix these and improve the UI.
Given latitude and longitudes, calculates the distance between any two points on the Earth, approximating the planet as a sphere. Includes data for 40 major world cities.