Dead Internet Theory: Freeware and shareware once stayed downloadable because copies sat on several servers at once. When a mirror dies or silently alters the files it hosts, the "backup copy" becomes part of the problem instead of the cure.
ZMatrix is a surviving SourceForge-era Windows desktop enhancement that recreated Matrix-style streaming characters using live text, blending modes, screensaver support, multi-monitor handling, Winamp integration, and openly released source code.
David Manthey's Orbital Viewer freeware rendered atomic and molecular orbitals with point plots, polygon surfaces, ray tracing, stereo views, cutaways, animation, and VRML output on Windows systems from the 1990s and early 2000s.
The Kalpen Stunts site preserves downloads, tools, tracks, and fan knowledge around Stunts/4D Sports Driving, the 1990 DOS racer whose track editor helped create a community that refused to disappear.
A surviving K-Zero game page points back to the era of Klik & Play, Click & Create, and tiny Windows executables passed around directly from personal websites.
F2.org mixed freeware, humor, coding, Australia links, odd documents, and an explicit archive of defunct pages into one sprawling personal reference site.