The "scene" for these collections is largely hosted on Russian-language forums and torrent trackers. Some of the most well-known names include:

WPI collections (Windows Post-Install) are automated software installers that allow you to set up multiple programs at once after a fresh Windows installation. While popular on torrent trackers, they carry significant security risks if downloaded from unverified sources.

For a safer, cleaner experience, Ninite is widely recommended. It allows you to select apps from a clean list and generates a small installer that downloads and installs the latest, official versions of programs directly from the developers, free of toolbars or malware. Component | Software Installation - The WPI Hub

While not a full WPI, these collections focus strictly on essential system components like .NET Framework, DirectX, and Visual C++ Redistributables. Where to Download (Safely)