Rain Cleaner Pro Portable finds what is filling your drive, keeps your drivers current, and frees up resources while you play. Before anything is deleted, it shows you what it found and why it can go.
You decide when and what.
For each tool below: what it does, what you get from it, and what you can actually do with it.
Cleaning
Finds the files that take up space for no good reason: caches, update leftovers, old crash reports. For every item you see what it is, where it came from and what changes if you delete it. Nothing is removed on its own.
Drivers
Checks your drivers through Microsoft's catalogue — those have been through certification and it is the safest source. Sometimes the manufacturer releases a newer version first; then Rain Cleaner tells you and points you at their page. No “driver packs” from places nobody has heard of.
Game booster
Frees memory and lowers the priority of background programs while you play. The changes are temporary: stop the booster and everything goes back as it was. It does not promise a certain number of frames — that depends on the machine.
Emergency drivers
A familiar situation: you reinstall Windows and the network driver is missing — and you cannot download it, because there is no internet. Rain Cleaner carries basic Wi-Fi and network drivers and can install them offline, from a USB stick if needed.
Ransomware protection
A few decoy files are placed in your folders. You never touch them, but a program encrypting the folder runs into them early, because it works through the files in order. If it starts changing them, Rain Cleaner sees it: it takes a disk snapshot and stops the program that is writing. This is not an antivirus and does not replace one.
Internet
DNS is how Windows finds the right server when you open a site. If your DNS is slow, every first visit is slow. Rain Cleaner sends a few real queries to several DNS services and shows you which answers fastest, in milliseconds. The speed of the connection itself does not change.
Action history
Everything Rain Cleaner changes is written down: what it was before, what it became, and whether it can be undone. You can export the history as a page or as JSON to send to someone who helps you — user names, the computer name, serial numbers and addresses are left out.
Release Notes:
- Clean page: after a clean, the line under the results could run under the Scan again button in a narrow window. The text now wraps next to the buttons and never overlaps them.
- The main window now opens where and as big as you left it (also maximized). If that monitor is no longer there, it opens centered as before. Thanks to the user who suggested it.
- New Performance Lab: processor, memory, graphics, Windows drive and screen in one overview. A value Windows does not report is shown as "Not reported", never guessed.
- Disk health: what each drive reports about itself, a read-only file-system scan and "Optimise with Windows" (TRIM for SSDs, defragmentation only for hard disks). Repairs use Windows' own tools, only after you confirm, and go into the history.
- Games: the games installed through Steam and Epic Games, their size and the drive they are on.
- Pro: the workload advisor names the part most likely to hold the PC back for gaming, streaming, video editing, design, CAD or office work, with the reasons — no bottleneck percentages, no FPS promises. The upgrade advisor gives memory and storage specifications only when Windows can prove they fit; processors and graphics cards are never recommended.
- A drive that reports trouble now lowers the PC health score. 192 automated tests.