推荐一个软件 Glary Utilities

Glary Utilities 100% freeware

Glary Utilities是世界排名第一的自由,强大和全合一事业,在世界市场，它提供了许多强大而易用的系统工具和实用程序来修复,加速,维护你的电脑.

功能：

Category	Modules
Clean Up & Repair	Disk Cleaner Removes junk data from your disks and recovers disk space Registry Cleaner Scans and cleans up your registry to improve your system's performance. Shortcuts Fixer Corrects the errors in your startmenu & desktop shortcuts Uninstall Manager Uninstalls programs completely that you don't need any more
Optimize & Improve	Startup Manager Manages programs which run automatically on startup Memory Optimizer Monitors and optimizes free memory in the background Context Menu Manager Manages the context-menu entries for files, folders...
Privacy & Security	Tracks Eraser Erases all the traces,evidences,cookies,internet history and more File Shredder Erases files permanently so that no one can recover them Internet Explorer Assistant Manages Internet Explorer Add-ons and restores hijacked settings File Encrypter and Decrypter Protects your files from unauthorized access and use.
Files & Folders	Disk Analysis Shows you the disk space usage of your files and folders Duplicate Files Finder Searches for space-wasting and error producing duplicate files Empty Folders Finder Finds and removes empty folders in your windows File Splitter and Joiner Splits large files into smaller manageable files, and then rejoin them.
System Tools	Process Manager Monitors programs that run on your PC and stop spyware and Trojans. Windows Standard Tools Provides direct access to the useful windows default functions.

Scene Shots: