Avira System Speedup Features:
Disk Analyzer. Analyzes hard disk usage and optimizes its use.
Disk Doctor. Diagnoses malfunctioning hard drives.
Recovery. Enables you to recover or back up files, registers, and master boot records.
Network. Gives you a status overview and fixes Internet loss associated with certain types of software.
Startup Manager. Improves boot up time by minimizing processes.
Registry Cleaner. Detects and cleans registry errors.
Junk File Cleaner. Locates and removes obsolete, duplicate, and empty files.
Smart Defragmenter. Finds and converts minute, empty space it into useful memory.
File Encryption. Makes your saved files unreadable to outsiders.
File Shredder. Deletes files beyond recovery.
Privacy Cleaner. Automatically erases daily browsing history and data (supports exclusion list and multiple profiles)
Disk Wiper. Guarantees that hackers cannot retrieve deleted files.
Battery Booster. Optimizes battery use, so the battery will not be drained from unnecessary processes.
Uninstaller. Quickly, easily, and permanently uninstalls programs, leaving no trace.
Process Manager. Gives you an overview of all active processes and how to stop them.
Simple Controls. Your user interface (UI) provides an overview of your gains in performance.

Home Page - https://www.avira.com/en/avira-system-speedup-free