BleachBit
/ privacyBleachBit is a powerful system cleaner that goes beyond simply freeing up disk space—it scrubs your digital existence clean. Famous for its effectiveness (and its mentions in high-profile political scandals), it obliterates cookies, cache, history, and temporary files that could betray your online activity. Unlike standard deletion, its file shredding feature overwrites data multiple times, ensuring that even advanced forensic tools cannot recover your deleted secrets.
Detailed and thorough, BleachBit supports cleaning for thousands of applications including Firefox, Chrome, VLC, and Adobe Flash. It offers advanced features like wiping free disk space to remove traces of previously deleted files and vacuuming databases to optimize performance. On Linux, it can even clear memory and swap space, ensuring no sensitive data remnants are left behind in system caches.