Zero-filling truly and irreversibly deletes all the data on the media. No software or hardware exist to recover what was overwritten by zeros. Some of the large SSDs are an exception to this rule, where small bits can sometimes be recovered, but still there is no software to recover data from them and hardware recoveries are extremely difficult.
Software Name: Lowvel
version: Build 61
Supported OS: Microsoft Windows XP, Vista, 7, 8, 8.1, 10 32-bit and 64-bit Operating System.
Size: 659 KB
Description: Lowvel overwrites data with zeroes, i.e. performs so called zero-filling of a storage device. It should be noted that after such zeroing, neither a data recovery software nor a data recovery service can recover data off the device.