Based on our record, FreeFileSync seems to be a lot more popular than checksum. While we know about 203 links to FreeFileSync, we've tracked only 3 mentions of checksum. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Alternatively, you could run https://corz.org/windows/software/checksum/ on your music collection, and use the hash file to check that your backups are the same as the source. Source: about 1 year ago
The next thing you want to look into is file integrity. Files can get corrupted & if you update your backup with a corrupted version of the file the backup isn't much help. If you're hoping to retain data for an extended period of time look into file hashing. I use https://corz.org/windows/software/checksum/ but there likely better options out there, I haven't looked recently. I like that the corz checksum... Source: about 2 years ago
For example https://corz.org/windows/software/checksum/. Source: over 2 years ago
FreeFileSync https://freefilesync.org/ I have been a happy user for years and have made a donation too. - Source: Hacker News / about 2 months ago
FreeFileSync messed up my pCloud database a couple times at first (causing disappearing files in the Crypto Folder, mirroring of the same files over and over again). Pcloud support provided an easy way to fix the database. To fix the root cause, one needs to exclude FreeFileSync's temporary files from the backup: pCloud Drive > Settings > Backup/Sync Exclusions, exclude sync.ffs_lock and *.ffs_tmp. Source: 5 months ago
As per Apprehensive_Arm_754 answer below, https://freefilesync.org is the solution to my particular problem, since it allows all kind of simple rules and logic to apply, so I can make sure that the copy only happens in one direction, and only ever by file date etc. Much appreciated. Source: 5 months ago
I use this one: https://freefilesync.org. Source: 5 months ago
It was me, I'd probably play around with setting up shared folders of preferences and plug-ins and whatnot on something like dropbox or Google Drive. There are various folder sinking tools on both platforms such as free file sync on Windows. Since they are two completely different platforms, I don't know how interchangeable some of the preferences or plugins would be. I haven't used a Mac in a 100 years. Source: 6 months ago
HashCheck Shell Extension - File-integrity verification with CRC-32, MD5, SHA-1, SHA-2 and SHA-3, integrated into Windows...
rsync - rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.
Md5Checker - Md5Checker is a free, faster, lightweight and easy-to-use tool to manage, calculate and verify MD5 checksum of multiple files/folders.
Syncthing - Syncthing replaces proprietary sync and cloud services with something open, trustworthy and...
QuickSFV - QuickSFV integrates into the Windows Explorer shell and makes it very easy to verify files.
GoodSync - GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.