If you're a Windows user looking to reclaim disk space, choose WinDirStat. Its treemap visualization allows you to quickly identify large files, and being completely free and open source makes it a great option for those who value transparency in software. However, keep in mind the dated interface and slower scans on large drives.
On the other hand, if you're interested in managing your photo and video collection with a focus on privacy, go for immich. This tool offers high performance and complete control because it's self-hosted, which is ideal for tech-savvy users. However, be prepared for the self-hosting setup and limited integrations compared to cloud services. If you prefer straightforward setups and extensive third-party connections, you should avoid immich.