So true! But I found a trick where you can get Jellyfin cheap if you buy it pretending to be a resident of another country. Here’s some prices:

• Vietnam - 0₫ (VND)
• India - ₹0 (INR)
• Indonesia - Rp0 (IDR)
• Philippines - ₱0 (PHP)
• Thailand - ฿0 (THB)
• Mexico - Mex$0 (MXN)
• Brazil - R$0 (BRL)
• South Africa - R0 (ZAR)
• Turkey - ₺0 (TRY)
• China - ¥0 (CNY)
• Malaysia - RM0 (MYR)
• Egypt - E£0 (EGP)
• Argentina - AR$0 (ARS)
• Japan - ¥0 (JPY)
• South Korea - ₩0 (KRW)
• Singapore - S$0 (SGD)
• Australia - A$0 (AUD)
• New Zealand - NZ$0 (NZD)
• Canada - C$0 (CAD)
• United Kingdom - £0 (GBP)
• European Union countries - €0 (EUR)
• United States - $0 (USD)

deleted by creator

Kopia might meet your needs.

https://kopia.io/

(Edit, because I’ve got more time :)

• Runs native on Windows and macOS. Doesn’t need Windows WSL or a wrapper
• Can run as client-server, or standalone, backing up to local, network, S3, WebDAV, various clouds, etc
• Open source
• Snapshots are incremental, encrypted, and deduplicated
• CLI and GUI

I’ve been happily using it for years for similar needs (mixed systems)

Syncthing has multiple file versioning strategies.

https://docs.syncthing.net/users/versioning.html

So it can provide quite solid protection beyond a trash can, but yes, it’s still primarily a syncing tool.