Comment by FabHK
15 hours ago
> Apple software. It's buggy, uses proprietary formats that you can't export
Buggy sure, but proprietary formats? Calendar entries can be imported or exported as iCalendar .ics (RFC 5545), contacts as vCard .vcf (RFC 6350), photos as .jpeg or .heif (ISO/IEC 23008-12), books use the open .epub (ISO/IEC TS 30135), iTunes dropped DRM for purchased files in 2016 and uses mp4 (ISO/IEC 14496-14:2020) (though not sure what Apple Music streaming uses). TextEdit uses .rtf (a closed Microsoft format), and Pages, Numbers, Keynote use their own formats (as other office software does), but they import and export to many common formats. Notes imports and exports markdown (and you can always print/export as pdf).
What are the "proprietary formats that you can't export"?
ETA: Oh, Messages, yeah. To export those, you have to copy/paste a conversation, or use a 3rd party app, fair enough.
iMessage lives as a sqlite db at ~/Library/Messages/chat.db , I wouldn't call a sqlite db proprietary per say.