I am currently working on a vCard parser. For the testing of the different edge cases of vCards (the standard allows a high variance) I need a collection of vCards from different sources. At the moment I am working with some vCards I created on my own and was wondering if there is a free collection of vCards (*.vcf) in the web which I can use for testing purposes.
Here is a LGPL vcard test suite for testing vCard parsers:
https://gitlab.com/pwithnall/vcard-test-suite/-/tree/master
It cover valid and invalid card and looks extensive.