Difference between NFC Forum Tag 2 and Mifare Ultralight from developers perspective?

Question

I read someplace that Mifare ultralight was ALMOST the same as NFC Forum Tag 2, but not quite. So what is the difference between them?

Can I use the same libnfc commands to access them for example?

Answer 1

NFC Forum are specification. Mifare Ultralight is a product.

Mifare Ultralight is compatible with NFC Forum Type 2 Tag.

Here a usefull document to summarize: http://open-nfc.org/documents/PRE_NFC_0804-250%20NFC%20Standards.pdf