The Chameleon Mini is also a great complementary device for easy emulation of HF tags. In the HF space, the proxmark performs well - the HydraNFC is a very powerful device alternative, allowing real time sniffing - but is more hands on than the proxmark. It was also used in the recent cloning of Tesla fobs and VingCard hotel badges.

In the LF space (125-134KHz, mainly HID / EM4XX and T55 chipsets) the proxmark is a very useful device.

For those interested in this space, there are a few alternatives as well.