HTML5 is a rival to dogecoin and could provide a fast platform to buy alt coins instead of using BTC.
he following Crypto's can be used to buy other crypto's which could be of use and may break the dominance of using Bitcoin to purchase Crypto's,
HTML5 - Being relaunched looks promising
BURST - Getting wider acceptance
DOGE - well established
These Crypto coins/tokens can be used at smaller exchanges like, coinexchange.io and coingather.com