Hashflag Browser is an easy to use tool to browser all current Twitter hashflags. You can sort the hashflags by recently added or ending soon.
Data is directly fetched from Twitter.
Hashflags images that appear after a #hashtag on Twitter, and are enabled on Twitter for specific occasions or events. These are now more commonly referred to as custom Twitter Emojis.
Hashflags are supported on the Twitter Website as well as mobile apps on iPhone and Android. First party apps such as TweedDeck and Twitter for Mac currently do not support Hashflags. Third party clients may optionally choose to implement it.