Twtapps on a roll with new Twitter apps

Earlier in January, we mentioned twtapps, a Montreal-based start-up developing simple, useful Twitter aplications. Twtapps most recently ntroduced twtpets, a game for pet owners, and twtwlst, a gift registry. The company has just come out with a new app – twttrip is the newest member of their Twitter app family, and developer Felipe Coimbra calls it his “favorite of the twtapps.”
Twttrip allows Twitterers to share travel plans with friends and followers, meet other people whose trips coincide, and display the tweets posted during a trip.

Does anyone have a favourite Twitter app they just can’t live without? Let us know.