mStable unifies stablecoins, lending and swapping into one standard. mStable assets are liquidity shares that also function as stablecoins in their own right.
Dogecoin (DOGE) was founded in the US in 2013 as a joke but quickly gained a large following. It became a popular cryptocurrency (DOGE) used for tipping the content creators (mainly on Reddit and Telegram). As the creators had no serious plans for their currency they didn't elaborate a roadmap and were not working on the improvement of their project too much. The founder of Dogecoin Jackson Palmer left the project in 2015.
Terra aims to build new financial infrastructure that works better for everyone. The network is powered by a family of stablecoins, each pegged to major fiat currencies all algorithmically stabilized by Terra’s native token, Luna. Terra’s mission is to set money free by building open financial infrastructure.