TERRA ($LUNA) PoS ecosystem was launched in 2019 (Genesis Block : April 24th, 2019)
Gas Token : $LUNA, $UST (Stablecoin) from US$0.01 to US$1.30 depends on the transaction
Wallets* : Terra Station (Chrome extension and Smartphone), Keplr, Ledger
Bridge : TerraBridge, Wormhole, ( withdraw on Terra ecosystem with Binance ), ...
Blockchain explorer : Extraterrestrial
Swap : Terraswap, Coinhall, ...
Lending : Anchor, ...
Launchpad : Pylon, ...
Yield Optimiser : Loop, Apollo, ...
Liquid staking : Lido ($bLUNA)
Airdrop alert (*for stakers who delegate token) : Terra Analytics , TerraDrops , (January is a charging period for $LUNA in Crypto.com Supercharger)
More information and protocols about TERRA ecosystem : Terra Docs
NB: This is non-exhaustive overview of the ecosystem and subject to change, it's my point of view and not investment advise.
Other ecosystem : Elrond ($EGLD), BNB Chain (ex-BSC) ($BNB), Cosmos ($ATOM), Cardano ($ADA), Optimism, Arbitrum
Referral bonus (earn 10€, when start with 100 €) : Another way to stake in one centralized platform for beginners is to manage your token with Feel-Mining