Altcoins are "alternative" cryptocurrencies, so called because they are an alternative to the original and biggest crytocurrency Bitcoin.
Disclaimer - Listing of any Altcoin here does not imply endorsement. Altcoins can be extremely volatile, do your own thorough research before making any investment.
Duck DAO
A decentralised incubator for early-stage crypto projects.
Chainlink
A decentralized oracle network to connect smart contracts on any blockchain to off-chain data sources.
Stellar Lumens
Founded by Jed McCaleb, formerly CTO of Ripple,
and founder of Mt Gox before selling it.
TrustSwap
Targetting tranched and timed payments, escrow, and provides a token launch platform. Coin is SWAP.
Founded by Jeff Kirdeikis.