SmartMesh (SMT) ERC-20 token is used as a means of payment within the SmartMesh ecosystem, as well as the reward coin to node contributors and users. It is listed on a few exchanges and trading against BTC, ETH and USDT.
Scry.info (DDD) is an Ethereum-based token of the Scry.info global data aggregator. DDD token is listed on a few exchanges paired against bitcoin and Ethereum. In this abbreviation, “DDD” stands for "distributed data depositary".
EOSDT is a first decentralized USD-pegged stable coin launched as part of the Equilibrium network. A 1:1 parity with USD is protected. This coin is represented on number of exchange platforms, including decentralized exchanges and HITBTC, Bequant, Bancor, etc. It’s also supported by many wallets. You can buy EOSDT for USD with bank card, using the MoonPay service.