THETA (THETA) coin is the cryptocurrency of the streaming network powering the decentralized video delivery. THETA is listed on multiple Asian exchanges and can be purchased for the South Korean won. THETA can boast solid investors, including Samsung. Being originally an ERC20 token, THETA swapped to its own mainnet in March, 2019.
Stellar is an open-source cryptocurrency network launched by non-profit Stellar Development Foundation. The currency itself is called Lumen (XLM). Some experts note that this asset has similarities with Ripple because of its quick and cheap transactions.
The Stellar network is guarded by the special contract that doesn't temporarily allow holders of big amounts of Lumen to sell it. Stellar works as an exchange platform where Lumen is used to pay a small exchange fee. The project has a high level of decentralization and provides equality for all of its participants. It has one of the biggest market capitalizations.
SophiaTX (SPHTX) is the cryptocurrency developed by the eponymous platform and marketplace established in 2017. Originally being an ERC20 token, SPHTX underwent a swap to its own mainnet released in mid-2018.