Opta - Opta is a new kind of Infrastructure-As-Code framework designed for fast moving startups.
Chain - The Block Chain API for Developers
DeSo - DeSo is a new layer-1 blockchain built from the ground up to scale decentralized social applications to one billion users.
MyCryptoAddress - Claim your Cryptocurrency address on the web
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.
DexTracker - All the Ethereum decentralized exchanges stats you will need