Fondu - Open source free ICO smart-contract builder
Blockchain Demo - Visual demonstration of blockchain technology
thirdweb - thirdweb is an ecosystem of SDKs, dev tools, and dashboards that help teams build and manage web3 apps. Deploy custom or pre-built contracts to ETH, MATIC, AVAX, & more.
Crypti - A minimal cross-platform Bitcoin price widget
PAID Network - PAID network's SMART agreements will transform business
Explain Me Please - Complex topics explained for your level and background