RabbitMQ - RabbitMQ is an open source message broker software.
Chainstack - Automates blockchain (Ethereum included) deployment at a much lower price point than Infura, and without native storage.
Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
QuikNode.io - Blockchain Infrastructure Cloud
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.
Chainnodes.org - Reliable and Affordable Web3 Infrastructure. Ethereum, Polygon, Optimism, Arbitrum, BSC, Base, Gnosis for Devs & aApps. No limits on archival requests + debug and trace APIs