draw.io - Online diagramming application
Chainlink - Chainlink Marketing Platform provides advanced marketing automation, business intelligence, and attribution across all channels.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Polkadot - Polkadot is a Web3 decentralized cross-blockchain protocol that seeks to connect different blockchains, enabling them to share security, interoperate and transact with each other.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
Tellor - Tellor is a decentralized data provider that is built on Ethereum.