Virtual whiteboard for sketching hand-drawn like diagrams

Interactive roadmaps, guides and other educational content to help developers grow in their careers.

draw.io is a JavaScript, client-side editor for general diagramming.

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Spring Framework

光 HikariCP・A solid, high-performance, JDBC connection pool at last.

CockroachDB — the cloud native, distributed SQL database designed for high availability, effortless scale, and control over data placement.