Apache Camel has always excelled at connecting systems, but observing what happens inside your running integrations has traditionally meant switching between CLI commands, log files, or firing up a web console. With Camel 4.21, we are introducing something new. Camel TUI is an interactive terminal dashboard that gives you a live view of your Camel integrations as they run on your local machine. Built on top of the Camel CLI, it renders real-time data with a modern terminal UI — mouse support, keyboard navigation, Unicode graphics, and even pixel-rendered route diagrams.

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When you have a handful of Camel routes, understanding the message flow is straightforward. But as your application grows to tens or hundreds of routes connected through direct, seda, Kafka topics, and external services, it becomes harder to see the big picture. Which route feeds into which? Where does a message end up after three hops? Which external systems are involved? Apache Camel 4.21 introduces route topology diagrams to answer exactly these questions.

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Apache Camel has shipped 272 production releases over 19 years without a single month of inactivity. The project averages a new release every 15 days, maintains up to 10 release lines in parallel, and has accumulated 100,000+ commits from over 1,500 contributors since 2007. This track record is not a recent development — it has been sustained continuously since well before the current wave of AI-driven open-source activity. This post presents the evidence.

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