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Stop vibe-debugging.
Plug Claude into your app's actual errors.
AppSignal's MCP server hands Claude, Cursor, or Zed your real errors, traces, and the deploy that shipped them. AI writes the fix; you review the diff.
DrJava is a lightweight programming environment for Java designed to foster test-driven software development. It includes an intelligent program editor, an interactions pane for evaluating program text, a source level debugger, and a unit testing tool.
Compile and run Java programs without using command mode!
Dude is a small simple development environment written in Java which allows you to compile and run Java programs without using the command window. It is platform independent and open source. Dude is easy to set up and uses the same directory structure for source and object files.