SLT

Brings Common Lisp development into IntelliJ IDEA and other JetBrains IDEs, providing a familiar interface with code intelligence, debugging, and REPL workflows that leverage JetBrains shortcuts and tools.

Works with SBCL, ABCL, CCL, Allegro CL, and CMUCL, allowing flexibility in choosing a Common Lisp implementation, though the README notes that not all features are consistent across them.

Uses a modified SLIME/Swank protocol to enable interactive debugging with breakpoints and macro expansion, plus a built-in REPL with return inspection for real-time code evaluation.

Integrates Common Lisp HyperSpec for direct documentation access and provides features like automatic indentation and argument help (Ctrl+P), enhancing productivity within the IDE.