Middlewares

Here's a list of notable nREPL middleware you might encounter in the wild.

!!! Warning

Some of them might not have been updated to work with `nrepl/nrepl` yet.

Clojure Editor Support

• cider-nrepl: A collection of nREPL middleware designed to enhance CIDER (and Clojure editors in general).
• refactor-nrepl: A collection of functionality designed to support editor refactoring features.
• sayid: A powerful tracing/debugging tool. It is a great alternative of CIDER-nREPL's basic tracing functionality.

ClojureScript support to nREPL session

• Piggieback

The following ClojureScript REPLs are leveraging piggieback internally to provide nREPL support.

• Weasel
• figwheel
• shadow-cljs (it actually only stubs the piggieback API, leverages its own nREPL middleware internally for ClojureScript evaluation)

HTTP support

• drawbridge

Deprecated Middleware

This section lists middlewares that were somewhat prominent in the past, but were replaced by alternatives down the road.

• nrepl-middleware, part of ritz that provides a variety of nREPL middleware supporting various enhanced REPL operations (including apropos, javadoc lookup, code completion, and an alternative eval implementation). (superseded by cider-nrepl)
• Javert provides a basic object inspector. (superseded by cider-nrepl)
• nrepl-profile: profiling middleware, which was eventually integrated into cider-nrepl.

!!! Note

This list doesn't aim to be complete. You can find more 3rd-party middlewares listed
[here](https://github.com/nrepl/nREPL/wiki/Extensions).