1. NST
    NST is a test framework for Common Lisp offering separate and reusable fixture definitions, test groups, extensible test criteria, ASDF integration, and optional JUnit XML output
  2. Ntccrt
    Ntccrt is an interpreter for the Non-deterministic Timed Concurrent Constraint (ntcc) calculus capable of real-time interaction
  3. nuclblog
    Blog software for use with Hunchentoot
  4. Nuprl
    The Nuprl system, based on the type theory of Martin-Löf, is a system for manipulating proofs
  5. Nyxt
    Nyxt is a keyboard-oriented, extensible web-browser designed for power users
  6. oauth2
    Small library which allows to use OAuth2 protocol, original repository is here https://github.com/Neronus/oauth2
  7. objc
    objc Objective-C to Lisp Binding with Transparent Layer, 2025
  8. Object Representation
    hyperobject - Hyperobject is a Object Representation package for development
  9. object-class
    object-class ensures that special subclasses of standard-object cluster right in front of standard-object in the class precedence list
  10. Objective-CL
    Objective-CL is a Common-Lisp/Objective-C bridge currently supporting a range of Lisp implementations on Mac OS X and GNUstep