1. imap
    imap is a client library for Allegro CL for sending and receiving email with support for POP, IMAP and SMTP
  2. IMCL
    ECL + IMGUI = IMCL
  3. IMHO
    IMHO is dead, as far as anyone knows
  4. IMPS
    IMPS is an Interactive Mathematical Proof System developed by W
  5. Inaimathi
    Inaimathi is a serif typeface bundled with OS X
  6. incf-cl
    (INCF CL) is a collection of utilities
  7. incless
    A portable, extensible Common Lisp printer
  8. incognito-keywords
    incognito-keywords introduces a new kind of keyword that looks just like any non-keyword symbol and allows safe usage of convenient but clashy symbol names by multiple libraries without conflicts through sharing
  9. Incongruent Methods
    A library that provides methods with incongruent lambda lists
  10. Incudine
    Incudine is a music/DSP programming environment for Common Lisp