Informatimago Public Common Lisp Libraries



The sublibrary systems provided by this library should contain only pure conformant Common Lisp packages.

They should compile and run in all Common Lisp compliant implementations, and should have make use of no external package (eg. compatibility library) and no other (implementation dependant) package than COMMON-LISP. They should not use #+/#- to activate or disable implementation specific code. [There remains some packages using #+/#- with implementations specific variants, we're working on removing these forms].


Common Lisp Extensions.

This directory contains Common-Lisp packages that are mostly portable, but that use some extensions, packages out of the Common-Lisp specifications, like GRAY or other portability libraries.


Miscellaneous Common Lisp packages.


clisp specific packages.


POSIX API (clisp specific for now).


Various tools to help developing and compiling these packages. (Mostly obsolete since the introduction of ASDF and Quicklisp).


Simple Recursive-Descent Parser.


Objective-CL reader macros.


Various small lisp programs and proof-of-concept demos. Those are not gathered with ASDF system definitions.


These libraries can be obtained from the git repository at

git clone informatimago

They're also available thru quicklisp:

(ql:quickload :com.informatimago.common-lisp)
(ql:quickload :com.informatimago.clext)
(ql:quickload :com.informatimago.clmisc)
#+clisp (ql:quickload :com.informatimago.clisp)
#+clisp (ql:quickload :com.informatimago.susv3)
(ql:quickload :com.informatimago.rdp)
(ql:quickload :com.informatimago.objcl)


You may browse the documentation, or you may also browse the sources at gitlab.

Bug Reports & Patches

Bug reports may be posted on gitlab issues:, and merge requests for patches: Alternatively, they may be sent to

Authors & License

All this code is authored by Pascal J. Bourguignon, apart from:

All this code is released under the GNU AFFERO GENERAL PUBLIC LICENSE apart from:


Other Common-Lisp Small Programs and Tidbits

Some other small programs and tidbits.

Solutions to the L-99: Ninety-Nine Lisp Problems

Have a look at my solutions to the L-99: Ninety-Nine Lisp Problems, but first try to do them yourself!

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