common-lisp.net
Current work
What the volunteers who run common-lisp.net are building and keeping up.
Fresh container images of the Lisp implementations
common-lisp.net builds and publishes container images of the Common Lisp implementations, under clfoundation on Docker Hub. They are what the site's own CI runs on, and they are for anyone who wants a known-good Lisp in a container: to try an implementation, to test a library on all of them, or as the base of an application image.
In September 2026 every one of them was rebuilt on the current release of its implementation and on current Debian.
| Implementation | Image | Versions and architectures | Last built | Pulls |
|---|---|---|---|---|
SBCL Steel Bank Common Lisp | clfoundation/sbcl | 2.6.9 amd64 arm64 2.6.10-rc amd64 arm64 | 2026-09-29 | 315,679 |
Clozure CL Clozure Common Lisp | clfoundation/ccl | 1.13 amd64 1.13.1-rc amd64 arm64 | 2026-10-01 | 18,445 |
ECL Embeddable Common Lisp | clfoundation/ecl | 26.5.5 amd64 | 2026-10-04 | 49,850 |
ABCL Armed Bear Common Lisp, on the JVM | clfoundation/abcl | 1.9.3 amd64 | 2026-09-29 | 41,792 |
Clasp Common Lisp on LLVM, interoperating with C++ | clfoundation/clasp | 3.0.1 amd64 | 2026-09-29 | 2,838 |
CLISP GNU CLISP | clfoundation/clisp | 2.49.92 amd64 | 2026-09-28 | 4,210 |
CMUCL CMU Common Lisp | clfoundation/cmucl | 21f amd64 | 2026-09-28 | 3,015 |
Allegro CL Express Franz Inc.'s free Express edition | clfoundation/allegro | 11.0express amd64 | 2026-09-28 | 1,057 |
Read from Docker Hub by this site, every half hour.
Clozure CL on arm64, for the first time
CCL's port to 64-bit ARM Linux was merged into its development branch
on 2 September 2026 and has no release yet. The 1.13.1-rc images are
built from that branch, for both amd64 and arm64, so that anyone
with an ARM machine can try it today. It is experimental: please report
what breaks to the CCL project.
docker run --rm -it clfoundation/ccl:1.13.1-rc-trixieBuilt natively, on both architectures
The SBCL images, and CCL's release candidates, are built on real
amd64 and arm64 machines, not under emulation, and published as
multi-architecture tags: the same tag runs on a laptop with an ARM
processor and on an x86 server. The images come on Debian (full and
slim), some on Alpine as well, and the full ones carry a script that
installs Quicklisp.
docker run --rm -it clfoundation/sbclThe sources of the images are in the cl-docker-images group on gitlab.common-lisp.net, one repository per implementation; that is also where to report a problem with an image. To use them in your own project's CI, see Using GitLab CI to test CL projects.
The standing work
Running common-lisp.net. A GitLab instance kept on current
releases, with CI runners; the mailing lists; the project sites at
common-lisp.dev; and the backups behind all of it. In 2025 everything
moved to a new server. A proof-of-work gate now stands in front of
GitLab and the list archives, so that the swarms of crawlers that were
taking the services down no longer can.
Hosting Lisp projects. Free hosting for open source Common Lisp projects, as since 2003: several hundred public repositories, among them ASDF, Alexandria, CMUCL and Iterate.
Paying for what it runs. common-lisp.net means to pay for its servers through the services it runs on them: custom images, whose agent and builds draw on a community pot that anyone can top up. A gift to the general fund is welcome too. The appreciation fundraisers once run for projects such as ASDF and ABCL are paused.
Keeping the commons. Stewardship of the community's domain names,
common-lisp.net and cliki.net among them, and hosting for
CLiki, the Common Lisp wiki.
This site. The pages you are reading are a Common Lisp program: one page tree in one Lisp image, its source open to merge requests like any other project here.
Who does it. Volunteers, every one of them unpaid. Who they are, and the non-profit that holds the site, are on About.
How you can help · Services · News
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