As of 21 December, the following websites have been upgraded to Drupal 9:
- abt
- abt-piquet
- acad-qr
- acceleratorsls
- actiwiz-dev
- admin-eguide
- aida-innova
- aidainnova
- aion-project
- alice-analysis
- alice-o2-project
- alien
- alien-d8
- alumni
- apprentissage-technique
- archive-europeanstrategy
- arcpic
- aries
- aries8
- astro
- astroclub
- atlas-caf-tutorial
- atomiade
- ats
- augment
- aurevoir
- autodesk-task-force
- be-dep-abp
- be-dep-asr
- be-dep-bi
- be-dep-bi-ml
- be-dep-cem
- be-dep-co
- be-dep-css
- be-dep-ea
- be-dep-gm
- be-dep-ics
- be-dep-op-leir
- be-dep-op-lhc
- be-dep-op-ps
- be-dep-op-psb
- be-dep-op-sps
- be-dep-rf
- be-ics-group-surveys
- be-op-ps
- be-safety
- be-selection-committees
- bigbangstage
- blmtwg-run3
- blond
- bls-atlas-collaboration
- bujinkan
- caec
- canoe-kayak
- cathi-project
- cc60facility
- cda-surveys
- cenf-dev
- cenf-ehn1-np
- cerf
- cern-eu
- cerneu
- cern-flyfishing
- cern-gracq
- cernguides-test-db
- cern-ohl
- cern-peti
- cern-rides
- cern-rugby-club
- charm
- clear2
- cloud
- cloud-licence-office
- club-musiclub
- club-welcome
- cmg
- cms-against-covid19
- cmscreate-updatedd8
- cms-daq-dth-p1
- cms-daq-dth-p2
- cms-do-anonymous-msg
- cmsengoffice
- cms-e-voting
- cmsjetmetquestionnaire
- cmssafety
- cmssafety-drupal8
- cmsstatcommmigration
- cms-support-tdoan
- cms-tbps-db
- cms-tfdi-anonymous-msg
- codex-b
- cofund-questionnaire
- cofund-questionnaire-cern
- committees
- config-man
- connectdots
- coolingandventilation
- copyright
- council-votes
- cps-coordination
- crg
- crg-ml-d8
- crome
- cryo4lhc
- cryo4lhc-dp8
- cryogenics
- crystalclearcollaboration
- csaio
- ctmc
- cyberbeam
- cyclingatcern
- cylindricalonion
- d8-ecfa
- database-is
- db-3593-updatedd8
- design-guidelines
- dev-theme
- dg-unit
- digital-memory-project
- diversity-and-inclusion
- dmc-new
- dosimetry
- dphep
- dphep-d8
- drupal-showcase
- drupal-tools
- dsoc
- ea-ea-le
- eam-opensource
- easitrain-brochure
- easitrainers
- easy-start
- ecard
- ecfa
- eco-actions
- e-ms
- en-cv-cern
- en-cv-lhc
- en-dpo
- en-ea
- enlight
- enlight2
- en-mme-mm
- en-safety
- en-template
- ep-ags-our-reference-guide
- ep-data-protection
- ep-dep-ags
- ep-dep-dt
- ep-dep-dt-eo-dev
- ep-dep-sft
- ep-ese
- ep-rnd
- erditmigrate
- erm-risk-management
- esas-alias
- esplanade
- esps-study
- eucapt-census
- europeanstrategyupdate
- eutelescopedev
- event-atlas-week
- event-romanian-firms-visit
- exit-questionnaire-doct
- exitquestionnaireforfellows
- exit-questionnaire-ftec
- exit-questionnaire-stag
- exit-questionnaire-tech-admin
- f3me
- faser
- fcc-designreport
- fccis
- fcc-ped
- fhr
- financeclub
- fls
- fluidicdata
- fmcm
- fmcm-d8
- foss4i-updatedd8
- foundationglobe
- fpcp-conferences
- fspsps
- fundraiserforlebanon
- games-club
- gandalf-framework
- gdd
- genhet
- german-dac
- gracq-cern
- gtpa
- healthinsuranceschemechis
- hepix-ipv6
- hep-project-gfs
- hep-service-cerf
- hflav
- hgc-db-updatedd8
- hiradmat
- hiringmanagersurvey
- hl-lhc-computing
- home
- hpc4l-db-updatedd8
- hssip
- hts
- iaxo
- icec-new
- iefc-drupal
- iml
- info-portugal
- information-technology
- inparticulartmp
- intelum
- intelum-new
- internal-audit-drupal8
- internal-audit-service
- internship-portal
- ipv6
- ir-dpo-office
- isballot
- isolde-d8
- isolde-solenoidal-spectrometer
- isotdaq-schools
- it-archives
- itp
- itserversdonations
- it-student-projects
- knowing-it-users-better
- knowing-it-users-better-upgrade
- lcgdm
- ldg-expert-group-webpage
- lhcathome
- lhcathome-archive-upgrade
- lhcb-computing-shifters
- lhcb-early-career-scientist-awards
- lhcb-ecgd-survey
- lhcb-ecs
- lhcbpnpimuon
- lhcb-survey
- lhc-coordination
- lhc-mentoring
- lhcone
- lhcreate2017-updatedd8
- lhcreate2018-updatedd8
- lhcreate-updatedd8
- lhec-drupal8
- linac14
- lisa-itn
- livinglab
- lmc-public
- lpcc
- ls2-committee-mgt
- mario-drupal8-0x
- mathusla-experiment
- mcwg
- medipix
- mice-procurement
- microclub
- milliqan-db-updatedd8
- miniball
- moedal
- moedal2020
- molflow
- molflow-drupal8
- mooc
- mpe-cb
- my-first-easystart
- na64
- na65
- neutrino-secretariat
- new-alpha
- newcomersguide
- new-incidents
- newsletter
- new-timeline-4
- nimms
- ntof-test
- official-home
- ombuds
- opense
- opense-d8
- operational-intelligence
- passeport-big-bang
- pbc
- pbc-backup
- pensionfund
- per
- per-questionnaires
- photoclub
- photoemission
- photowalk
- physicsschool
- pic
- playprotons
- ppc
- privacy
- project-360
- project-hl-lhc-industry
- project-itp-dr
- project-stream
- project-training-avignes
- project-training-lthomasb
- project-training-mrojewsk-drupal8
- project-training-pmarinho
- project-training-vwedlake
- project-training-zgarai
- qartlab
- quaco
- quantumacy
- quantumfuture
- quantumfutures
- questionnaire-ftec
- r2e
- radsaga
- radwg
- rcs
- rd51-public
- recuperation-sales
- rilis-web
- rtf-sg-info
- safetyofficete
- sce-dep
- school-digilibrary
- scoollab
- scrivens-drupal
- service-ats-desktop-support
- service-hotel
- sgm
- sg-navigation-content
- shine
- shine8
- shine8demo
- shine8easy
- sidis
- sigmon
- snd-lhc
- solvay-education-programme
- spain
- spain-at-cern-migration
- sparks-2021
- specxray
- sps-coordination
- ssp-isolde
- ssp-isolde-cern
- summerstudent
- summerstudents2019
- support-drupal8
- survey-poll
- surveys
- swan2
- sxa5-db-updatedd8
- sxa5-updatedd8
- sy-data-protection
- sy-dep
- sy-dep-abt
- sy-dep-ar
- sy-dep-bi
- sy-dep-epc
- sy-dep-rf
- sy-dep-sti
- sy-epc-fpc
- sy-safety-service
- sy-tm
- sytm
- technology-dep
- te-data-protection
- te-dep-crg-ci
- te-dep-crg-ml
- te-dep-crg-ml-2
- te-dep-crg-ml-3
- te-dep-meb
- te-dep-msc-cmi
- te-dep-msc-lmf
- te-dep-vsc-2-drupal8
- tedxcern
- telework-survey
- te-msc3
- te-msc-group-webpage
- te-msc-mm
- te-msc-ncm
- test-adminprocess
- test-cc60
- test-cernandsociety-dev
- testexit-questionnaire-doct
- test-foss4i-updatedd8
- test-online-webfest
- test-volunteer
- te-vsc-group-drupal
- tg-cons
- tgeant
- th-dep-photos
- timeline
- tklayout
- tmp-sce-dep
- translation-council-support-group
- tributetoteresarodrigo
- twepp-workshops-admin
- ua9-new
- ua9new
- unison-cms
- universalscience
- universalscience2019
- uointernal
- uscern-dev
- userspetition
- uslhc-networking
- value-of-training-survey
- volmeur
- volunteer-generator
- webfest-hackathon
- webfest-online
- wic
- wi-fi-mostly
- wit-old
- wlcg
- wlcg-ops
- ysc-notebook-repo