diff --git a/antora-playbook.yml b/antora-playbook.yml
index 87141ef60b2..065cd5ca72d 100644
--- a/antora-playbook.yml
+++ b/antora-playbook.yml
@@ -41,6 +41,29 @@ content:
   - url: ./
     start_path: openidm
     edit_url: https://github.com/OpenIdentityPlatform/OpenIDM/edit/master/openidm-doc/src/main/asciidoc
+  # Older versions: the last release of each previous major line, from the tags the product release
+  # workflows put on this repository. One tag per source; lib/versions-from-tags.js reads the tag
+  # (fetching it from origin if missing) and turns it into the version: OpenAM-15.2.2 -> 15.2.
+  - url: ./
+    start_path: opendj
+    branches: ~
+    tags: OpenDJ-4.10.2
+    edit_url: false
+  - url: ./
+    start_path: openig
+    branches: ~
+    tags: OpenIG-5.3.2
+    edit_url: false
+  - url: ./
+    start_path: openam
+    branches: ~
+    tags: OpenAM-15.2.2
+    edit_url: false
+  - url: ./
+    start_path: openidm
+    branches: ~
+    tags: OpenIDM-6.3.0
+    edit_url: false
 ui:
   bundle:
     url: https://gitlab.com/antora/antora-ui-default/-/jobs/artifacts/HEAD/raw/build/ui-bundle.zip?job=bundle-stable
@@ -52,6 +75,7 @@ output:
 
 antora:
   extensions:
+  - ./lib/versions-from-tags.js
   - ./lib/add-pdf-link.js
 
 
diff --git a/docsearch/config.json b/docsearch/config.json
index 7c8c40c280c..18f94a128b4 100644
--- a/docsearch/config.json
+++ b/docsearch/config.json
@@ -39,7 +39,8 @@
         "https://doc.openidentityplatform.org/openig/apidocs",
         "https://doc.openidentityplatform.org/commons/apidocs",
         "https://doc.openidentityplatform.org/openicf/apidocs",
-        "https://doc.openidentityplatform.org/openidm/apidocs"
+        "https://doc.openidentityplatform.org/openidm/apidocs",
+        "https://doc.openidentityplatform.org/[a-z]+/[0-9]+\\.[0-9]+/"
     ],
     "selectors": {
         "default": {
diff --git a/lib/add-pdf-link.js b/lib/add-pdf-link.js
index a6503129767..eed729a475f 100644
--- a/lib/add-pdf-link.js
+++ b/lib/add-pdf-link.js
@@ -1,3 +1,18 @@
+/*
+ * The contents of this file are subject to the terms of the Common Development and
+ * Distribution License (the License). You may not use this file except in compliance with the
+ * License.
+ *
+ * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
+ * specific language governing permission and limitations under the License.
+ *
+ * When distributing Covered Software, include this CDDL Header Notice in each file and include
+ * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
+ * Header, with the fields enclosed by brackets [] replaced by your own identifying
+ * information: "Portions copyright [year] [name of copyright owner]".
+ *
+ * Copyright 2024-2026 3A Systems, LLC.
+ */
 
 module.exports.register = function () {
     this.on('navigationBuilt', ({contentCatalog}) => {
@@ -9,7 +24,8 @@ module.exports.register = function () {
         });            
         
         contentCatalog.getFiles().forEach((file) => {
-            if(file.asciidoc && file.asciidoc.attributes) {
+            // the PDFs are built from the current sources, so older versions get no PDF link
+            if(file.asciidoc && file.asciidoc.attributes && file.src.version === contentCatalog.getComponent(file.src.component)?.latest?.version) {
                 if(compomentsPdfs[file.src.component] && compomentsPdfs[file.src.component][file.src.module]) {
                     const pdfLink =  compomentsPdfs[file.src.component][file.src.module];
                     file.asciidoc.attributes['page-pdflink'] = pdfLink;
diff --git a/lib/versions-from-tags.js b/lib/versions-from-tags.js
new file mode 100644
index 00000000000..875d2541e4d
--- /dev/null
+++ b/lib/versions-from-tags.js
@@ -0,0 +1,105 @@
+/*
+ * The contents of this file are subject to the terms of the Common Development and
+ * Distribution License (the License). You may not use this file except in compliance with the
+ * License.
+ *
+ * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
+ * specific language governing permission and limitations under the License.
+ *
+ * When distributing Covered Software, include this CDDL Header Notice in each file and include
+ * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
+ * Header, with the fields enclosed by brackets [] replaced by your own identifying
+ * information: "Portions copyright [year] [name of copyright owner]".
+ *
+ * Copyright 2026 3A Systems, LLC.
+ */
+
+'use strict'
+
+// Publishes release tags of this repository (OpenAM-15.2.2 etc.) as older versions of a component.
+//
+// A content source that names a tag is not read by Antora from the git tree, for two reasons:
+// - the antora.yml of every tag declares `version: ~`, and Antora gives the version in antora.yml
+//   precedence over the version of the content source, so the tag would be merged into the
+//   unversioned component version built from the branch;
+// - Antora reads every file under the start path of a git tree, and the start path of a tag also
+//   holds the API docs of that time (18,672 files for OpenAM-15.2.2, against 330 pages), which
+//   makes the build several times slower.
+// Instead, only antora.yml and modules/ of the tag are extracted with `git archive` into a
+// temporary repository, which is aggregated apart from the other sources, and the result is given
+// the version of the tag: OpenAM-15.2.2 becomes version 15.2, displayed as 15.2.2. The branch
+// stays the unversioned (and latest) version, so its URLs do not change.
+// The temporary repositories are kept at a fixed path, build/antora-tags/<tag>, because Antora logs
+// the files of a tag with that path, and .github/build-baseline keys the known errors by it.
+
+const { execFileSync } = require('child_process')
+const fs = require('fs')
+const ospath = require('path')
+
+const TAG_RX = /^[^-]+-(\d+)\.(\d+)\.(\d+)$/
+
+module.exports.register = function () {
+  const logger = this.getLogger('versions-from-tags')
+  this.replaceFunctions({
+    async aggregateContent (playbook) {
+      const aggregateContent = this.require('@antora/content-aggregator')
+      const sources = playbook.content.sources
+      const withSources = (subset) => ({ ...playbook, content: { ...playbook.content, sources: subset } })
+      const aggregate = await aggregateContent(withSources(sources.filter((source) => !source.tags)))
+      const tmpdir = ospath.join(playbook.dir, 'build', 'antora-tags')
+      fs.rmSync(tmpdir, { recursive: true, force: true })
+      fs.mkdirSync(tmpdir, { recursive: true })
+      try {
+        for (const source of sources.filter((source) => source.tags)) {
+          const tag = source.tags
+          const match = typeof tag === 'string' && tag.match(TAG_RX)
+          if (!match) throw new Error(`content source ${source.startPath}: tags must name one release tag, got ${tag}`)
+          const worktree = ospath.join(tmpdir, tag)
+          extractTag(ospath.resolve(playbook.dir, source.url), tag, source.startPath, worktree, logger)
+          const tagSource = { url: worktree, branches: 'HEAD', startPath: source.startPath, editUrl: source.editUrl }
+          for (const componentVersion of await aggregateContent(withSources([tagSource]))) {
+            componentVersion.version = `${match[1]}.${match[2]}`
+            componentVersion.displayVersion = `${match[1]}.${match[2]}.${match[3]}`
+            logger.info('%s %s from tag %s', componentVersion.name, componentVersion.version, tag)
+            aggregate.push(componentVersion)
+          }
+        }
+      } finally {
+        fs.rmSync(tmpdir, { recursive: true, force: true })
+      }
+      return aggregate
+    },
+  })
+}
+
+// Extracts antora.yml and modules/ of startPath at tag into a new single-commit repository.
+// Fetches the tag from origin first if the repository does not have it, as in a CI checkout.
+function extractTag (repo, tag, startPath, worktree, logger) {
+  const git = (dir, ...args) => execFileSync('git', ['-C', dir, ...args], { encoding: 'utf8', stdio: 'pipe' })
+  try {
+    git(repo, 'rev-parse', '-q', '--verify', `refs/tags/${tag}^{commit}`)
+  } catch {
+    logger.info('fetching tag %s', tag)
+    const shallow = git(repo, 'rev-parse', '--is-shallow-repository').trim() === 'true'
+    try {
+      git(repo, 'fetch', '-q', '--no-tags', ...(shallow ? ['--depth=1'] : []), 'origin', `+refs/tags/${tag}:refs/tags/${tag}`)
+    } catch (err) {
+      // e.g. a clone of a fork created before the tag was pushed, or no network
+      throw new Error(`cannot fetch tag ${tag} from the origin of ${repo}; if the tag is missing there, run ` +
+        `git fetch https://github.com/OpenIdentityPlatform/doc.openidentityplatform.org tag ${tag}\n${err.stderr || err.message}`)
+    }
+  }
+  fs.mkdirSync(worktree)
+  const paths = [`${startPath}/antora.yml`, `${startPath}/modules`]
+  const archive = execFileSync('git', ['-C', repo, 'archive', '--format=tar', tag, '--', ...paths], {
+    maxBuffer: 1024 * 1024 * 1024,
+  })
+  // -f -: without it tar reads the archive from $TAPE or a system-dependent default device
+  execFileSync('tar', ['-x', '-f', '-', '-C', worktree], { input: archive })
+  // the branch is named after the tag, so that Antora logs the tag as the refname of its files
+  git(worktree, 'init', '-q', '-b', tag)
+  git(worktree, 'add', '-A')
+  // no hooks: a global core.hooksPath or init.templateDir hook of the developer may reject the commit
+  git(worktree, '-c', 'user.name=antora', '-c', 'user.email=antora@localhost', '-c', 'commit.gpgsign=false',
+    '-c', 'core.hooksPath=/dev/null', 'commit', '-q', '-m', tag)
+}
diff --git a/openam/antora.yml b/openam/antora.yml
index c4c5f4ee64b..dadacfee15f 100644
--- a/openam/antora.yml
+++ b/openam/antora.yml
@@ -10,11 +10,12 @@
 # Header, with the fields enclosed by brackets [] replaced by your own identifying
 # information: "Portions copyright [year] [name of copyright owner]".
 #
-# Portions Copyright 2026 3A Systems, LLC.
+# Copyright 2024-2026 3A Systems, LLC.
 
 name: openam
 title: 'OpenAM: Access Management'
 version: ~
+display_version: '16.x'
 asciidoc: 
   attributes: 
     pdfs:
diff --git a/opendj/antora.yml b/opendj/antora.yml
index 38d5826055e..f1a2bf9381b 100644
--- a/opendj/antora.yml
+++ b/opendj/antora.yml
@@ -1,6 +1,21 @@
+# The contents of this file are subject to the terms of the Common Development and
+# Distribution License (the License). You may not use this file except in compliance with the
+# License.
+#
+# You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
+# specific language governing permission and limitations under the License.
+#
+# When distributing Covered Software, include this CDDL Header Notice in each file and include
+# the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
+# Header, with the fields enclosed by brackets [] replaced by your own identifying
+# information: "Portions copyright [year] [name of copyright owner]".
+#
+# Copyright 2024-2026 3A Systems, LLC.
+
 name: opendj
 title: 'OpenDJ: Directory Services'
 version: ~
+display_version: '5.x'
 asciidoc: 
   attributes: 
     pdfs:
diff --git a/openidm/antora.yml b/openidm/antora.yml
index c6ab768d8eb..7df0719c8fc 100644
--- a/openidm/antora.yml
+++ b/openidm/antora.yml
@@ -1,6 +1,21 @@
+# The contents of this file are subject to the terms of the Common Development and
+# Distribution License (the License). You may not use this file except in compliance with the
+# License.
+#
+# You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
+# specific language governing permission and limitations under the License.
+#
+# When distributing Covered Software, include this CDDL Header Notice in each file and include
+# the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
+# Header, with the fields enclosed by brackets [] replaced by your own identifying
+# information: "Portions copyright [year] [name of copyright owner]".
+#
+# Copyright 2024-2026 3A Systems, LLC.
+
 name: openidm
 title: 'OpenIDM: Identity Management'
 version: ~
+display_version: '7.x'
 asciidoc: 
   attributes: 
     pdfs:
diff --git a/openig/antora.yml b/openig/antora.yml
index d8f2c2b04d8..13360ebbece 100644
--- a/openig/antora.yml
+++ b/openig/antora.yml
@@ -1,6 +1,21 @@
+# The contents of this file are subject to the terms of the Common Development and
+# Distribution License (the License). You may not use this file except in compliance with the
+# License.
+#
+# You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
+# specific language governing permission and limitations under the License.
+#
+# When distributing Covered Software, include this CDDL Header Notice in each file and include
+# the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
+# Header, with the fields enclosed by brackets [] replaced by your own identifying
+# information: "Portions copyright [year] [name of copyright owner]".
+#
+# Copyright 2024-2026 3A Systems, LLC.
+
 name: openig
 title: 'OpenIG: Identity Gateway'
 version: ~
+display_version: '6.x'
 #start_page: gateway-guide:preface.adoc
 asciidoc: 
   attributes: