diff --git a/components/common/nav-list/nav-list.css b/components/common/nav-list/nav-list.css
new file mode 100644
index 00000000..20c1e371
--- /dev/null
+++ b/components/common/nav-list/nav-list.css
@@ -0,0 +1,79 @@
+/* GitHub's NavList, as in settings and Insights: an icon per page, collapsible groups and a blue bar beside the current
+   page. Add theme-nav-list to Forgejo's vertical menu. */
+.ui.vertical.menu.theme-nav-list {
+  border: 0;
+  background: transparent;
+  box-shadow: none;
+  & > .item:not(details),
+  & > details.item > summary,
+  & > details.item > .menu > .item {
+    position: relative;
+    display: flex;
+    /* Room for the current page's bar, which sits outside the item. */
+    overflow: visible;
+    align-items: center;
+    gap: 8px;
+    min-height: 33px;
+    margin: 0;
+    padding: 6px 8px;
+    border: 0;
+    border-radius: var(--border-radius);
+    background: transparent;
+    color: var(--color-text);
+    font-size: 14px;
+    font-weight: 400;
+    line-height: 21px;
+    &:hover {
+      background: var(--github-control-transparent-bgColor-hover);
+      color: var(--color-text);
+    }
+    &:focus-visible {
+      outline: 2px solid var(--github-fgColor-accent);
+      outline-offset: -2px;
+    }
+  }
+  & > details.item {
+    display: block;
+    width: 100%;
+    padding: 0;
+    background: transparent;
+    & > summary {
+      cursor: pointer;
+    }
+    & > .menu {
+      margin: 0;
+      padding: 0;
+    }
+    /* Pages inside a group line up with their group's label, as on GitHub. */
+    & > .menu > .item {
+      padding-left: 32px;
+    }
+  }
+  & .item > .svg,
+  & summary > .svg:first-child {
+    flex: none;
+    color: var(--color-text-light-1);
+  }
+  & > .item.active,
+  & > details.item > .menu > .item.active {
+    background: var(--github-control-transparent-bgColor-active);
+    font-weight: 600;
+    &::before {
+      content: "";
+      /* Fomantic hides ::before on nested menu items with a more specific rule. */
+      display: block !important;
+      position: absolute;
+      top: 4px;
+      left: -8px;
+      width: 4px;
+      height: 24px;
+      border-radius: var(--border-radius);
+      background: var(--github-bgColor-accent-emphasis);
+    }
+  }
+  & > details.item > summary::after {
+    flex: none;
+    margin-left: auto;
+    color: var(--color-text-light-1);
+  }
+}
diff --git a/components/common/settings/settings.css b/components/common/settings/settings.css
index e6f0f0fa..0670ea57 100644
--- a/components/common/settings/settings.css
+++ b/components/common/settings/settings.css
@@ -58,86 +58,9 @@
   margin-top: 0;
 }
 
-/* Nav: GitHub's action list with an icon per page, group labels and a blue bar beside the current page. */
+/* Nav column: 256px, holding the shared nav list (components/common/nav-list). */
 .theme-settings > .flex-container-nav {
   width: 256px;
-  & > .ui.fluid.vertical.menu {
-    border: 0;
-    background: transparent;
-    box-shadow: none;
-  }
-  & > .ui.vertical.menu {
-    & > .item:not(details),
-    & > details.item > summary,
-    & > details.item > .menu > .item {
-      position: relative;
-      display: flex;
-      align-items: center;
-      gap: 8px;
-      min-height: 33px;
-      margin: 0;
-      padding: 6px 8px;
-      border: 0;
-      border-radius: var(--border-radius);
-      background: transparent;
-      color: var(--color-text);
-      font-size: 14px;
-      font-weight: 400;
-      line-height: 21px;
-      &:hover {
-        background: var(--github-control-transparent-bgColor-hover);
-        color: var(--color-text);
-      }
-      &:focus-visible {
-        outline: 2px solid var(--github-fgColor-accent);
-        outline-offset: -2px;
-      }
-    }
-    & > details.item {
-      display: block;
-      width: 100%;
-      padding: 0;
-      background: transparent;
-      & > summary {
-        cursor: pointer;
-      }
-      & > .menu {
-        margin: 0;
-        padding: 0;
-      }
-      /* Pages inside a group line up with their group's label, as on GitHub. */
-      & > .menu > .item {
-        padding-left: 32px;
-      }
-    }
-    & .item > .svg,
-    & summary > .svg:first-child {
-      flex: none;
-      color: var(--color-text-light-1);
-    }
-    & > .item.active,
-    & > details.item > .menu > .item.active {
-      background: var(--github-control-transparent-bgColor-active);
-      font-weight: 600;
-      &::before {
-        content: "";
-        /* Fomantic hides ::before on nested menu items with a more specific rule. */
-        display: block !important;
-        position: absolute;
-        top: 4px;
-        left: -8px;
-        width: 4px;
-        height: 24px;
-        border-radius: var(--border-radius);
-        background: var(--github-bgColor-accent-emphasis);
-      }
-    }
-  }
-  & > .ui.fluid.vertical.menu > details.item > summary::after {
-    flex: none;
-    margin-left: auto;
-    color: var(--color-text-light-1);
-  }
 }
 
 .theme-settings-group,
diff --git a/scripts/assembleForgejo.ts b/scripts/assembleForgejo.ts
index 69f3ff3f..a72a6fff 100644
--- a/scripts/assembleForgejo.ts
+++ b/scripts/assembleForgejo.ts
@@ -46,6 +46,7 @@ for (const directory of ["common", "project", "repository"]) {
 for (const file of [
   "commits.css",
   "dashboard-lists.css",
+  "insights.css",
   "organization.css",
   "profile-subpages.css",
   "projects.css",
diff --git a/src/build-output.test.ts b/src/build-output.test.ts
index 8fd40491..9fba01a1 100644
--- a/src/build-output.test.ts
+++ b/src/build-output.test.ts
@@ -579,6 +579,21 @@ describe("Forgejo 15 native integration", () => {
     expect(read("styles", "components", "issues", "issue.ts")).toContain(".theme-branch-name {");
   });
 
+  it("shares GitHub's nav list between settings and Insights", () => {
+    const read = (...parts: string[]) => fs.readFileSync(path.join(ROOT_DIR, ...parts), "utf-8");
+    for (const navbar of [
+      ["templates", "repo", "navbar.tmpl"],
+      ["templates", "repo", "settings", "navbar.tmpl"],
+      ["templates", "user", "settings", "navbar.tmpl"],
+      ["templates", "org", "settings", "navbar.tmpl"],
+      ["templates", "admin", "navbar.tmpl"],
+    ])
+      expect(read(...navbar)).toContain('class="ui fluid vertical menu theme-nav-list"');
+    expect(read("components", "common", "nav-list", "nav-list.css")).toContain(".ui.vertical.menu.theme-nav-list {");
+    expect(read("components", "common", "settings", "settings.css")).not.toContain("& > .item.active");
+    expect(read("templates", "repo", "activity.tmpl")).toContain("flex-container github-insights");
+  });
+
   it("matches GitHub's repository About, visibility, and code-search details", () => {
     const headerStyle = fs.readFileSync(path.join(ROOT_DIR, "styles", "templates", "repo", "header.ts"), "utf-8");
     const headerTemplate = fs.readFileSync(path.join(ROOT_DIR, "templates", "repo", "home_header.tmpl"), "utf-8");
diff --git a/styles/pages/insights.css b/styles/pages/insights.css
new file mode 100644
index 00000000..b1a49b59
--- /dev/null
+++ b/styles/pages/insights.css
@@ -0,0 +1,19 @@
+/* Insights (Forgejo's activity pages): GitHub's 256px nav list beside the page, 40px apart. Kept as a page stylesheet,
+   outside the size-limited theme files. */
+.ui.container.flex-container.github-insights {
+  gap: 40px;
+}
+
+.github-insights > .flex-container-nav {
+  width: 256px;
+}
+
+@media (max-width: 767.98px) {
+  .ui.container.flex-container.github-insights {
+    gap: 24px;
+  }
+
+  .github-insights > .flex-container-nav {
+    width: auto;
+  }
+}
diff --git a/templates/admin/navbar.tmpl b/templates/admin/navbar.tmpl
index d8400d35..e27feb47 100644
--- a/templates/admin/navbar.tmpl
+++ b/templates/admin/navbar.tmpl
@@ -1,6 +1,6 @@
 {{/* Forgejo's admin nav with GitHub's icon per top-level page; the site administration header above it names the area. */}}
 <div class="flex-container-nav">
-	<div class="ui fluid vertical menu">
+	<div class="ui fluid vertical menu theme-nav-list">
 		<a class="{{if .PageIsAdminDashboard}}active {{end}}item" href="{{AppSubUrl}}/admin">
 			{{svg "octicon-home" 16}}{{ctx.Locale.Tr "admin.dashboard"}}
 		</a>
diff --git a/templates/base/component_assets.tmpl b/templates/base/component_assets.tmpl
index df32cd6d..17e8b3cc 100644
--- a/templates/base/component_assets.tmpl
+++ b/templates/base/component_assets.tmpl
@@ -6,6 +6,7 @@
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/common/label/label.css">
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/common/list-heading/list-heading.css">
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/common/menu/menu.css">
+<link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/common/nav-list/nav-list.css">
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/common/progress/progress.css">
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/common/search/search.css">
 <script src="{{AssetUrlPrefix}}/js/components/common/search/search.js" defer></script>
@@ -26,6 +27,7 @@
 <script src="{{AssetUrlPrefix}}/js/components/repository/results/results.js" defer></script>
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/pages/commits.css">
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/pages/dashboard-lists.css">
+<link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/pages/insights.css">
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/pages/organization.css">
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/pages/profile-subpages.css">
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/components/pages/projects.css">
diff --git a/templates/org/settings/navbar.tmpl b/templates/org/settings/navbar.tmpl
index 0f6a9bda..aa29fbaf 100644
--- a/templates/org/settings/navbar.tmpl
+++ b/templates/org/settings/navbar.tmpl
@@ -1,7 +1,7 @@
 {{/* GitHub's organization settings nav: an icon per page, grouped under Access, Code, planning, and automation,
 	and Integrations. Forgejo has no strings for the group names. */}}
 <div class="flex-container-nav">
-	<div class="ui fluid vertical menu">
+	<div class="ui fluid vertical menu theme-nav-list">
 		<a class="{{if .PageIsSettingsOptions}}active {{end}}item" href="{{.OrgLink}}/settings">
 			{{svg "octicon-gear" 16}}{{ctx.Locale.Tr "org.settings.options"}}
 		</a>
diff --git a/templates/repo/activity.tmpl b/templates/repo/activity.tmpl
new file mode 100644
index 00000000..fde91497
--- /dev/null
+++ b/templates/repo/activity.tmpl
@@ -0,0 +1,18 @@
+{{/* Forgejo 17's activity pages laid out as GitHub's Insights: the nav list beside the page. */}}
+{{template "base/head" .}}
+<div role="main" aria-label="{{.Title}}" class="page-content repository commits">
+	<div class="ui container flex-container github-insights">
+		{{if and (not .IsEmptyRepo) (.Permission.CanRead $.UnitTypeCode)}}
+			<div class="flex-container-nav">
+				{{template "repo/navbar" .}}
+			</div>
+		{{end}}
+		<div class="flex-container-main">
+			{{if .PageIsPulse}}{{template "repo/pulse" .}}{{end}}
+			{{if .PageIsContributors}}{{template "repo/contributors" .}}{{end}}
+			{{if .PageIsCodeFrequency}}{{template "repo/code_frequency" .}}{{end}}
+			{{if .PageIsRecentCommits}}{{template "repo/recent_commits" .}}{{end}}
+		</div>
+	</div>
+</div>
+{{template "base/footer" .}}
diff --git a/templates/repo/navbar.tmpl b/templates/repo/navbar.tmpl
new file mode 100644
index 00000000..aa1c4513
--- /dev/null
+++ b/templates/repo/navbar.tmpl
@@ -0,0 +1,19 @@
+{{/* Forgejo 17's Insights navigation in GitHub's nav list. */}}
+{{$canReadCode := $.Permission.CanRead $.UnitTypeCode}}
+
+<div class="ui fluid vertical menu theme-nav-list">
+	<a class="{{if .PageIsPulse}}active {{end}}item" href="{{.RepoLink}}/activity">
+		{{ctx.Locale.Tr "repo.activity.navbar.pulse"}}
+	</a>
+	{{if $canReadCode}}
+		<a class="{{if .PageIsContributors}}active {{end}}item" href="{{.RepoLink}}/activity/contributors">
+			{{ctx.Locale.Tr "repo.activity.navbar.contributors"}}
+		</a>
+		<a class="{{if .PageIsCodeFrequency}}active{{end}} item" href="{{.RepoLink}}/activity/code-frequency">
+			{{ctx.Locale.Tr "repo.activity.navbar.code_frequency"}}
+		</a>
+		<a class="{{if .PageIsRecentCommits}}active{{end}} item" href="{{.RepoLink}}/activity/recent-commits">
+			{{ctx.Locale.Tr "repo.activity.navbar.recent_commits"}}
+		</a>
+	{{end}}
+</div>
diff --git a/templates/repo/settings/navbar.tmpl b/templates/repo/settings/navbar.tmpl
index c8dc9542..e3e43bf5 100644
--- a/templates/repo/settings/navbar.tmpl
+++ b/templates/repo/settings/navbar.tmpl
@@ -1,7 +1,7 @@
 {{/* GitHub's repository settings nav: an icon per page, grouped under Access, Code and automation, and Security.
 	Forgejo has no strings for the group names. */}}
 <div class="flex-container-nav">
-	<div class="ui fluid vertical menu">
+	<div class="ui fluid vertical menu theme-nav-list">
 		<a class="{{if .PageIsSettingsOptions}}active {{end}}item" href="{{.RepoLink}}/settings">
 			{{svg "octicon-gear" 16}}{{ctx.Locale.Tr "repo.settings.options"}}
 		</a>
diff --git a/templates/user/settings/navbar.tmpl b/templates/user/settings/navbar.tmpl
index 3a61380f..3164e13b 100644
--- a/templates/user/settings/navbar.tmpl
+++ b/templates/user/settings/navbar.tmpl
@@ -2,7 +2,7 @@
 	Integrations. Forgejo has no strings for the group names. */}}
 {{if not .HideNavbarLinks}}
 <div class="flex-container-nav">
-	<div class="ui fluid vertical menu">
+	<div class="ui fluid vertical menu theme-nav-list">
 		<a class="{{if .PageIsSettingsProfile}}active {{end}}item" href="{{AppSubUrl}}/user/settings">
 			{{svg "octicon-person" 16}}{{ctx.Locale.Tr "settings.profile"}}
 		</a>