diff --git a/src/main/scala/gsoc/contributors/all.scala b/src/main/scala/gsoc/contributors/all.scala
index 7c3e4c4..8016c93 100644
--- a/src/main/scala/gsoc/contributors/all.scala
+++ b/src/main/scala/gsoc/contributors/all.scala
@@ -9,6 +9,7 @@ val allContributors = NonEmptyList.of(
   gfinol,
   hehelego,
   synan_mannan,
+  `manoj-apj`,
   antoniojimeneznieto,
   `tanmay_008`,
   abh80,
diff --git a/src/main/scala/gsoc/contributors/manoj.scala b/src/main/scala/gsoc/contributors/manoj.scala
new file mode 100644
index 0000000..8cd38fd
--- /dev/null
+++ b/src/main/scala/gsoc/contributors/manoj.scala
@@ -0,0 +1,78 @@
+package gsoc
+package contributors
+
+import calico.html.io.{*, given}
+import calico.syntax.*
+import cats.effect.*
+import fs2.concurrent.*
+import fs2.dom.HtmlElement
+
+val `manoj-apj`: Contributor = Contributor("manoj-apj"):
+  SignallingRef[IO].of(List.empty[String]).toResource.flatMap { items =>
+    SignallingRef[IO].of("").toResource.flatMap { inputText =>
+      div(
+        styleAttr := "font-family: system-ui, sans-serif;",
+        h3("Immutable List Explorer"),
+        p(
+          i("@manoj-apj"),
+          " — I agree to follow the Typelevel Code of Conduct and GSoC AI policy."
+        ),
+        p("Linked lists have O(1) prepend but O(n) append. Build your list and feel the difference!"),
+        div(
+          input.withSelf { self =>
+            (
+              typ := "text",
+              placeholder := "enter element",
+              value <-- inputText,
+              onInput --> (_.foreach(_ => self.value.get.flatMap(inputText.set)))
+            )
+          },
+          button(
+            "Prepend · O(1)",
+            onClick --> (_.foreach(_ =>
+              inputText.get.flatMap { v =>
+                if v.trim.nonEmpty then items.update(v.trim :: _) *> inputText.set("")
+                else IO.unit
+              }))
+          ),
+          button(
+            "Append · O(n)",
+            onClick --> (_.foreach(_ =>
+              inputText.get.flatMap { v =>
+                if v.trim.nonEmpty then items.update(_ :+ v.trim) *> inputText.set("")
+                else IO.unit
+              }))
+          ),
+          button(
+            "Drop Head",
+            onClick --> (_.foreach(_ => items.update(l => if l.nonEmpty then l.tail else l)))
+          ),
+          button(
+            "Clear",
+            onClick --> (_.foreach(_ => items.set(Nil)))
+          )
+        ),
+        p(
+          styleAttr := "font-family: monospace;",
+          "List: ",
+          items.map {
+            case Nil => "(empty)"
+            case l => l.mkString("[ ", " :: ", " :: Nil ]")
+          }
+        ),
+        p("Head (O(1)): ", items.map(_.headOption.fold("—")(h => s"\"$h\""))),
+        p("Size: ", items.map(_.size.toString)),
+        p(
+          styleAttr :=
+            "background: #f0f4ff; padding: 10px 14px; border-radius: 6px; margin-top: 12px;",
+          "💡 Have ideas to make immutable lists faster? ",
+          a(
+            href := "https://discord.gg/dcAFxD8S",
+            target := "_blank",
+            styleAttr := "color: #3355cc; font-weight: bold;",
+            "Discuss in #summer-of-code on Typelevel Discord →"
+          )
+        )
+      )
+    }
+  }