diff --git a/project_milestone_usability/README.rst b/project_milestone_usability/README.rst
new file mode 100644
index 00000000..e11b54e2
--- /dev/null
+++ b/project_milestone_usability/README.rst
@@ -0,0 +1,54 @@
+.. image:: https://img.shields.io/badge/license-AGPL--3-blue.svg
+   :target: https://opensource.org/licenses/AGPL-3.0
+   :alt: License: AGPL-3
+
+===========================
+Project Milestone Usability
+===========================
+
+This module improves the usability of project milestones in Odoo.
+
+**Features**
+
+- Menu under Project → Tasks to access Milestones.
+- Extends the milestone list view with billable status, completion status, task counts, missing tasks, UoM, quantities, project, customer, quantity percentage, reached date, sale line info, and deadline indicators (future/exceeded). Project and Customer columns are read-only here.
+- Stored computed field "Missing Tasks" (task_count - done_task_count).
+- Search view adds filters for Project, Customer, and "Has Missing Tasks" (> 0), plus group by Project and Customer.
+
+**Quick usage**
+
+1. Go to Project → Tasks → Milestones.
+2. Use the list view columns (optional show) to review/edit milestones; project/customer stay read-only.
+3. Filter by "Has Missing Tasks" to focus on pending work; group by Project or Customer as needed.
+
+**Technical details**
+
+- Model extension: `project.milestone` (stored computed `tasks_missing`).
+- Views: inherits the milestone list and adds a search view with filters/groups.
+- Action & menu: milestones action with list/form; menu under `project.menu_project_management`.
+- Dependencies: `project`, `sale_management`, `sale_project`.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues
+<https://github.com/avanzosc/project-addons/issues>`_.
+
+Credits
+=======
+
+Authors
+-------
+
+* AvanzOSC
+
+Contributors
+------------
+
+* Aner Arregi <aneravanzosc@gmail.com>
+* Ana Juaristi <anajuaristi@avanzosc.es>
+
+Maintainer
+----------
+
+This module is maintained by AvanzOSC.
diff --git a/project_milestone_usability/README.rts b/project_milestone_usability/README.rts
new file mode 100644
index 00000000..e11b54e2
--- /dev/null
+++ b/project_milestone_usability/README.rts
@@ -0,0 +1,54 @@
+.. image:: https://img.shields.io/badge/license-AGPL--3-blue.svg
+   :target: https://opensource.org/licenses/AGPL-3.0
+   :alt: License: AGPL-3
+
+===========================
+Project Milestone Usability
+===========================
+
+This module improves the usability of project milestones in Odoo.
+
+**Features**
+
+- Menu under Project → Tasks to access Milestones.
+- Extends the milestone list view with billable status, completion status, task counts, missing tasks, UoM, quantities, project, customer, quantity percentage, reached date, sale line info, and deadline indicators (future/exceeded). Project and Customer columns are read-only here.
+- Stored computed field "Missing Tasks" (task_count - done_task_count).
+- Search view adds filters for Project, Customer, and "Has Missing Tasks" (> 0), plus group by Project and Customer.
+
+**Quick usage**
+
+1. Go to Project → Tasks → Milestones.
+2. Use the list view columns (optional show) to review/edit milestones; project/customer stay read-only.
+3. Filter by "Has Missing Tasks" to focus on pending work; group by Project or Customer as needed.
+
+**Technical details**
+
+- Model extension: `project.milestone` (stored computed `tasks_missing`).
+- Views: inherits the milestone list and adds a search view with filters/groups.
+- Action & menu: milestones action with list/form; menu under `project.menu_project_management`.
+- Dependencies: `project`, `sale_management`, `sale_project`.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues
+<https://github.com/avanzosc/project-addons/issues>`_.
+
+Credits
+=======
+
+Authors
+-------
+
+* AvanzOSC
+
+Contributors
+------------
+
+* Aner Arregi <aneravanzosc@gmail.com>
+* Ana Juaristi <anajuaristi@avanzosc.es>
+
+Maintainer
+----------
+
+This module is maintained by AvanzOSC.
diff --git a/project_milestone_usability/__init__.py b/project_milestone_usability/__init__.py
new file mode 100644
index 00000000..0650744f
--- /dev/null
+++ b/project_milestone_usability/__init__.py
@@ -0,0 +1 @@
+from . import models
diff --git a/project_milestone_usability/__manifest__.py b/project_milestone_usability/__manifest__.py
new file mode 100644
index 00000000..36623f32
--- /dev/null
+++ b/project_milestone_usability/__manifest__.py
@@ -0,0 +1,18 @@
+# Copyright 2025 Aner Arregi - AvanzOSC
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+{
+    "name": "Project Milestone Usability",
+    "version": "18.0.1.0.0",
+    "category": "Project",
+    "summary": "Expose project milestones list with extra fields and filters",
+    "depends": ["project", "sale_management", "sale_project"],
+    "data": [
+        "views/project_milestone_views.xml",
+    ],
+    "application": False,
+    "installable": True,
+    "auto_install": False,
+    "author": "AvanzOSC",
+    "license": "AGPL-3",
+    "website": "https://github.com/avanzosc/project-addons",
+}
diff --git a/project_milestone_usability/i18n/es.po b/project_milestone_usability/i18n/es.po
new file mode 100644
index 00000000..49945e37
--- /dev/null
+++ b/project_milestone_usability/i18n/es.po
@@ -0,0 +1,76 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#   * project_milestone_usability
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 18.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2025-12-18 00:00+0000\n"
+"PO-Revision-Date: 2025-12-18 00:00+0000\n"
+"Last-Translator: \n"
+"Language-Team: Spanish\n"
+"Language: es\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#. module: project_milestone_usability
+#: model:ir.ui.menu,menu_project_milestone
+#: model:ir.actions.act_window,name:project_milestone_usability.action_project_milestone
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_search_enhanced
+msgid "Milestones"
+msgstr "Hitos"
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_search_enhanced
+msgid "Has Missing Tasks"
+msgstr "Tiene tareas faltantes"
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_search_enhanced
+msgid "Project"
+msgstr "Proyecto"
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_search_enhanced
+msgid "Customer"
+msgstr "Cliente"
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_tree_enhanced
+msgid "Tasks"
+msgstr "Tareas"
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_tree_enhanced
+msgid "Done Tasks"
+msgstr "Tareas hechas"
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_tree_enhanced
+#: model:ir.model.fields,field_description:project_milestone_usability.field_project_milestone_tasks_missing
+msgid "Missing Tasks"
+msgstr "Tareas faltantes"
+
+#. module: project_milestone_usability
+#: model:ir.model.fields,help:project_milestone_usability.field_project_milestone_tasks_missing
+msgid "Difference between total tasks and completed tasks."
+msgstr "Diferencia entre el total de tareas y las tareas completadas."
+
+#. module: project_milestone_usability
+#: model:ir.model,name:project_milestone_usability.model_project_milestone
+msgid "Project Milestone"
+msgstr "Hito de proyecto"
+
+#. module: project_milestone_usability
+#: model:ir.ui.view,name:project_milestone_usability.view_project_milestone_tree_enhanced
+msgid "project.milestone.tree.enhanced"
+msgstr "project.milestone.tree.enhanced"
+
+#. module: project_milestone_usability
+#: model:ir.ui.view,name:project_milestone_usability.view_project_milestone_search_enhanced
+msgid "project.milestone.search.enhanced"
+msgstr "project.milestone.search.enhanced"
+
diff --git a/project_milestone_usability/i18n/project_milestone_usability.pot b/project_milestone_usability/i18n/project_milestone_usability.pot
new file mode 100644
index 00000000..a096ec7a
--- /dev/null
+++ b/project_milestone_usability/i18n/project_milestone_usability.pot
@@ -0,0 +1,75 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#   * project_milestone_usability
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 18.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2025-12-18 00:00+0000\n"
+"PO-Revision-Date: 2025-12-18 00:00+0000\n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#. module: project_milestone_usability
+#: model:ir.ui.menu,menu_project_milestone
+#: model:ir.actions.act_window,name:project_milestone_usability.action_project_milestone
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_search_enhanced
+msgid "Milestones"
+msgstr ""
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_search_enhanced
+msgid "Has Missing Tasks"
+msgstr ""
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_search_enhanced
+msgid "Project"
+msgstr ""
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_search_enhanced
+msgid "Customer"
+msgstr ""
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_tree_enhanced
+msgid "Tasks"
+msgstr ""
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_tree_enhanced
+msgid "Done Tasks"
+msgstr ""
+
+#. module: project_milestone_usability
+#: model_terms:ir.ui.view,arch_db:project_milestone_usability.view_project_milestone_tree_enhanced
+#: model:ir.model.fields,field_description:project_milestone_usability.field_project_milestone_tasks_missing
+msgid "Missing Tasks"
+msgstr ""
+
+#. module: project_milestone_usability
+#: model:ir.model.fields,help:project_milestone_usability.field_project_milestone_tasks_missing
+msgid "Difference between total tasks and completed tasks."
+msgstr ""
+
+#. module: project_milestone_usability
+#: model:ir.model,name:project_milestone_usability.model_project_milestone
+msgid "Project Milestone"
+msgstr ""
+
+#. module: project_milestone_usability
+#: model:ir.ui.view,name:project_milestone_usability.view_project_milestone_tree_enhanced
+msgid "project.milestone.tree.enhanced"
+msgstr ""
+
+#. module: project_milestone_usability
+#: model:ir.ui.view,name:project_milestone_usability.view_project_milestone_search_enhanced
+msgid "project.milestone.search.enhanced"
+msgstr ""
+
diff --git a/project_milestone_usability/models/__init__.py b/project_milestone_usability/models/__init__.py
new file mode 100644
index 00000000..641b2d6c
--- /dev/null
+++ b/project_milestone_usability/models/__init__.py
@@ -0,0 +1 @@
+from . import milestone
diff --git a/project_milestone_usability/models/milestone.py b/project_milestone_usability/models/milestone.py
new file mode 100644
index 00000000..c7e3bf1c
--- /dev/null
+++ b/project_milestone_usability/models/milestone.py
@@ -0,0 +1,22 @@
+# Copyright 2025 AvanzOSC
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+from odoo import api, fields, models
+
+
+class ProjectMilestone(models.Model):
+    _inherit = "project.milestone"
+
+    tasks_missing = fields.Integer(
+        string="Missing Tasks",
+        compute="_compute_tasks_missing",
+        store=True,
+        help="Difference between total tasks and completed tasks.",
+    )
+
+    @api.depends("task_count", "done_task_count")
+    def _compute_tasks_missing(self):
+        for milestone in self:
+            milestone.tasks_missing = (milestone.task_count or 0) - (
+                milestone.done_task_count or 0
+            )
diff --git a/project_milestone_usability/pyproject.toml b/project_milestone_usability/pyproject.toml
new file mode 100644
index 00000000..4231d0cc
--- /dev/null
+++ b/project_milestone_usability/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["whool"]
+build-backend = "whool.buildapi"
diff --git a/project_milestone_usability/views/project_milestone_views.xml b/project_milestone_usability/views/project_milestone_views.xml
new file mode 100644
index 00000000..685bca3e
--- /dev/null
+++ b/project_milestone_usability/views/project_milestone_views.xml
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+  <record id="view_project_milestone_tree_enhanced" model="ir.ui.view">
+    <field name="name">project.milestone.tree.enhanced</field>
+    <field name="model">project.milestone</field>
+    <field name="inherit_id" ref="project.project_milestone_view_tree" />
+    <field name="arch" type="xml">
+      <xpath expr="//list/button" position="before">
+        <field name="allow_billable" optional="show" />
+        <field name="can_be_marked_as_done" optional="show" />
+        <field name="task_count" string="Tasks" optional="show" />
+        <field name="done_task_count" string="Done Tasks" optional="show" />
+        <field name="tasks_missing" string="Missing Tasks" optional="show" />
+        <field name="product_uom" optional="show" />
+        <field name="product_uom_qty" optional="show" />
+        <field name="project_id" optional="show" readonly="1" />
+        <field
+          name="project_partner_id"
+          string="Customer"
+          optional="show"
+          readonly="1"
+        />
+        <field name="quantity_percentage" optional="show" />
+        <field name="reached_date" optional="show" />
+        <field name="sale_line_display_name" optional="show" />
+        <field name="is_deadline_exceeded" optional="show" />
+        <field name="is_deadline_future" optional="show" />
+      </xpath>
+    </field>
+  </record>
+
+  <record id="view_project_milestone_search_enhanced" model="ir.ui.view">
+    <field name="name">project.milestone.search.enhanced</field>
+    <field name="model">project.milestone</field>
+    <field name="arch" type="xml">
+      <search string="Milestones">
+        <field name="project_id" />
+        <field name="project_partner_id" string="Customer" />
+        <filter
+          name="missing_tasks"
+          string="Has Missing Tasks"
+          domain="[('tasks_missing', '>', 0)]"
+        />
+        <separator />
+        <filter
+          name="group_project"
+          string="Project"
+          context="{'group_by': 'project_id'}"
+        />
+        <filter
+          name="group_customer"
+          string="Customer"
+          context="{'group_by': 'project_partner_id'}"
+        />
+      </search>
+    </field>
+  </record>
+
+  <record id="action_project_milestone" model="ir.actions.act_window">
+    <field name="name">Milestones</field>
+    <field name="res_model">project.milestone</field>
+    <field name="view_mode">list,form</field>
+    <field name="view_id" ref="project.project_milestone_view_tree" />
+    <field name="search_view_id" ref="view_project_milestone_search_enhanced" />
+  </record>
+
+  <menuitem
+    id="menu_project_milestone"
+    name="Milestones"
+    parent="project.menu_project_management"
+    action="action_project_milestone"
+    sequence="40"
+  />
+</odoo>