diff --git a/activity_browser/layouts/main.py b/activity_browser/layouts/main.py
index 35f11323f..3fb6e80c8 100644
--- a/activity_browser/layouts/main.py
+++ b/activity_browser/layouts/main.py
@@ -1,10 +1,7 @@
 # -*- coding: utf-8 -*-
-import importlib.util
-import shutil
-import sys
-import traceback
+from PySide2 import QtCore, QtWidgets
 
-from PySide2 import QtCore, QtGui, QtWidgets
+import activity_browser.mod.bw2data as bd
 
 from ..signals import signals
 from ..ui.icons import qicons
@@ -77,6 +74,11 @@ def connect_signals(self):
         # Keyboard shortcuts
         signals.restore_cursor.connect(self.restore_user_control)
 
+        bd.projects.current_changed.connect(self.set_titlebar)
+
+    def set_titlebar(self):
+        self.setWindowTitle(f"Activity Browser - {bd.projects.current}")
+
     def add_tab_to_panel(self, obj, label, side):
         panel = self.left_panel if side == "left" else self.right_panel
         panel.add_tab(obj, label)
diff --git a/activity_browser/ui/menu_bar.py b/activity_browser/ui/menu_bar.py
index 18977b1a8..0f07970b2 100644
--- a/activity_browser/ui/menu_bar.py
+++ b/activity_browser/ui/menu_bar.py
@@ -1,3 +1,4 @@
+import os
 from PySide2 import QtGui, QtWidgets
 from PySide2.QtCore import QSize, QUrl, Slot
 
@@ -7,6 +8,8 @@
 from ..info import __version__ as ab_version
 from .icons import qicons
 
+AB_BW25 = True if os.environ.get("AB_BW25", False) else False
+
 
 class MenuBar(QtWidgets.QMenuBar):
     def __init__(self, window):
@@ -46,6 +49,7 @@ def connect_signals(self):
 
     def setup_file_menu(self) -> None:
         """Build the menu for specific importing/export/updating actions."""
+        self.file_menu.addMenu(ProjectsMenu(self))
         self.file_menu.addAction(self.new_proj_action)
         self.file_menu.addAction(self.dup_proj_action)
         self.file_menu.addAction(self.delete_proj_action)
@@ -92,7 +96,7 @@ def setup_help_menu(self) -> None:
             "&About Qt", lambda: QtWidgets.QMessageBox.aboutQt(self.window)
         )
         self.help_menu.addAction(
-            qicons.question, "&Get help on the wiki", self.open_wiki()
+            qicons.question, "&Get help on the wiki", self.open_wiki
         )
         self.help_menu.addAction(
             qicons.issue, "&Report an idea/issue on GitHub", self.raise_issue_github
@@ -134,6 +138,47 @@ def biosphere_exists(self) -> None:
         self.import_db_action.setEnabled(exists)
 
 
+class ProjectsMenu(QtWidgets.QMenu):
+    """
+    Menu that lists all the projects available through bw2data.projects
+    """
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.setTitle("Open project")
+        self.populate()
+
+        self.aboutToShow.connect(self.populate)
+        self.triggered.connect(lambda act: bd.projects.set_current(act.text()))
+
+    def populate(self):
+        """
+        Populates the menu with the projects available in the database
+        """
+        import bw2data as bd
+
+        # clear the menu of any already existing actions
+        self.clear()
+
+        # sort projects alphabetically
+        sorted_projects = sorted(list(bd.projects))
+
+        # iterate over the sorted projects and add them as actions to the menu
+        for i, proj in enumerate(sorted_projects):
+            # check whether the project is BW25
+            bw_25 = (
+                False if not isinstance(proj.data, dict) else proj.data.get("25", False)
+            )
+
+            # add BW25 decorations if necessary
+            name = proj.name if not bw_25 or AB_BW25 else "[BW25] " + proj.name
+
+            # create the action and disable it if it's BW25 and BW25 is not supported
+            action = QtWidgets.QAction(name, self)
+            action.setEnabled(not bw_25 or AB_BW25)
+
+            self.addAction(action)
+
+
 class MigrationsMenu(QtWidgets.QMenu):
     def __init__(self, parent=None) -> None:
         super().__init__(parent)
@@ -143,5 +188,3 @@ def __init__(self, parent=None) -> None:
 
         self.addAction(self.install_migrations_action)
 
-
-