Addon Manager: Preference to hide unlicensed

src/Mod/AddonManager/AddonManagerOptions.ui

@@ -90,6 +90,22 @@ installed addons will be checked for available updates
      </item>
     </layout>
    </item>
+   <item>
+    <widget class="Gui::PrefCheckBox" name="guiprefcheckboxhideunlicensed">
+     <property name="text">
+      <string>Hide Addons without a license</string>
+     </property>
+     <property name="checked">
+      <bool>true</bool>
+     </property>
+     <property name="prefEntry" stdset="0">
+      <cstring>HideUnlicensed</cstring>
+     </property>
+     <property name="prefPath" stdset="0">
+      <cstring>Addons</cstring>
+     </property>
+    </widget>
+   </item>
    <item>
     <widget class="Gui::PrefCheckBox" name="guiprefcheckboxhidenonfsf">
      <property name="text">

src/Mod/AddonManager/addonmanager_preferences_defaults.json

@@ -14,6 +14,9 @@
     "HideNewerFreeCADRequired": true,
     "HideObsolete": true,
     "HidePy2": true,
+    "HideNonOSIApproved": false,
+    "HideNonFSFFreeLibre": false,
+    "HideUnlicensed": false,
     "KnownPythonVersions": "[]",
     "LastCacheUpdate": "never",
     "MacroCacheUpdateFrequency": 7,

src/Mod/AddonManager/package_list.py

@@ -96,8 +96,11 @@ class PackageList(QtWidgets.QWidget):
         self.item_filter.setHidePy2(pref.GetBool("HidePy2", True))
         self.item_filter.setHideObsolete(pref.GetBool("HideObsolete", True))
         self.item_filter.setHideNonOSIApproved(pref.GetBool("HideNonOSIApproved", True))
-        self.item_filter.setHideNonFSFLibre(pref.GetBool("HideNonFSFFreeLibre", True))
-        self.item_filter.setHideNewerFreeCADRequired(pref.GetBool("HideNewerFreeCADRequired", True))
+        self.item_filter.setHideNonFSFLibre(pref.GetBool("HideNonFSFFreeLibre", False))
+        self.item_filter.setHideNewerFreeCADRequired(
+            pref.GetBool("HideNewerFreeCADRequired", False)
+        )
+        self.item_filter.setHideUnlicensed(pref.GetBool("HideUnlicensed", False))
 
     def on_listPackages_clicked(self, index: QtCore.QModelIndex):
         """Determine what addon was selected and emit the itemSelected signal with it as
@@ -473,6 +476,7 @@ class PackageListFilter(QtCore.QSortFilterProxyModel):
         self.hide_py2 = False
         self.hide_non_OSI_approved = False
         self.hide_non_FSF_libre = False
+        self.hide_unlicensed = False
         self.hide_newer_freecad_required = False
 
     def setPackageFilter(
@@ -509,6 +513,11 @@ class PackageListFilter(QtCore.QSortFilterProxyModel):
         self.hide_non_FSF_libre = hide
         self.invalidateFilter()
 
+    def setHideUnlicensed(self, hide: bool) -> None:
+        """Sets whether to hide addons without a specified license"""
+        self.hide_unlicensed = hide
+        self.invalidateFilter()
+
     def setHideNewerFreeCADRequired(self, hide_nfr: bool) -> None:
         """Sets whether to hide packages that have indicated they need a newer version
         of FreeCAD than the one currently running."""
@@ -559,6 +568,11 @@ class PackageListFilter(QtCore.QSortFilterProxyModel):
             if self.hide_obsolete and data.obsolete:
                 return False
 
+            if self.hide_unlicensed:
+                if not data.license or data.license in ["UNLICENSED", "UNLICENCED"]:
+                    FreeCAD.Console.PrintLog(f"Hiding {data.name} because it has no license set\n")
+                    return False
+
             # If it is not an OSI-approved license, check to see if we are hiding those
             if self.hide_non_OSI_approved or self.hide_non_FSF_libre:
                 if not data.license: