diff --git a/app/imports/client/ui/creature/CreatureForm.vue b/app/imports/client/ui/creature/CreatureForm.vue
index ee199b90..bd5426ea 100644
--- a/app/imports/client/ui/creature/CreatureForm.vue
+++ b/app/imports/client/ui/creature/CreatureForm.vue
@@ -2,18 +2,21 @@
   <div class="creature-form">
     <text-field
       label="Name"
+      :disabled="!editPermission"
       :value="model.name"
       :error-messages="errors.name"
       @change="(value, ack) => $emit('change', {path: ['name'], value, ack})"
     />
     <text-field
       label="Alignment"
+      :disabled="!editPermission"
       :value="model.alignment"
       :error-messages="errors.alignment"
       @change="(value, ack) => $emit('change', {path: ['alignment'], value, ack})"
     />
     <text-field
       label="Gender"
+      :disabled="!editPermission"
       :value="model.gender"
       :error-messages="errors.gender"
       @change="(value, ack) => $emit('change', {path: ['gender'], value, ack})"
@@ -21,6 +24,7 @@
     <text-field
       label="Picture URL"
       hint="A link to a high resolution image"
+      :disabled="!editPermission"
       :value="model.picture"
       :error-messages="errors.picture"
       @change="(value, ack) => $emit('change', {path: ['picture'], value, ack})"
@@ -28,6 +32,7 @@
     <text-field
       label="Avatar picture URL"
       hint="A link to a smaller, square image to use as an avatar"
+      :disabled="!editPermission"
       :value="model.avatarPicture"
       :error-messages="errors.avatarPicture"
       @change="(value, ack) => $emit('change', {path: ['avatarPicture'], value, ack})"
@@ -36,21 +41,25 @@
       <form-section name="Settings">
         <v-switch
           label="Hide redundant stats"
+          :disabled="!editPermission"
           :input-value="model.settings.hideUnusedStats"
           @change="value => $emit('change', {path: ['settings','hideUnusedStats'], value: !!value})"
         />
         <v-switch
           label="Hide rest buttons"
+          :disabled="!editPermission"
           :input-value="model.settings.hideRestButtons"
           @change="value => $emit('change', {path: ['settings','hideRestButtons'], value: !!value})"
         />
         <v-switch
           label="Show spells tab"
+          :disabled="!editPermission"
           :input-value="!model.settings.hideSpellsTab"
           @change="changeHideSpellsTab"
         />
         <v-switch
           label="Show tree tab"
+          :disabled="!editPermission"
           :input-value="model.settings.showTreeTab"
           @change="changeShowTreeTab"
         />
@@ -62,6 +71,7 @@
           min="0"
           max="1"
           step="0.1"
+          :disabled="!editPermission"
           :value="model.settings.hitDiceResetMultiplier"
           @change="(value, ack) => $emit('change', {path: ['settings','hitDiceResetMultiplier'], value, ack})"
         />
@@ -69,6 +79,7 @@
           label="Discord Webhook URL"
           hint="This creature's logs will be posted to the discord channel"
           placeholder="https://discordapp.com/api/webhooks/<id>/<token>"
+          :disabled="!editPermission"
           :value="model.settings.discordWebhook"
           @change="(value, ack) => $emit('change', {path: ['settings','discordWebhook'], value, ack})"
         />
@@ -96,12 +107,13 @@
       <form-section name="Libraries">
         <smart-switch
           label="All user libraries"
+          :disabled="!editPermission"
           :value="allUserLibraries"
           @change="allUserLibrariesChange"
         />
         <library-list
           selection
-          :disabled="!model.allowedLibraries && !model.allowedLibraryCollections"
+          :disabled="!editPermission || (!model.allowedLibraries && !model.allowedLibraryCollections)"
           :libraries-selected="model.allowedLibraries"
           :library-collections-selected="model.allowedLibraryCollections"
           :libraries-selected-by-collections="librariesSelectedByCollections"
@@ -142,6 +154,7 @@ import FormSection, { FormSections } from '/imports/client/ui/properties/forms/s
 import LibraryList from '/imports/client/ui/library/LibraryList.vue';
 import LibraryCollections from '/imports/api/library/LibraryCollections.js';
 import { changeAllowedLibraries, toggleAllUserLibraries } from '/imports/api/creature/creatures/methods/changeAllowedLibraries.js';
+import { assertEditPermission } from '/imports/api/creature/creatures/creaturePermissions.js';
 
 export default {
   components: {
@@ -227,6 +240,14 @@ export default {
       });
       return ids;
     },
+    editPermission() {
+      try {
+        assertEditPermission(this.model, Meteor.userId());
+        return true;
+      } catch (e) {
+        return false;
+      }
+    },
   },
   methods: {
     changeShowTreeTab(value) {
diff --git a/app/imports/client/ui/creature/character/CharacterSheetToolbar.vue b/app/imports/client/ui/creature/character/CharacterSheetToolbar.vue
index 6878df30..b2283855 100644
--- a/app/imports/client/ui/creature/character/CharacterSheetToolbar.vue
+++ b/app/imports/client/ui/creature/character/CharacterSheetToolbar.vue
@@ -29,10 +29,10 @@
             bottom
             left
             transition="slide-y-transition"
-            data-id="creature-menu"
           >
             <template #activator="{ on }">
               <v-btn
+                data-id="creature-menu"
                 icon
                 v-on="on"
               >
@@ -40,6 +40,35 @@
               </v-btn>
             </template>
             <v-list>
+              <v-list-item
+                v-if="!isOwner && ownerName"
+                two-line
+                disabled
+              >
+                <v-list-item-avatar>
+                  <v-icon>
+                    mdi-account
+                  </v-icon>
+                </v-list-item-avatar>
+                <v-list-item-content>
+                  <v-list-item-title>
+                    {{ ownerName }}
+                  </v-list-item-title>
+                  <v-list-item-subtitle>
+                    Sheet owner
+                  </v-list-item-subtitle>
+                </v-list-item-content>
+              </v-list-item>
+              <v-list-item
+                v-if="!isOwner"
+                @click="unshareWithMe"
+              >
+                <v-list-item-title>
+                  <v-icon left>
+                    mdi-cancel
+                  </v-icon> Unshare with me
+                </v-list-item-title>
+              </v-list-item>
               <v-list-item :to="printUrl">
                 <v-list-item-title>
                   <v-icon left>
@@ -47,37 +76,31 @@
                   </v-icon> Print
                 </v-list-item-title>
               </v-list-item>
-              <template v-if="editPermission">
-                <v-list-item @click="deleteCharacter">
-                  <v-list-item-title>
-                    <v-icon left>
-                      mdi-delete
-                    </v-icon> Delete
-                  </v-list-item-title>
-                </v-list-item>
-                <v-list-item @click="showCharacterForm">
-                  <v-list-item-title>
-                    <v-icon left>
-                      mdi-pencil
-                    </v-icon> Edit details
-                  </v-list-item-title>
-                </v-list-item>
-                <v-list-item @click="showShareDialog">
-                  <v-list-item-title>
-                    <v-icon left>
-                      mdi-share-variant
-                    </v-icon> Sharing
-                  </v-list-item-title>
-                </v-list-item>
-              </template>
+              <v-list-item @click="showCharacterForm">
+                <v-list-item-title>
+                  <v-icon left>
+                    mdi-pencil
+                  </v-icon> Edit details
+                </v-list-item-title>
+              </v-list-item>
               <v-list-item
-                v-else
-                @click="unshareWithMe"
+                :disabled="!isOwner"
+                @click="showShareDialog"
+              >
+                <v-list-item-title>
+                  <v-icon left>
+                    mdi-share-variant
+                  </v-icon> Sharing
+                </v-list-item-title>
+              </v-list-item>
+              <v-list-item
+                :disabled="!isOwner"
+                @click="deleteCharacter"
               >
                 <v-list-item-title>
                   <v-icon left>
                     mdi-delete
-                  </v-icon> Unshare with me
+                  </v-icon> Delete
                 </v-list-item-title>
               </v-list-item>
             </v-list>
@@ -266,6 +289,15 @@ export default {
         return false;
       }
     },
+    isOwner() {
+      if (!this.creature) return;
+      return Meteor.userId() === this.creature.owner;
+    },
+    ownerName() {
+      if (!this.creature) return;
+      const username = Meteor.users.findOne(this.creature.owner)?.username;
+      return username;
+    },
   },
 }
 </script>
diff --git a/app/imports/client/ui/library/LibraryCollectionEditDialog.vue b/app/imports/client/ui/library/LibraryCollectionEditDialog.vue
index 11977d30..90649d86 100644
--- a/app/imports/client/ui/library/LibraryCollectionEditDialog.vue
+++ b/app/imports/client/ui/library/LibraryCollectionEditDialog.vue
@@ -8,6 +8,7 @@
       <v-btn
         icon
         data-id="share-library-button"
+        :disabled="!isOwner"
         @click="share"
       >
         <v-icon>mdi-share-variant</v-icon>
@@ -15,12 +16,32 @@
       <v-btn
         icon
         data-id="delete-library-button"
+        :disabled="!isOwner"
         @click="remove"
       >
         <v-icon>mdi-delete</v-icon>
       </v-btn>
     </template>
     <template v-if="model">
+      <v-list-item
+        v-if="!isOwner"
+        class="px-0"
+        two-line
+      >
+        <v-list-item-avatar>
+          <v-icon>
+            mdi-account
+          </v-icon>
+        </v-list-item-avatar>
+        <v-list-item-content>
+          <v-list-item-title>
+            {{ ownerName || '?' }}
+          </v-list-item-title>
+          <v-list-item-subtitle>
+            Collection owner
+          </v-list-item-subtitle>
+        </v-list-item-content>
+      </v-list-item>
       <text-field
         label="name"
         :value="model.name"
@@ -33,6 +54,7 @@
       />
       <smart-switch
         :value="model.showInMarket"
+        :disabled="!isOwner"
         label="Show in community library browser"
         @change="(showInMarket, ack) => updateLibraryCollection({showInMarket}, ack)"
       />
@@ -121,6 +143,9 @@ export default {
   meteor: {
     '$subscribe': {
       libraries: [],
+      libraryCollection() {
+        return [this._id]
+      },
     },
     model() {
       return LibraryCollections.findOne(this._id);
@@ -144,6 +169,15 @@ export default {
         };
       });
     },
+    isOwner() {
+      if (!this.model) return;
+      return Meteor.userId() === this.model.owner;
+    },
+    ownerName() {
+      if (!this.model) return;
+      const username = Meteor.users.findOne(this.model.owner)?.username;
+      return username;
+    },
   }
 }
 </script>
diff --git a/app/imports/client/ui/library/LibraryEditDialog.vue b/app/imports/client/ui/library/LibraryEditDialog.vue
index 29bd535c..772d9625 100644
--- a/app/imports/client/ui/library/LibraryEditDialog.vue
+++ b/app/imports/client/ui/library/LibraryEditDialog.vue
@@ -8,6 +8,7 @@
       <v-btn
         icon
         data-id="share-library-button"
+        :disabled="!isOwner"
         @click="share"
       >
         <v-icon>mdi-share-variant</v-icon>
@@ -15,12 +16,32 @@
       <v-btn
         icon
         data-id="delete-library-button"
+        :disabled="!isOwner"
         @click="remove"
       >
         <v-icon>mdi-delete</v-icon>
       </v-btn>
     </template>
     <template v-if="model">
+      <v-list-item
+        v-if="!isOwner && ownerName"
+        class="px-0"
+        two-line
+      >
+        <v-list-item-avatar>
+          <v-icon>
+            mdi-account
+          </v-icon>
+        </v-list-item-avatar>
+        <v-list-item-content>
+          <v-list-item-title>
+            {{ ownerName }}
+          </v-list-item-title>
+          <v-list-item-subtitle>
+            Library owner
+          </v-list-item-subtitle>
+        </v-list-item-content>
+      </v-list-item>
       <text-field
         label="name"
         :value="model.name"
@@ -33,6 +54,7 @@
       />
       <smart-switch
         :value="model.showInMarket"
+        :disabled="!isOwner"
         label="Show in community library browser"
         @change="updateShowInMarket"
       />
@@ -170,7 +192,16 @@ export default {
       }, {
         sort: { order: 1 },
       });
-    }
+    },
+    isOwner() {
+      if (!this.model) return;
+      return Meteor.userId() === this.model.owner;
+    },
+    ownerName() {
+      if (!this.model) return;
+      const username = Meteor.users.findOne(this.model.owner)?.username;
+      return username;
+    },
   }
 }
 </script>
diff --git a/app/imports/server/publications/library.js b/app/imports/server/publications/library.js
index cae264a9..5499f246 100644
--- a/app/imports/server/publications/library.js
+++ b/app/imports/server/publications/library.js
@@ -82,7 +82,14 @@ Meteor.publish('libraryCollection', function (libraryCollectionId) {
         }, {
           sort: { name: 1 }
         });
-        return [libraryCollectionCursor, libraryCursor];
+        return [
+          libraryCollectionCursor,
+          libraryCursor,
+          Meteor.users.find(
+            libraryCollection.owner,
+            { fields: { username: 1 } }
+          ),
+        ];
       });
     });
   })
@@ -148,13 +155,21 @@ Meteor.publish('browseLibraries', function () {
       showInMarket: true,
       public: true,
     }, {
-      sort: { name: 1 }
+      sort: {
+        subscriberCount: 1,
+        name: 1,
+      },
+      limit: 500,
     }),
     LibraryCollections.find({
       showInMarket: true,
       public: true,
     }, {
-      sort: { name: 1 }
+      sort: {
+        subscriberCount: 1,
+        name: 1
+      },
+      limit: 500,
     }),
   ];
 });
@@ -169,9 +184,15 @@ Meteor.publish('library', function (libraryId) {
     catch (e) {
       return this.error(e);
     }
-    return Libraries.find({
-      _id: libraryId,
-    });
+    return [
+      Libraries.find({
+        _id: libraryId,
+      }),
+      Meteor.users.find(
+        library.owner,
+        { fields: { username: 1 } }
+      ),
+    ];
   });
 });
 
diff --git a/app/imports/server/publications/singleCharacter.js b/app/imports/server/publications/singleCharacter.js
index 28d2da6f..b41c9dcd 100644
--- a/app/imports/server/publications/singleCharacter.js
+++ b/app/imports/server/publications/singleCharacter.js
@@ -19,10 +19,10 @@ Meteor.publish('singleCharacter', function (creatureId) {
   const self = this;
   try {
     schema.validate({ creatureId });
-  } catch (e){
+  } catch (e) {
     this.error(e);
   }
-  this.autorun(function (computation){
+  this.autorun(function (computation) {
     let userId = this.userId;
     let permissionCreature = Creatures.findOne({
       _id: creatureId,
@@ -32,11 +32,11 @@ Meteor.publish('singleCharacter', function (creatureId) {
     try { assertViewPermission(permissionCreature, userId) }
     catch (e) { return [] }
     loadCreature(creatureId, self);
-    if (permissionCreature.computeVersion !== VERSION && computation.firstRun){
+    if (permissionCreature.computeVersion !== VERSION && computation.firstRun) {
       try {
         computeCreature(creatureId)
       }
-      catch(e){ console.error(e) }
+      catch (e) { console.error(e) }
     }
     return [
       Creatures.find({
@@ -52,7 +52,13 @@ Meteor.publish('singleCharacter', function (creatureId) {
         creatureId,
       }, {
         limit: 20,
-        sort: {date: -1},
+        sort: { date: -1 },
+      }),
+      // Also publish the owner's username
+      Meteor.users.find(permissionCreature.owner, {
+        fields: {
+          username: 1,
+        },
       }),
     ];
   });