diff --git a/js/src/userviewmodel.js b/js/src/userviewmodel.js
new file mode 100644
index 0000000..6a7f1c2
--- /dev/null
+++ b/js/src/userviewmodel.js
@@ -0,0 +1,79 @@
+/*
+ * μlogger
+ *
+ * Copyright(C) 2019 Bartek Fabiszewski (www.fabiszewski.net)
+ *
+ * This is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+import { auth, lang } from './initializer.js';
+import ViewModel from './viewmodel.js';
+import uSelect from './select.js';
+import uUser from './user.js';
+import uUtils from './utils.js';
+
+/**
+ * @class UserViewModel
+ */
+export default class UserViewModel extends ViewModel {
+
+  /**
+   * @param {uState} state
+   */
+  constructor(state) {
+    super({
+      /** @type {uUser[]} */
+      userList: [],
+      /** @type {string} */
+      currentUserId: '0'
+    });
+    /** @type HTMLSelectElement */
+    const listEl = document.querySelector('#user');
+    this.select = new uSelect(listEl, lang.strings['suser'], `- ${lang.strings['allusers']} -`);
+    this.state = state;
+    this.onChanged('userList', (list) => { this.select.setOptions(list); });
+    this.onChanged('currentUserId', (listValue) => {
+      this.state.showAllUsers = listValue === uSelect.allValue;
+      this.state.currentUser = this.model.userList.find((_user) => _user.listValue === listValue) || null;
+    });
+    state.onChanged('showLatest', (showLatest) => {
+      if (showLatest) {
+        this.select.showAllOption();
+      } else {
+        this.select.hideAllOption();
+      }
+    });
+    this.init();
+  }
+
+  init() {
+    this.bindAll();
+    uUser.fetchList()
+      .then((_users) => {
+      this.model.userList = _users;
+      if (_users.length) {
+        let userId = _users[0].listValue;
+        if (auth.isAuthenticated) {
+          const user = this.model.userList.find((_user) => _user.listValue === auth.user.listValue);
+          if (user) {
+            userId = user.listValue;
+          }
+        }
+        this.model.currentUserId = userId;
+      }
+    })
+      .catch((e) => { uUtils.error(e, `${lang.strings['actionfailure']}\n${e.message}`); });
+  }
+
+}
diff --git a/js/test/userviewmodel.test.js b/js/test/userviewmodel.test.js
new file mode 100644
index 0000000..f37db95
--- /dev/null
+++ b/js/test/userviewmodel.test.js
@@ -0,0 +1,213 @@
+/*
+ * μlogger
+ *
+ * Copyright(C) 2019 Bartek Fabiszewski (www.fabiszewski.net)
+ *
+ * This is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+import { auth, config, lang } from '../src/initializer.js';
+import UserViewModel from '../src/userviewmodel.js';
+import ViewModel from '../src/viewmodel.js';
+import uObserve from '../src/observe.js';
+import uSelect from '../src/select.js';
+import uState from '../src/state.js';
+import uUser from '../src/user.js';
+
+describe('UserViewModel tests', () => {
+
+  let state;
+  let user1;
+  let user2;
+  let users;
+  /** @type {HTMLSelectElement} */
+  let userEl;
+
+  beforeEach(() => {
+    const fixture = `<div id="fixture">
+                      <div class="section">
+                        <label for="user">user</label>
+                        <select id="user" data-bind="currentUserId" name="user"></select>
+                      </div>
+                    </div>`;
+    document.body.insertAdjacentHTML('afterbegin', fixture);
+    userEl = document.querySelector('#user');
+    config.initialize();
+    lang.init(config);
+    lang.strings['suser'] = 'select user';
+    lang.strings['allusers'] = 'all users';
+    state = new uState();
+    user1 = new uUser(1, 'user1');
+    user2 = new uUser(2, 'user2');
+    users = [ user1, user2 ];
+  });
+
+  afterEach(() => {
+    document.body.removeChild(document.querySelector('#fixture'));
+    auth.user = null;
+  });
+
+  it('should create instance with state as parameter and load user list and select first user on list', (done) => {
+    // given
+    spyOn(uUser, 'fetchList').and.returnValue(Promise.resolve(users));
+    // when
+    const vm = new UserViewModel(state);
+    // then
+    setTimeout(() => {
+      expect(vm).toBeInstanceOf(ViewModel);
+      expect(vm.select.element).toBeInstanceOf(HTMLSelectElement);
+      expect(vm.state).toBe(state);
+      expect(vm.model.userList.length).toBe(users.length);
+      expect(userEl.value).toBe(user1.listValue);
+      expect(userEl.options.length).toBe(users.length + 1);
+      expect(userEl.options[1].selected).toBe(true);
+      expect(userEl.options[1].value).toBe(user1.listValue);
+      done();
+    }, 100);
+  });
+
+  it('should create instance with state as parameter and load user list and select authorized user on list', (done) => {
+    // given
+    spyOn(uUser, 'fetchList').and.returnValue(Promise.resolve(users));
+    // when
+    auth.user = user2;
+    const vm = new UserViewModel(state);
+    // then
+    setTimeout(() => {
+      expect(vm).toBeInstanceOf(ViewModel);
+      expect(vm.select.element).toBeInstanceOf(HTMLSelectElement);
+      expect(vm.state).toBe(state);
+      expect(vm.model.userList.length).toBe(users.length);
+      expect(userEl.value).toBe(user2.listValue);
+      expect(userEl.options.length).toBe(users.length + 1);
+      expect(userEl.options[2].selected).toBe(true);
+      expect(userEl.options[2].value).toBe(user2.listValue);
+      done();
+    }, 100);
+  });
+
+  it('should change current user on user list option selected', (done) => {
+    // given
+    spyOn(UserViewModel.prototype, 'init');
+    const vm = new UserViewModel(state);
+    uObserve.setSilently(state, 'currentUser', user1);
+    uObserve.setSilently(vm.model, 'userList', users);
+    uObserve.setSilently(vm.model, 'currentUserId', user1.listValue);
+    const options = '<option selected value="1">user1</option><option value="2">user2</option>';
+    userEl.insertAdjacentHTML('beforeend', options);
+    const optLength = userEl.options.length;
+    vm.bindAll();
+    // when
+    userEl.value = user2.listValue;
+    userEl.dispatchEvent(new Event('change'));
+    // then
+    setTimeout(() => {
+      expect(state.currentUser).toBe(user2);
+      expect(userEl.options.length).toBe(optLength);
+      expect(userEl.value).toBe(user2.listValue);
+      expect(userEl.options[2].selected).toBe(true);
+      expect(userEl.options[2].value).toBe(user2.listValue);
+      done();
+    }, 100);
+  });
+
+  it('should set showAllUsers state on "all users" option selected', (done) => {
+    // given
+    spyOn(UserViewModel.prototype, 'init');
+    const vm = new UserViewModel(state);
+    uObserve.setSilently(state, 'currentUser', user1);
+    uObserve.setSilently(state, 'showAllUsers', false);
+    uObserve.setSilently(vm.model, 'userList', users);
+    uObserve.setSilently(vm.model, 'currentUserId', user1.listValue);
+    const options = `<option value="${uSelect.allValue}">all users</option><option selected value="1">user1</option><option value="2">user2</option>`;
+    userEl.insertAdjacentHTML('beforeend', options);
+    const optLength = userEl.options.length;
+    vm.bindAll();
+    // when
+    userEl.value = uSelect.allValue;
+    userEl.dispatchEvent(new Event('change'));
+    // then
+    setTimeout(() => {
+      expect(state.showAllUsers).toBe(true);
+      expect(state.currentUser).toBe(null);
+      expect(userEl.value).toBe(uSelect.allValue);
+      expect(userEl.options.length).toBe(optLength);
+      expect(userEl.options[1].selected).toBe(true);
+      expect(userEl.options[1].value).toBe(uSelect.allValue);
+      done();
+    }, 100);
+  });
+
+  it('should add "all users" option when "showLatest" state is set', (done) => {
+    // given
+    spyOn(UserViewModel.prototype, 'init');
+    const vm = new UserViewModel(state);
+    uObserve.setSilently(state, 'currentUser', user1);
+    uObserve.setSilently(state, 'showAllUsers', false);
+    uObserve.setSilently(vm.model, 'userList', users);
+    uObserve.setSilently(vm.model, 'currentUserId', user1.listValue);
+    const options = '<option selected value="1">user1</option><option value="2">user2</option>';
+    userEl.insertAdjacentHTML('beforeend', options);
+    const optLength = userEl.options.length;
+    const listLength = vm.model.userList.length;
+    vm.bindAll();
+    // when
+    state.showLatest = true;
+    // then
+    setTimeout(() => {
+      expect(state.showAllUsers).toBe(false);
+      expect(state.currentUser).toBe(user1);
+      expect(vm.select.hasAllOption).toBe(true);
+      expect(userEl.value).toBe(user1.listValue);
+      expect(userEl.options.length).toBe(optLength + 1);
+      expect(vm.model.userList.length).toBe(listLength);
+      expect(userEl.options[1].selected).toBe(false);
+      expect(userEl.options[1].value).toBe(uSelect.allValue);
+      expect(userEl.options[2].selected).toBe(true);
+      expect(userEl.options[2].value).toBe(user1.listValue);
+      done();
+    }, 100);
+  });
+
+  it('should remove "all users" option when "showLatest" state is unset', (done) => {
+    // given
+    spyOn(UserViewModel.prototype, 'init');
+    const vm = new UserViewModel(state);
+    uObserve.setSilently(state, 'currentUser', user1);
+    uObserve.setSilently(state, 'showAllUsers', false);
+    uObserve.setSilently(state, 'showLatest', true);
+    uObserve.setSilently(vm.model, 'userList', users);
+    uObserve.setSilently(vm.model, 'currentUserId', user1.listValue);
+    const options = `<option value="${uSelect.allValue}">all users</option><option selected value="1">user1</option><option value="2">user2</option>`;
+    userEl.insertAdjacentHTML('beforeend', options);
+    const optLength = userEl.options.length;
+    const listLength = vm.model.userList.length;
+    vm.bindAll();
+    // when
+    state.showLatest = false;
+    // then
+    setTimeout(() => {
+      expect(state.showAllUsers).toBe(false);
+      expect(state.currentUser).toBe(user1);
+      expect(vm.select.hasAllOption).toBe(false);
+      expect(userEl.value).toBe(user1.listValue);
+      expect(userEl.options.length).toBe(optLength - 1);
+      expect(vm.model.userList.length).toBe(listLength);
+      expect(userEl.options[1].selected).toBe(true);
+      expect(userEl.options[1].value).toBe(user1.listValue);
+      done();
+    }, 100);
+  });
+
+});