diff --git a/qutebrowser/app.py b/qutebrowser/app.py
index f00d71a78..8b7e6b927 100644
--- a/qutebrowser/app.py
+++ b/qutebrowser/app.py
@@ -57,6 +57,9 @@ from qutebrowser.utils.appdirs import AppDirs
 from qutebrowser.utils.misc import set_trace
 
 
+components = {}
+
+
 class QuteBrowser(QApplication):
 
     """Main object for qutebrowser.
@@ -130,6 +133,8 @@ class QuteBrowser(QApplication):
         self.keyparser.keystring_updated.connect(
             self.mainwindow.status.keystring.setText)
 
+        components['app'] = self
+
         self.mainwindow.show()
         self._python_hacks()
         timer = QTimer.singleShot(0, self._process_init_args)
@@ -322,7 +327,7 @@ class QuteBrowser(QApplication):
             logging.debug("maybe_quit quitting.")
             self.quit()
 
-    @cmdutils.register(split_args=False)
+    @cmdutils.register(instance='app', split_args=False)
     def pyeval(self, s):
         """Evaluate a python string and display the results as a webpage.
 
@@ -340,7 +345,7 @@ class QuteBrowser(QApplication):
         qutescheme.pyeval_output = out
         self.mainwindow.tabs.cur.openurl('qute:pyeval')
 
-    @cmdutils.register(hide=True)
+    @cmdutils.register(instance='app', hide=True)
     def crash(self):
         """Crash for debugging purposes.
 
@@ -353,7 +358,7 @@ class QuteBrowser(QApplication):
         raise Exception("Forced crash")
 
     @pyqtSlot()
-    @cmdutils.register(name=['q', 'quit'], nargs=0)
+    @cmdutils.register(instance='app', name=['q', 'quit'], nargs=0)
     def shutdown(self, do_quit=True):
         """Try to shutdown everything cleanly.
 
diff --git a/qutebrowser/commands/utils.py b/qutebrowser/commands/utils.py
index 6d01d39a8..afde5bc1e 100644
--- a/qutebrowser/commands/utils.py
+++ b/qutebrowser/commands/utils.py
@@ -19,11 +19,14 @@
 
 import shlex
 import inspect
+import functools
 
 from PyQt5.QtCore import pyqtSlot, pyqtSignal, QObject
+from PyQt5.QtWidgets import QApplication
 from PyQt5.QtWebKitWidgets import QWebPage
 
 import qutebrowser.config.config as config
+from qutebrowser.app import components as qtb_components
 from qutebrowser.commands.template import Command
 from qutebrowser.commands.exceptions import (ArgumentCountError,
                                              NoSuchCommandError)
@@ -40,11 +43,13 @@ class register:
 
     """
 
-    def __init__(self, name=None, nargs=None, split_args=True, hide=False):
+    def __init__(self, instance=None, name=None, nargs=None, split_args=True,
+                 hide=False):
         self.name = name
         self.split_args = split_args
         self.hide = hide
         self.nargs = nargs
+        self.instance = instance
 
     def __call__(self, func):
         global cmd_dict
@@ -58,8 +63,12 @@ class register:
             names += name
         count, nargs = self._get_nargs_count(func)
         desc = func.__doc__.splitlines()[0].strip().rstrip('.')
+        if self.instance is not None:
+            handler = functools.partial(func, qtb_components[self.instance])
+        else:
+            handler = func
         cmd = Command(mainname, self.split_args, self.hide, nargs, count, desc,
-                      handler=func)
+                      handler=handler)
         for name in names:
             cmd_dict[name] = cmd
         return func
@@ -130,6 +139,7 @@ class SearchParser(QObject):
         self._text = None
         self._flags = 0
         super().__init__(parent)
+        qtb_components['searchparser'] = self
 
     def _search(self, text, rev=False):
         """Search for a text on the current page.
@@ -174,7 +184,7 @@ class SearchParser(QObject):
         """
         self._search(text, rev=True)
 
-    @register(hide=True)
+    @register(instance='searchparser', hide=True)
     def nextsearch(self, count=1):
         """Continue the search to the ([count]th) next term.
 
diff --git a/qutebrowser/widgets/browser.py b/qutebrowser/widgets/browser.py
index 2128c4e97..af14d2bae 100644
--- a/qutebrowser/widgets/browser.py
+++ b/qutebrowser/widgets/browser.py
@@ -37,6 +37,7 @@ from PyQt5.QtWebKitWidgets import QWebView, QWebPage
 import qutebrowser.utils.url as urlutils
 import qutebrowser.config.config as config
 import qutebrowser.commands.utils as cmdutils
+from qutebrowser.app import components as qtb_components
 from qutebrowser.widgets.tabbar import TabWidget
 from qutebrowser.network.networkmanager import NetworkManager
 from qutebrowser.utils.signals import SignalCache, dbg_signal
@@ -114,6 +115,7 @@ class TabbedBrowser(TabWidget):
         self._space.activated.connect(lambda: self.cur.scroll_page(0, 1))
         self.cur = CurCommandDispatcher(self)
         self.cur.temp_message.connect(self.cur_temp_message)
+        qtb_components['browser'] = self
 
     def _cb_tab_shutdown(self, tab):
         """Called after a tab has been shut down completely.
@@ -247,7 +249,7 @@ class TabbedBrowser(TabWidget):
             tab.shutdown(callback=functools.partial(self._cb_tab_shutdown,
                                                     tab))
 
-    @cmdutils.register()
+    @cmdutils.register(instance='browser')
     def tabclose(self, count=None):
         """Close the current/[count]th tab.
 
@@ -277,7 +279,7 @@ class TabbedBrowser(TabWidget):
         elif last_close == 'blank':
             tab.openurl('about:blank')
 
-    @cmdutils.register(split_args=False)
+    @cmdutils.register(instance='browser', split_args=False)
     def tabopen(self, url):
         """Open a new tab with a given url.
 
@@ -311,7 +313,7 @@ class TabbedBrowser(TabWidget):
         tab.open_tab.connect(self.tabopen)
         tab.openurl(url)
 
-    @cmdutils.register(hide=True)
+    @cmdutils.register(instance='browser', hide=True)
     def tabopencur(self):
         """Set the statusbar to :tabopen and the current URL.
 
@@ -322,7 +324,7 @@ class TabbedBrowser(TabWidget):
         url = urlutils.urlstring(self.currentWidget().url())
         self.set_cmd_text.emit(':tabopen ' + url)
 
-    @cmdutils.register(hide=True)
+    @cmdutils.register(instance='browser', hide=True)
     def opencur(self):
         """Set the statusbar to :open and the current URL.
 
@@ -333,7 +335,7 @@ class TabbedBrowser(TabWidget):
         url = urlutils.urlstring(self.currentWidget().url())
         self.set_cmd_text.emit(':open ' + url)
 
-    @cmdutils.register(name='undo')
+    @cmdutils.register(instance='browser', name='undo')
     def undo_close(self):
         """Switch to the previous tab, or skip [count] tabs.
 
@@ -343,7 +345,7 @@ class TabbedBrowser(TabWidget):
         if self._url_stack:
             self.tabopen(self._url_stack.pop())
 
-    @cmdutils.register(name='tabprev')
+    @cmdutils.register(instance='browser', name='tabprev')
     def switch_prev(self, count=1):
         """Switch to the ([count]th) previous tab.
 
@@ -360,7 +362,7 @@ class TabbedBrowser(TabWidget):
             # FIXME
             pass
 
-    @cmdutils.register('tabnext')
+    @cmdutils.register(instance='browser', name='tabnext')
     def switch_next(self, count=1):
         """Switch to the next tab, or skip [count] tabs.
 
@@ -377,7 +379,7 @@ class TabbedBrowser(TabWidget):
             # FIXME
             pass
 
-    @cmdutils.register()
+    @cmdutils.register(instance='browser')
     def paste(self, sel=False):
         """Open a page from the clipboard.
 
@@ -394,7 +396,7 @@ class TabbedBrowser(TabWidget):
         logging.debug("Clipboard contained: '{}'".format(url))
         self.openurl(url)
 
-    @cmdutils.register()
+    @cmdutils.register(instance='browser')
     def tabpaste(self, sel=False):
         """Open a page from the clipboard in a new tab.
 
@@ -489,7 +491,7 @@ class CurCommandDispatcher(QObject):
             return
         frame.setScrollBarValue(orientation, int(m * perc / 100))
 
-    @cmdutils.register(name='open', split_args=False)
+    @cmdutils.register(instance='browser', name='open', split_args=False)
     def openurl(self, url, count=None):
         """Open an url in the current/[count]th tab.
 
@@ -512,7 +514,7 @@ class CurCommandDispatcher(QObject):
         else:
             tab.openurl(url)
 
-    @cmdutils.register(name='reload')
+    @cmdutils.register(instance='browser', name='reload')
     def reloadpage(self, count=None):
         """Reload the current/[count]th tab.
 
@@ -526,7 +528,7 @@ class CurCommandDispatcher(QObject):
         if tab is not None:
             tab.reload()
 
-    @cmdutils.register()
+    @cmdutils.register(instance='browser')
     def stop(self, count=None):
         """Stop loading in the current/[count]th tab.
 
@@ -540,7 +542,7 @@ class CurCommandDispatcher(QObject):
         if tab is not None:
             tab.stop()
 
-    @cmdutils.register(name='print')
+    @cmdutils.register(instance='browser', name='print')
     def printpage(self, count=None):
         """Print the current/[count]th tab.
 
@@ -557,7 +559,7 @@ class CurCommandDispatcher(QObject):
             preview.paintRequested.connect(tab.print)
             preview.exec_()
 
-    @cmdutils.register()
+    @cmdutils.register(instance='browser')
     def back(self, count=1):
         """Go back in the history of the current tab.
 
@@ -571,7 +573,7 @@ class CurCommandDispatcher(QObject):
         for i in range(count):  # pylint: disable=unused-variable
             self.tabs.currentWidget().back()
 
-    @cmdutils.register()
+    @cmdutils.register(instance='browser')
     def forward(self, count=1):
         """Go forward in the history of the current tab.
 
@@ -596,7 +598,7 @@ class CurCommandDispatcher(QObject):
         """
         self.tabs.currentWidget().findText(text, flags)
 
-    @cmdutils.register(hide=True)
+    @cmdutils.register(instance='browser', hide=True)
     def scroll(self, dx, dy, count=1):
         """Scroll the current tab by count * dx/dy.
 
@@ -612,7 +614,7 @@ class CurCommandDispatcher(QObject):
         dy = int(count) * float(dy)
         self.tabs.currentWidget().page_.mainFrame().scroll(dx, dy)
 
-    @cmdutils.register(name='scroll_perc_x', hide=True)
+    @cmdutils.register(instance='browser', name='scroll_perc_x', hide=True)
     def scroll_percent_x(self, perc=None, count=None):
         """Scroll the current tab to a specific percent of the page (horiz).
 
@@ -625,7 +627,7 @@ class CurCommandDispatcher(QObject):
         """
         self._scroll_percent(perc, count, Qt.Horizontal)
 
-    @cmdutils.register(name='scroll_perc_y', hide=True)
+    @cmdutils.register(instance='browser', name='scroll_perc_y', hide=True)
     def scroll_percent_y(self, perc=None, count=None):
         """Scroll the current tab to a specific percent of the page (vert).
 
@@ -638,7 +640,7 @@ class CurCommandDispatcher(QObject):
         """
         self._scroll_percent(perc, count, Qt.Vertical)
 
-    @cmdutils.register(hide=True)
+    @cmdutils.register(instance='browser', hide=True)
     def scroll_page(self, mx, my, count=1):
         """Scroll the frame page-wise.
 
@@ -654,7 +656,7 @@ class CurCommandDispatcher(QObject):
         page.mainFrame().scroll(int(count) * float(mx) * size.width(),
                                 int(count) * float(my) * size.height())
 
-    @cmdutils.register()
+    @cmdutils.register(instance='browser')
     def yank(self, sel=False):
         """Yank the current url to the clipboard or primary selection.
 
@@ -674,7 +676,7 @@ class CurCommandDispatcher(QObject):
         self.temp_message.emit('URL yanked to {}'.format(
             'primary selection' if sel else 'clipboard'))
 
-    @cmdutils.register(name='yanktitle')
+    @cmdutils.register(instance='browser', name='yanktitle')
     def yank_title(self, sel=False):
         """Yank the current title to the clipboard or primary selection.
 
@@ -694,7 +696,7 @@ class CurCommandDispatcher(QObject):
         self.temp_message.emit('Title yanked to {}'.format(
             'primary selection' if sel else 'clipboard'))
 
-    @cmdutils.register(name='zoomin')
+    @cmdutils.register(instance='browser', name='zoomin')
     def zoom_in(self, count=1):
         """Zoom in in the current tab.
 
@@ -705,7 +707,7 @@ class CurCommandDispatcher(QObject):
         tab = self.tabs.currentWidget()
         tab.zoom(count)
 
-    @cmdutils.register(name='zoomout')
+    @cmdutils.register(instance='browser', name='zoomout')
     def zoom_out(self, count=1):
         """Zoom out in the current tab.