diff --git a/CHANGELOG b/CHANGELOG
index c93645bb21..74a5486766 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,4 @@
+* Handle URL
 * Add communication between boards
 * Added domain inversion feature
 * Handle loading attribute on fields
diff --git a/doc/usage.rst b/doc/usage.rst
index 8129b9331a..0212d10414 100644
--- a/doc/usage.rst
+++ b/doc/usage.rst
@@ -17,7 +17,7 @@ Synopsis
 
 ::
 
-  tryton [options]
+  tryton [options] [url]
 
 After startup, there raises the `login dialog`__ and optionally a
 `tips dialog`__.
@@ -48,6 +48,30 @@ Options
 
 -s SERVER, --server=SERVER           Specify the server hostname
 
+URL
+***
+
+When an url is passed, the client will try to find already running client that
+could handle it and send to this one to open the url. If it doesn't find one
+then it will start the GUI and open the url itself.
+
+The url schemes are:
+
+    `tryton://<hostname>[:<port>]/<database>/model/<model name>[/<id>][;parameters]`
+
+    `tryton://<hostname>[:<port>]/<database>/wizard/<wizard name>[;parameters]`
+
+    `tryton://<hostname>[:<port>]/<database>/report/<report name>[;parameters]`
+
+
+where `parameters` are the corresponding fields of actions encoded in
+`JSON`_.
+
+.. _JSON: http://en.wikipedia.org/wiki/Json
+.. Note:: `model` is for `act_window`
+.. Note:: `report` must have at least a data parameter with `ids`, `id` and
+    `model name`
+
 
 Overview
 ********
diff --git a/setup.nsi b/setup.nsi
index 3920e70c0b..17e05c59fe 100644
--- a/setup.nsi
+++ b/setup.nsi
@@ -98,6 +98,12 @@ SectionIn 1 2 RO
     SetOutPath "$INSTDIR\doc"
     File /r "doc\*"
 
+    ;Register URL protocol
+    WriteRegStr HKCR "tryton" "" "URL:Tryton Protocol"
+    WriteRegStr HKCR "tryton" "URL Protocol" ""
+    WriteRegStr HKCR "tryton\DefaultIcon" "" "$INSTDIR\tryton.exe,1"
+    WriteRegStr HKCR "tryton\shell\open\command" "" '$INSTDIR\tryton.exe "%1"'
+
     ;Write the installation path into the registry
     WriteRegStr HKCU "Software\tryton-${VERSION}" "" $INSTDIR
     WriteRegStr HKLM "Software\tryton-${VERSION}" "" $INSTDIR
diff --git a/tryton/client.py b/tryton/client.py
index 47d2ea7c23..338f25bab3 100644
--- a/tryton/client.py
+++ b/tryton/client.py
@@ -12,6 +12,7 @@ if not (os.name in ('nt', 'mac') or \
         (hasattr(os, 'uname') and os.uname()[0] == 'Darwin')):
     gtk.gdk.threads_init()
 import logging
+from urlparse import urlparse
 
 from tryton import version
 from tryton import config
@@ -19,6 +20,7 @@ from tryton.config import CONFIG, CURRENT_DIR, PREFIX, PIXMAPS_DIR, \
         TRYTON_ICON, get_config_dir
 from tryton import translate
 from tryton import gui
+from tryton.ipc import Client as IPCClient
 import traceback
 import time
 import signal
@@ -29,6 +31,19 @@ class TrytonClient(object):
 
     def __init__(self):
         CONFIG.parse()
+        if CONFIG.arguments:
+            url, = CONFIG.arguments
+            urlp = urlparse(url)
+            if urlp.scheme == 'tryton':
+                urlp = urlparse('http' + url[6:])
+                hostname, port = (urlp.netloc.split(':', 1)
+                        + [CONFIG.defaults['login.port']])[:2]
+                database, _ = (urlp.path[1:].split('/', 1) + [None])[:2]
+                if IPCClient(hostname, port, database).write(url):
+                    sys.exit(0)
+                CONFIG['login.server'] = hostname
+                CONFIG['login.port'] = port
+                CONFIG['login.db'] = database
         logging.basicConfig()
         translate.set_language_direction(CONFIG['client.language_direction'])
         translate.setlang(CONFIG['client.lang'])
diff --git a/tryton/config.py b/tryton/config.py
index 06c054a3be..92ee696b30 100644
--- a/tryton/config.py
+++ b/tryton/config.py
@@ -90,9 +90,11 @@ class ConfigManager(object):
         self.options = {
             'login.host': True
         }
+        self.arguments = []
 
     def parse(self):
-        parser = optparse.OptionParser(version=("Tryton %s" % VERSION))
+        parser = optparse.OptionParser(version=("Tryton %s" % VERSION),
+                usage="Usage: %prog [options] [url]")
         parser.add_option("-c", "--config", dest="config",
                 help=_("specify alternate config file"))
         parser.add_option("-v", "--verbose", action="store_true",
@@ -109,8 +111,10 @@ class ConfigManager(object):
                 help=_("specify the server port"))
         parser.add_option("-s", "--server", dest="server",
                 help=_("specify the server hostname"))
-        opt = parser.parse_args()[0]
+        opt, self.arguments = parser.parse_args()
 
+        if len(self.arguments) > 1:
+            raise Exception(_('Too much arguments'))
 
         if opt.config and not os.path.isfile(opt.config):
             raise Exception(_('File "%s" not found') % (opt.config,))
diff --git a/tryton/gui/main.py b/tryton/gui/main.py
index 5f7537d9d1..a659de626f 100644
--- a/tryton/gui/main.py
+++ b/tryton/gui/main.py
@@ -3,14 +3,21 @@
 import os
 import sys
 import gettext
-import urlparse
+from urlparse import urlparse
+import urllib
 import gobject
 import gtk
+if sys.version_info < (2, 6):
+    import simplejson as json
+else:
+    import json
+import webbrowser
 import tryton.rpc as rpc
 from tryton.config import CONFIG, TRYTON_ICON, PIXMAPS_DIR, DATA_DIR, \
         get_config_dir
 import tryton.common as common
 from tryton.action import Action
+from tryton.wizard import Wizard
 from tryton.gui.window import Window
 from tryton.gui.window.preference import Preference
 from tryton.gui.window import Limit
@@ -1186,6 +1193,9 @@ class Main(object):
         self.menuitem_form.set_sensitive(True)
         self.menuitem_plugins.set_sensitive(True)
         self.notebook.grab_focus()
+        if CONFIG.arguments:
+            url = CONFIG.arguments.pop()
+            self.open_url(url)
         return True
 
     def sig_logout(self, widget, disconnect=True):
@@ -1616,3 +1626,121 @@ class Main(object):
         else:
             rpc.logout()
             Main.get_main().refresh_ssl()
+
+    def _open_url(self, url):
+        url = urllib.unquote(url)
+        urlp = urlparse(url)
+        if not urlp.scheme == 'tryton':
+            return
+        urlp = urlparse('http' + url[6:])
+        hostname, port = (urlp.netloc.split(':', 1)
+                + [CONFIG.defaults['login.port']])[:2]
+        database, path = (urlp.path[1:].split('/', 1) + [None])[:2]
+        if (not path or
+                hostname != rpc._SOCK.hostname or
+                int(port) != rpc._SOCK.port or
+                database != rpc._DATABASE):
+            return
+        type_, path = (path.split('/', 1) + [''])[:2]
+        params = {}
+        if urlp.params:
+            try:
+                params = dict(param.split('=', 1)
+                        for param in urlp.params.split('&'))
+            except Exception:
+                return
+
+        def open_model(path):
+            model, path = (path.split('/', 1) + [''])[:2]
+            if not model:
+                return
+            res_id = False
+            mode = None
+            view_type = params.get('view_type', 'form')
+            try:
+                view_ids = json.loads(params.get('views', 'false'))
+                limit = json.loads(params.get('limit', 'null'))
+                auto_refresh = json.loads(params.get('auto_refresh', 'false'))
+                name = json.loads(params.get('window_name', 'false'))
+                search_value = json.loads(params.get('search_value', '{}'))
+                domain = json.loads(params.get('domain', '[]'))
+                context = json.loads(params.get('context', '{}'))
+            except ValueError:
+                return
+            if path:
+                try:
+                    res_id = int(path)
+                except ValueError:
+                    return
+                mode = ['form', 'tree']
+            try:
+                Window.create(view_ids, model, res_id=res_id, domain=domain,
+                        view_type=view_type, window=self.window,
+                        context=context, mode=mode, name=name, limit=limit,
+                        auto_refresh=auto_refresh, search_value=search_value)
+            except Exception:
+                return
+
+        def open_wizard(wizard):
+            if not wizard:
+                return
+            try:
+                data = json.loads(params.get('data', '{}'))
+                direct_print = json.loads(params.get('direct_print', 'false'))
+                email_print = json.loads(params.get('email_print', 'false'))
+                email = json.loads(params.get('email', 'null'))
+                name = json.loads(params.get('name', 'false'))
+                window = json.loads(params.get('window', 'false'))
+                context = json.loads(params.get('context', '{}'))
+            except ValueError:
+                return
+            try:
+                if window:
+                    Window.create_wizard(wizard, data, self.window,
+                            direct_print=direct_print, email_print=email_print,
+                            email=email, name=name, context=context)
+                else:
+                    Wizard.execute(wizard, data, self.window,
+                            direct_print=direct_print, email_print=email_print,
+                            email=email, context=context)
+            except Exception:
+                return
+
+        def open_report(report):
+            if not report:
+                return
+            try:
+                data = json.loads(params.get('data'))
+                direct_print = json.loads(params.get('direct_print', 'false'))
+                email_print = json.loads(params.get('email_print', 'false'))
+                email = json.loads(params.get('email', 'null'))
+                name = json.loads(params.get('name', 'false'))
+                context = json.loads(params.get('context', '{}'))
+            except ValueError:
+                return
+            try:
+                Action.exec_report(report, data, self.window,
+                        direct_print=direct_print, email_print=email_print,
+                        email=email, context=context)
+            except Exception:
+                return
+
+        def open_url():
+            try:
+                url = json.loads(params.get('url', 'false'))
+            except ValueError:
+                return
+            if url:
+                webbrowser.open(url, new=2)
+
+        if type_ == 'model':
+            open_model(path)
+        elif type_ == 'wizard':
+            open_wizard(path)
+        elif type_ == 'report':
+            open_report(path)
+        elif type_ == 'url':
+            open_url()
+
+    def open_url(self, url):
+        gobject.idle_add(self._open_url, url)
diff --git a/tryton/ipc.py b/tryton/ipc.py
new file mode 100644
index 0000000000..85d0cae441
--- /dev/null
+++ b/tryton/ipc.py
@@ -0,0 +1,178 @@
+#This file is part of Tryton.  The COPYRIGHT file at the top level of
+#this repository contains the full copyright notices and license terms.
+"""
+Inter-Process Communication
+"""
+import tempfile
+import os
+import threading
+import select
+import time
+from tryton.config import get_config_dir
+
+__all__ = ['Server', 'Client']
+
+class IPCServer(object):
+
+    thread = None
+    running = None
+    instance = None
+
+    def __init__(self, hostname, port, database):
+        self.hostname = hostname
+        self.port = port
+        self.database = database
+        self.config = os.path.join(get_config_dir(), '%s@%s@%s' %
+                (self.hostname, self.port, self.database))
+        self.tmpdir = tempfile.mkdtemp(prefix='.tryton')
+        Server.instance = self
+
+    def setup(self):
+        raise NotImplemented
+
+    def run(self):
+        self.setup()
+        self.running = True
+        self.thread = threading.Thread(target=self._read)
+        self.thread.start()
+
+    def clean(self):
+        raise NotImplemented
+
+    def stop(self):
+        self.running = False
+        self.thread.join()
+        self.thread = None
+        self.clean()
+        Server.instance = None
+
+    def _read(self):
+        raise NotImplemented
+
+
+class FileServer(IPCServer):
+
+    def setup(self):
+        config = open(self.config, 'w')
+        print >> config, self.tmpdir
+
+    def clean(self):
+        try:
+            os.remove(self.config)
+            os.rmdir(self.tmpdir)
+        except OSError:
+            pass
+
+    def _read(self):
+        to_remove = set()
+        while self.running:
+            for filename in os.listdir(self.tmpdir):
+                path = os.path.join(self.tmpdir, filename)
+                if not os.path.isfile(path):
+                    continue
+                if path in to_remove:
+                    continue
+                try:
+                    data = open(path, 'r').readline()
+                except IOError:
+                    pass
+                if data and data[-1] != '\n':
+                    continue
+                to_remove.add(path)
+                if data:
+                    from tryton.gui.main import Main
+                    Main.get_main().open_url(data[:-1])
+            if not os.path.exists(self.config):
+                self.setup()
+            for path in to_remove.copy():
+                try:
+                    os.remove(path)
+                except Exception:
+                    continue
+                to_remove.remove(path)
+            time.sleep(1)
+
+
+class FIFOServer(IPCServer):
+
+    def setup(self):
+        self.filename = os.path.join(self.tmpdir, 'Socket')
+        os.mkfifo(self.filename, 0600)
+        if os.path.lexists(self.config):
+            os.remove(self.config)
+        os.symlink(self.filename, self.config)
+
+    def clean(self):
+        try:
+            os.remove(self.config)
+            os.rmdir(self.tmpdir)
+        except OSError:
+            pass
+
+    def _read(self):
+        fifo = os.fdopen(os.open(self.filename, os.O_RDONLY|os.O_NONBLOCK))
+        data = ''
+        while self.running:
+            rlist, _, _ = select.select([fifo], [], [], 1)
+            if rlist:
+                try:
+                    data += fifo.readline()
+                except IOError:
+                    pass
+                if data and data[-1] != '\n':
+                    continue
+                if data:
+                    from tryton.gui.main import Main
+                    Main.get_main().open_url(data.strip())
+                data = ''
+            if not os.path.lexists(self.config):
+                os.symlink(self.filename, self.config)
+
+
+class IPCClient(object):
+
+    def __init__(self, hostname, port, database):
+        self.hostname = hostname
+        self.port = port
+        self.database = database
+        self.filename = os.path.join(get_config_dir(),
+                '%s@%s@%s' % (hostname, port, database))
+
+    def write(self, message):
+        raise NotImplemented
+
+
+class FileClient(IPCClient):
+
+    def __init__(self, hostname, port, database):
+        super(FileClient, self).__init__(hostname, port, database)
+
+    def write(self, message):
+        if not os.path.exists(self.filename):
+            return False
+        tmpdir = open(self.filename, 'r').readline().strip()
+        _, tmpfile = tempfile.mkstemp(dir=tmpdir, text=True)
+        tmpfile = open(tmpfile, 'w')
+        print >> tmpfile, message
+        tmpfile.close()
+        return True
+
+
+class FIFOClient(IPCClient):
+
+    def __init__(self, hostname, port, database):
+        super(FIFOClient, self).__init__(hostname, port, database)
+
+    def write(self, message):
+        if not os.path.lexists(self.filename):
+            return False
+        fifo = open(self.filename, 'w')
+        print >> fifo, message
+        return True
+
+if hasattr(os, 'mkfifo'):
+    Server = FIFOServer
+    Client = FIFOClient
+else:
+    Server = FileServer
+    Client = FileClient
diff --git a/tryton/rpc.py b/tryton/rpc.py
index 892222c695..7e14218a61 100644
--- a/tryton/rpc.py
+++ b/tryton/rpc.py
@@ -7,6 +7,7 @@ import os
 from threading import Semaphore
 from tryton.fingerprints import Fingerprints
 from tryton.config import get_config_dir
+from tryton.ipc import Server as IPCServer
 
 _SOCK = None
 _USER = None
@@ -154,10 +155,13 @@ def login(username, password, host, port, database):
     _DATABASE = database
     SECURE = _SOCK.ssl
     context_reload()
+    IPCServer(host, port, database).run()
     return 1
 
 def logout():
     global _SOCK, _USER, _USERNAME, _SESSION, _DATABASE, _VIEW_CACHE, SECURE
+    if IPCServer.instance:
+        IPCServer.instance.stop()
     if _SOCK and _USER:
         try:
             _SEMAPHORE.acquire()