diff --git a/src/osmo_ms_driver/starter.py b/src/osmo_ms_driver/starter.py
new file mode 100644
index 0000000..243dedc
--- /dev/null
+++ b/src/osmo_ms_driver/starter.py
@@ -0,0 +1,119 @@
+# osmo_ms_driver: Starter for processes
+# Help to start processes over time.
+#
+# Copyright (C) 2018 by Holger Hans Peter Freyther
+#
+# This program 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/>.
+
+from osmo_gsm_tester import log, template
+
+import os
+import os.path
+import subprocess
+import time
+
+_devnull = open(os.devnull, 'w')
+#_devnull = open('/dev/stdout', 'w')
+
+class Launcher(log.Origin):
+    def __init__(self, base_name, name_number, tmp_dir):
+        super().__init__(log.C_RUN, "{}/{}".format(base_name, name_number))
+        self._name_number = name_number
+        self._tmp_dir = tmp_dir
+
+    def name_number(self):
+        return self._name_number
+
+class OsmoVirtPhy(Launcher):
+    def __init__(self, name_number, tmp_dir):
+        super().__init__("osmo-ms-virt-phy", name_number, tmp_dir)
+        self._phy_filename = os.path.join(self._tmp_dir, "osmocom_l2_" + self._name_number)
+
+    def phy_filename(self):
+        return self._phy_filename
+
+    def start(self, loop):
+        if len(self._phy_filename.encode()) > 107:
+            raise log.Error('Path for unix socket is longer than max allowed len for unix socket path (107):', self._phy_filename)
+
+        self.log("Starting virtphy process")
+        args = ["virtphy", "--l1ctl-sock=" + self._phy_filename]
+        self.log(' '.join(args))
+        self._vphy_proc = subprocess.Popen(args, stderr=_devnull, stdout=_devnull)
+
+    def verify_ready(self):
+        while True:
+            if os.path.exists(self._phy_filename):
+                return
+            time.sleep(0.2)
+
+    def kill(self):
+        """Clean up things."""
+        if self._vphy_proc:
+            self._vphy_proc.kill()
+
+class OsmoMobile(Launcher):
+    def __init__(self, name_number, tmp_dir, lua_tmpl, cfg_tmpl, imsi_ki_generator, phy_filename, ev_server_path):
+        super().__init__("osmo-ms-mob", name_number, tmp_dir)
+        self._lua_template = lua_tmpl
+        self._cfg_template = cfg_tmpl
+        self._imsi_ki_generator = imsi_ki_generator
+        self._phy_filename = phy_filename
+        self._ev_server_path = ev_server_path
+
+    def write_lua_cfg(self):
+        lua_support = os.path.join(os.path.dirname(__file__), 'lua')
+        cfg = {
+            'test': {
+                'event_path': self._ev_server_path,
+                'lua_support': lua_support,
+            }
+        }
+        lua_cfg_file = os.path.join(self._tmp_dir, "lua_" + self._name_number + ".lua")
+        lua_script = template.render(self._lua_template, cfg)
+        with open(lua_cfg_file, 'w') as w:
+            w.write(lua_script)
+        return lua_cfg_file
+
+    def write_mob_cfg(self, lua_filename, phy_filename):
+        (imsi, ki) = next(self._imsi_ki_generator)
+        cfg = {
+            'test': {
+                'script': lua_filename,
+                'virt_phy': phy_filename,
+                'imsi': imsi,
+                'ki_comp128': ki,
+                'ms_number': self._name_number,
+            }
+        }
+        mob_cfg_file = os.path.join(self._tmp_dir, "mob_" + self._name_number + ".cfg")
+        mob_vty = template.render(self._cfg_template, cfg)
+        with open(mob_cfg_file, 'w') as w:
+            w.write(mob_vty)
+        return mob_cfg_file
+
+    def start(self, loop):
+        lua_filename = self.write_lua_cfg()
+        mob_filename = self.write_mob_cfg(lua_filename, self._phy_filename)
+
+        self.log("Starting process")
+        # Let the kernel pick an unused port for the VTY.
+        args = ["mobile", "-c", mob_filename, "--vty-port=0"]
+        self.log(' '.join(args))
+        self._omob_proc = subprocess.Popen(args, stderr=_devnull, stdout=_devnull)
+
+    def kill(self):
+        """Clean up things."""
+        if self._omob_proc:
+            self._omob_proc.kill()