diff --git a/open-lst/tools/openlst_tools/bootload_radio.py b/open-lst/tools/openlst_tools/bootload_radio.py
index f86902c..a19b6d4 100644
--- a/open-lst/tools/openlst_tools/bootload_radio.py
+++ b/open-lst/tools/openlst_tools/bootload_radio.py
@@ -14,6 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+from builtins import range
 import os
 import argparse
 import logging
@@ -106,7 +107,7 @@ def main():
             pass
         time.sleep(1.5)
     # Load pages
-    for page in xrange(FLASH_APP_START, FLASH_APP_END + 1, FLASH_PAGE_SIZE):
+    for page in range(FLASH_APP_START, FLASH_APP_END + 1, FLASH_PAGE_SIZE):
         page_number = page // FLASH_PAGE_SIZE
         page_data = app_section[page:page + FLASH_PAGE_SIZE]
         if all(b == 0xff for b in page_data):
diff --git a/open-lst/tools/openlst_tools/commands.py b/open-lst/tools/openlst_tools/commands.py
index da7af4d..1f174c3 100644
--- a/open-lst/tools/openlst_tools/commands.py
+++ b/open-lst/tools/openlst_tools/commands.py
@@ -14,11 +14,13 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+from __future__ import print_function
+import six
 import abc
 import time
 import logging
 from threading import Thread, Lock
-from Queue import Queue, Empty
+from queue import Queue, Empty
 from .translator import Translator
 from .radio_mux import DEFAULT_RX_SOCKET, DEFAULT_TX_SOCKET
 
@@ -52,7 +54,7 @@ class CommandHandler(object):
     __metaclass__ = abc.ABCMeta
 
     def __init__(self, hwid):
-        if isinstance(hwid, basestring):
+        if isinstance(hwid, six.string_types):
             self.hwid = int(hwid, 16)
         else:
             self.hwid = hwid
@@ -238,7 +240,7 @@ def flush(self):
 
     def poll_message(self, timeout):
         msgs = dict(self.poller.poll(timeout * 1000))
-        for sock, msg in msgs.iteritems():
+        for sock, msg in six.iteritems(msgs):
             if sock == self.rx:
                 return self.rx.recv()
         return None
diff --git a/open-lst/tools/openlst_tools/get_telem.py b/open-lst/tools/openlst_tools/get_telem.py
index 6001049..bb80846 100644
--- a/open-lst/tools/openlst_tools/get_telem.py
+++ b/open-lst/tools/openlst_tools/get_telem.py
@@ -79,9 +79,9 @@ def main():
 
     con = get_handler(args.hwid, args.rx_path, args.tx_path)
     resp = con.send_cmd("lst get_telem")
-    print resp
+    print(resp)
     for field, val in zip(TELEM_FIELDS, resp.split()[2:]):
-        print field, val
+        print(field, val)
 
 if __name__ == '__main__':
     main()
diff --git a/open-lst/tools/openlst_tools/intel_hex.py b/open-lst/tools/openlst_tools/intel_hex.py
index 56c9be5..3342961 100644
--- a/open-lst/tools/openlst_tools/intel_hex.py
+++ b/open-lst/tools/openlst_tools/intel_hex.py
@@ -15,6 +15,7 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 from binascii import hexlify
+from builtins import range
 
 
 def parse_hex_file(hex_data, mem_size=0x8000):
@@ -28,7 +29,7 @@ def parse_hex_file(hex_data, mem_size=0x8000):
     It returns a 32KB bytearray with empty/unused bytes set to 0xFF
     (flash empty)
     """
-    outbuff = bytearray(0xff for _ in xrange(mem_size))
+    outbuff = bytearray(0xff for _ in range(mem_size))
     line_count = 0
     total_data = 0
     for line in hex_data.splitlines():
@@ -49,7 +50,7 @@ def parse_hex_file(hex_data, mem_size=0x8000):
         if record_type == 0:  # Data
             data = [
                 int(line[(9 + 2 * i):(9 + 2 * i + 2)], 16)
-                for i in xrange(byte_count)]
+                for i in range(byte_count)]
             checksum = int(
                 line[(9 + 2 * byte_count):(9 + 2 * byte_count + 2)],
                 16)
@@ -72,7 +73,7 @@ def parse_hex_file(hex_data, mem_size=0x8000):
 def dump_hex_file(data, line_size=32, skip_lines=True,
                   truncate_lines=False):
     lines = []
-    for addr in xrange(0, len(data), line_size):
+    for addr in range(0, len(data), line_size):
         line_data = data[addr:addr + line_size]
         if truncate_lines:
             line_data = line_data.rstrip('\xff')
diff --git a/open-lst/tools/openlst_tools/radio_cmd.py b/open-lst/tools/openlst_tools/radio_cmd.py
index faf22e4..47081c7 100644
--- a/open-lst/tools/openlst_tools/radio_cmd.py
+++ b/open-lst/tools/openlst_tools/radio_cmd.py
@@ -14,6 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+from __future__ import print_function
 import os
 import argparse
 import logging
@@ -48,7 +49,7 @@ def main():
 
     con = get_handler(args.hwid, args.rx_path, args.tx_path)
     resp = con.send_cmd(args.command)
-    print resp
+    print(resp)
 
 if __name__ == '__main__':
     main()
diff --git a/open-lst/tools/openlst_tools/radio_mux.py b/open-lst/tools/openlst_tools/radio_mux.py
index 06af078..5613d9f 100644
--- a/open-lst/tools/openlst_tools/radio_mux.py
+++ b/open-lst/tools/openlst_tools/radio_mux.py
@@ -14,6 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+from __future__ import print_function
 import argparse
 import pwd
 import grp
@@ -24,7 +25,7 @@
 import zmq
 from binascii import hexlify
 from threading import Thread, Event, Lock
-from Queue import Queue
+from queue import Queue
 
 ESP_START_BYTE_0 = '\x22'
 ESP_START_BYTE_1 = '\x69'
@@ -188,7 +189,7 @@ def main():
         rtscts=False,
         parity=serial.PARITY_NONE,
         stopbits=serial.STOPBITS_ONE)
-    print serial_port
+    print(serial_port)
     zmq_poller = ZMQPoller(
         tx_socket=args.tx_socket,
         rx_socket=args.rx_socket,
diff --git a/open-lst/tools/openlst_tools/terminal.py b/open-lst/tools/openlst_tools/terminal.py
index 64435fb..f017771 100644
--- a/open-lst/tools/openlst_tools/terminal.py
+++ b/open-lst/tools/openlst_tools/terminal.py
@@ -15,6 +15,8 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 from __future__ import print_function
+import six
+from builtins import input, range
 import argparse
 import zmq
 from blessed import Terminal
@@ -88,7 +90,7 @@ def _zmq_watcher_thread(self):
         self._connect_zmq()
         while self.running:
             msgs = dict(self.poller.poll(50))
-            for sock, msg in msgs.iteritems():
+            for sock, msg in six.iteritems(msgs):
                 if sock == self.rx:
                     msg = self.rx.recv()
                     self.insert_msg("<", self._process_zmq_msg(msg))
@@ -108,7 +110,7 @@ def _process_zmq_msg(self, msg):
 
     def insert_msg(self, prompt, msg):
         ''' Clear the current line, print some text, then reprint the line '''
-        if type(msg) == str:
+        if isinstance(msg, six.string_types):
             msg = bytearray(msg)
         if self.raw:
             msg = ' '.join('{:02x}'.format(x) for x in msg)
@@ -146,7 +148,7 @@ def clear_line(self):
 
     def _input_loop(self):
         try:
-            self.user_buffer = raw_input('> ')
+            self.user_buffer = input('> ')
             self._command_preprocessor()
         except (KeyboardInterrupt, EOFError):
             if readline.get_line_buffer() != '':
@@ -229,7 +231,7 @@ def _pretty_list_print(l, width=80):
     nrow = len(l) / ncol
     lrow = len(l) - (nrow * ncol)
     pstr = "{{:<{nchar}}}".format(nchar=nchar) * ncol
-    pstr = "\n".join([pstr for i in xrange(nrow)])
+    pstr = "\n".join([pstr for i in range(nrow)])
     if lrow != 0:
         pstr += "\n" + "{{:<{nchar}}}".format(nchar=nchar) * lrow
     print(pstr.format(*l))
@@ -240,7 +242,7 @@ def _navigate_tree(cmd_list, tree):
         Last level should be a list                                 '''
     cmd = cmd_list.pop(0)
     if len(cmd_list) == 0:
-        flat_level = tree if type(tree) == list else tree.keys()
+        flat_level = tree if isinstance(tree, list) else tree.keys()
         if cmd in flat_level:
             return [cmd]
         else:
diff --git a/open-lst/tools/openlst_tools/time_sync.py b/open-lst/tools/openlst_tools/time_sync.py
index b09572b..129ad74 100644
--- a/open-lst/tools/openlst_tools/time_sync.py
+++ b/open-lst/tools/openlst_tools/time_sync.py
@@ -14,6 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+from __future__ import print_function
 import os
 import argparse
 import logging
@@ -58,7 +59,7 @@ def main():
                 nanoseconds=dt.microseconds * 1000),
             timeout=0.5
         )
-    print resp
+    print(resp)
 
 if __name__ == '__main__':
     main()