diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 2a280174d..42f4e7800 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,4 +4,4 @@
 
 It just grants us a non-exclusive license to use your contribution and certifies you have the right to contribute the code you submit. For both our sakes, we need this before we can accept a pull request. Don't worry, it's super easy.
 
-For more info, see [http://codecombat.com/legal](http://codecombat.com/legal).
\ No newline at end of file
+For more info, see [http://codecombat.com/legal](http://codecombat.com/legal).
diff --git a/bin/coco-run b/bin/coco-run
new file mode 100755
index 000000000..9524c2b69
--- /dev/null
+++ b/bin/coco-run
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+./coco-mongodb &
+./coco-brunch &
+./coco-dev-server
diff --git a/scripts/devSetup/downloader.py b/scripts/devSetup/downloader.py
index 9c016f883..477af3b44 100644
--- a/scripts/devSetup/downloader.py
+++ b/scripts/devSetup/downloader.py
@@ -1,6 +1,11 @@
+from __future__ import print_function
 __author__ = 'schmatz'
 from configuration import Configuration
-import urllib
+import sys
+if sys.version_info.major < 3:
+    import urllib
+else:
+    import urllib.request as urllib
 from dependency import Dependency
 class Downloader:
     def __init__(self,dependency):
@@ -27,10 +32,10 @@ class Downloader:
             progress_fraction = float(amount_of_data_downloaded_so_far) / float(totalsize)
             progress_percentage = progress_fraction * 1e2
             stringToDisplay = '\r[{0}] {1:.1f}%'.format('#'*int(bars_to_display*progress_fraction),progress_percentage)
-            print stringToDisplay,
+            print(stringToDisplay,end=' ')
             if amount_of_data_downloaded_so_far >= totalsize:
-                print "\n",
+                print("\n",end=' ')
         else:
             stringToDisplay = '\r File size unknown. Read {0} bytes.'.format(amount_of_data_downloaded_so_far)
-            print stringToDisplay,
+            print(stringToDisplay,end=' ')
 
diff --git a/scripts/devSetup/mongo.py b/scripts/devSetup/mongo.py
index b706c2ae8..a426f5850 100644
--- a/scripts/devSetup/mongo.py
+++ b/scripts/devSetup/mongo.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 __author__ = u'schmatz'
 from downloader import Downloader
 import tarfile
@@ -6,6 +7,8 @@ import warnings
 import os
 from configuration import Configuration
 from dependency import Dependency
+import sys
+
 
 class MongoDB(Dependency):
     def __init__(self,configuration):
@@ -39,7 +42,7 @@ class MongoDB(Dependency):
 
     def findUnzippedMongoBinPath(self):
         return self.downloader.download_directory + os.sep + \
-               (os.walk(self.downloader.download_directory).next()[1])[0] + os.sep + u"bin"
+               (next(os.walk(self.downloader.download_directory))[1])[0] + os.sep + u"bin"
 
 
 
@@ -55,15 +58,15 @@ class MongoDBDownloader(Downloader):
     def downloaded_file_path(self):
         return self.download_directory + os.sep + u"mongodb.tgz"
     def download(self):
-        print u"Downloading MongoDB from URL " + self.download_url
+        print(u"Downloading MongoDB from URL " + self.download_url)
         self.download_file(self.download_url,self.downloaded_file_path)
         self.check_download()
     def decompress(self):
-        print u"Decompressing MongoDB..."
+        print(u"Decompressing MongoDB...")
         tfile = tarfile.open(self.downloaded_file_path)
         #TODO: make directory handler class
         tfile.extractall(self.download_directory)
-        print u"Decompressed MongoDB into " + self.download_directory
+        print(u"Decompressed MongoDB into " + self.download_directory)
 
     def check_download(self):
         isFileValid = tarfile.is_tarfile(self.downloaded_file_path)
diff --git a/scripts/devSetup/node.py b/scripts/devSetup/node.py
index a788d0a69..065634aad 100644
--- a/scripts/devSetup/node.py
+++ b/scripts/devSetup/node.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 __author__ = u'schmatz'
 from downloader import Downloader
 import tarfile
@@ -10,6 +11,12 @@ from dependency import Dependency
 import shutil
 from which import which
 import subprocess
+from stat import S_IRWXU,S_IRWXG,S_IRWXO
+import sys
+
+if sys.version_info.major >= 3:
+    raw_input = input 
+
 class Node(Dependency):
     def __init__(self,configuration):
         super(self.__class__, self).__init__(configuration)
@@ -39,39 +46,42 @@ class Node(Dependency):
         #check for node here
         unzipped_node_path = self.findUnzippedNodePath()
         if self.config.system.operating_system in ["mac","linux"] and not which("node"):
-            print "Copying node into /usr/local/bin/..."
+            print("Copying node into /usr/local/bin/...")
             shutil.copy(unzipped_node_path + os.sep + "bin" + os.sep + "node","/usr/local/bin/")
-            os.chmod("/usr/local/bin/node",0777)
+            os.chmod("/usr/local/bin/node",S_IRWXG|S_IRWXO|S_IRWXU)
         shutil.copytree(self.findUnzippedNodePath(),install_directory)
         wants_to_upgrade = True
         if self.check_if_executable_installed(u"npm"):
             warning_string = u"A previous version of npm has been found. \nYou may experience problems if you have a version of npm that's too old.Would you like to upgrade?(y/n) "
             from distutils.util import strtobool
-            print warning_string
+            print(warning_string)
             #for bash script, you have to somehow redirect stdin to raw_input()
             user_input = raw_input()
             while True:
                 try:
                     wants_to_upgrade = strtobool(user_input)
                 except:
-                    print u"Please enter y or n. "
+                    print(u"Please enter y or n. ")
                     user_input = raw_input()
                     continue
                 break
         if wants_to_upgrade:
-            import urllib2, urllib
-            print u"Retrieving npm update script..."
+            if sys.version_info.major < 3:
+                import urllib2, urllib
+            else:
+                import urllib.request as urllib
+            print(u"Retrieving npm update script...")
             npm_install_script_path  = install_directory + os.sep + u"install.sh"
             urllib.urlretrieve(u"https://npmjs.org/install.sh",filename=npm_install_script_path)
-            print u"Retrieved npm install script. Executing..."
+            print(u"Retrieved npm install script. Executing...")
             subprocess.call([u"sh", npm_install_script_path])
-            print u"Updated npm version installed"
+            print(u"Updated npm version installed")
 
 
 
     def findUnzippedNodePath(self):
         return self.downloader.download_directory + os.sep + \
-               (os.walk(self.downloader.download_directory).next()[1])[0]
+               (next(os.walk(self.downloader.download_directory))[1])[0]
     def check_if_executable_installed(self,name):
         executable_path = which(name)
         if executable_path:
@@ -98,15 +108,15 @@ class NodeDownloader(Downloader):
     def downloaded_file_path(self):
         return self.download_directory + os.sep + u"node.tgz"
     def download(self):
-        print u"Downloading Node from URL " + self.download_url
+        print(u"Downloading Node from URL " + self.download_url)
         self.download_file(self.download_url,self.downloaded_file_path)
         self.check_download()
     def decompress(self):
-        print u"Decompressing Node..."
+        print(u"Decompressing Node...")
         tfile = tarfile.open(self.downloaded_file_path)
         #TODO: make directory handler class
         tfile.extractall(self.download_directory)
-        print u"Decompressed Node into " + self.download_directory
+        print(u"Decompressed Node into " + self.download_directory)
 
     def check_download(self):
         isFileValid = tarfile.is_tarfile(self.downloaded_file_path)
diff --git a/scripts/devSetup/repositoryInstaller.py b/scripts/devSetup/repositoryInstaller.py
index d1336a07d..2bf3f263d 100644
--- a/scripts/devSetup/repositoryInstaller.py
+++ b/scripts/devSetup/repositoryInstaller.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 __author__ = u'schmatz'
 import configuration
 import errors
@@ -36,11 +37,11 @@ class RepositoryInstaller():
         else:
             return False
     def cloneRepository(self):
-        print u"Cloning repository..."
+        print(u"Cloning repository...")
         #TODO: CHANGE THIS BEFORE LAUNCH
         return_code = True
         git_folder = self.config.directory.root_install_directory + os.sep + "coco"
-        print "Installing into " + git_folder
+        print("Installing into " + git_folder)
         return_code = subprocess.call("git clone " + self.config.repository_url +" coco",cwd=self.config.directory.root_install_directory,shell=True)
         #TODO: remove this on windos
         subprocess.call("chown -R " +git_folder + " 0777",shell=True)
@@ -51,15 +52,15 @@ class RepositoryInstaller():
             #sys.stdout.flush()
             raw_input(u"Copy it now")
             #shutil.copytree(u"/Users/schmatz/coco",self.config.directory.root_install_directory + os.sep + u"coco")
-            print u"Copied tree just for you"
+            print(u"Copied tree just for you")
             #print("FAILED TO CLONE GIT REPOSITORY")
             #input("Clone the repository and click any button to continue")
         elif self.config.system.operating_system == u"windows":
             raise errors.CoCoError(u"Windows doesn't support automated installations of npm at this point.")
         else:
-            print u"Cloned git repository"
+            print(u"Cloned git repository")
     def install_node_packages(self):
-        print u"Installing node packages..."
+        print(u"Installing node packages...")
         #TODO: "Replace npm with more robust package
         #npm_location = self.config.directory.bin_directory + os.sep + "node" + os.sep + "bin" + os.sep + "npm"
         npm_location = u"npm"
@@ -67,4 +68,4 @@ class RepositoryInstaller():
         if return_code:
             raise errors.CoCoError(u"Failed to install node packages")
         else:
-            print u"Installed node packages!"
+            print(u"Installed node packages!")
diff --git a/scripts/devSetup/ruby.py b/scripts/devSetup/ruby.py
index f7c0f373c..0fc59b177 100644
--- a/scripts/devSetup/ruby.py
+++ b/scripts/devSetup/ruby.py
@@ -1,3 +1,4 @@
+from __future__ import print_function
 __author__ = u'root'
 
 import dependency
@@ -18,7 +19,7 @@ class Ruby(dependency.Dependency):
         elif not is_ruby_installed:
             self.install_ruby()
         elif is_ruby_installed and is_gem_installed:
-            print u"Ruby found."
+            print(u"Ruby found.")
     def check_if_ruby_exists(self):
         ruby_path = which(u"ruby")
         return bool(ruby_path)
@@ -38,4 +39,4 @@ class Ruby(dependency.Dependency):
         raise NotImplementedError
 
     def install_gems(self):
-        gem_install_status = subprocess.call([u"gem",u"install",u"sass"])
\ No newline at end of file
+        gem_install_status = subprocess.call([u"gem",u"install",u"sass"])
diff --git a/scripts/devSetup/systemConfiguration.py b/scripts/devSetup/systemConfiguration.py
index 88ddb4676..9d49e95ce 100644
--- a/scripts/devSetup/systemConfiguration.py
+++ b/scripts/devSetup/systemConfiguration.py
@@ -22,7 +22,10 @@ class SystemConfiguration(object):
             raise NotSupportedError(u"Your platform," + sys.platform + u",isn't supported.")
 
     def get_current_working_directory(self):
-        return os.getcwdu()
+        if sys.version_info.major < 3:
+            return os.getcwdu()
+        else:
+            return os.getcwd()
 
     def get_virtual_memory_address_width(self):
         is64Bit = sys.maxsize/3 > 2**32