diff --git a/run_unit_tests.py b/run_unit_tests.py
new file mode 100644
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+++ b/run_unit_tests.py
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+'''
+This helper script for Seattle testbed, https://seattle.poly.edu/,
+ * downloads Seattle testbed's sources from GitHub,
+ * builds them using Seattle's build scripts, and finally
+ * runs Seattle's unit tests.
+
+ Find documentation for Seattle's build scripts and unit test framework at 
+   https://seattle.poly.edu/wiki/BuildInstructions
+   https://seattle.poly.edu/wiki/UnitTestFramework
+
+ The list of components (i.e. source repositories) for which the 
+ tests are run is configurable via the repolist variable, see below.
+
+ Since other testbeds use the Seattle codebase, we make the testbed 
+ name (and thus repo address) configurable too:
+'''
+import os
+import sys
+import subprocess
+import time
+import string
+
+def main():
+  testbed = 'Seattletestbed'
+  # If you like to test the complete set of repos, get the list of 
+  # $testbed repositories via the GitHub API, grab entries like
+  #    "full_name": "Seattletestbed/foo",
+  # cut out the repo names, and create a space-separated list:
+  #
+  # repolist=`curl https://api.github.com/orgs/$testbed/repos | awk '/full_name/ {gsub("\"", ""); gsub(",", ""); split($2, a, "/"); printf a[2] " "}'`
+
+
+  # Otherwise, just supply the list yourself.
+  #
+  # Here's a mostly complete one, omitting but a few backup/outdated repos:
+  # repolist="advertiseserver affix buildscripts common demokit experimentmanager geoip_server nodemanager overlord portability repy_v1 repy_v2 seash seattlelib_v1 seattlelib_v2 softwareupdater timeserver utf zenodotus"
+
+  # This is the "bare minimum" list. Whatever changes you make to the 
+  # Seattle codebase, do make sure these tests pass (in addition to the 
+  # repo you changed, of course!)
+  repolist = ["common", "nodemanager", "repy_v2", "seattlelib_v2", "seash", "softwareupdater", "utf"]
+  for repo in repolist:
+      print "Running tests for this list of "+ testbed +"\'s repositories: " + repo
+
+  # We will also measure the time elapsed for all tests
+  test_suite_started_at = time.time()
+
+  # For every repo name, ...
+  for repo in repolist:
+      print "Testing " + testbed + '/' + repo + " now..."
+      print "https://github.com/" + testbed + "/" + repo + ".git"
+      # Clone the repo
+      subprocess.call(["git", "clone","https://github.com/" + testbed + "/" + repo + ".git"])
+
+      # If $repo has a "tests" subdir, then prepare the 
+      # test files and run the tests
+      if os.path.isdir(repo +os.path.sep +"tests"):
+          # Measure the time for this single repo's tests
+          repo_test_started_at = time.time()
+          os.chdir(repo + os.path.sep +"scripts")
+          subprocess.call([sys.executable, "initialize.py"])
+          subprocess.call([sys.executable, "build.py", "-t"])
+          os.chdir(".." + os.path.sep +"RUNNABLE")
+          subprocess.call([sys.executable, "utf.py", "-a"])
+          repo_test_finished_at = time.time()
+          repo_test_time = str(repo_test_finished_at - repo_test_started_at)
+          print "Tests for " + testbed + "/" + repo + " took " + repo_test_time + " seconds, excluding download and build" 
+          os.chdir(".." + os.path.sep + "..")
+      else:
+          print testbed + "/" + repo + "has no \"tests\" directory. Skipping."
+
+  test_suite_finished_at = time.time()
+  test_suite_time = str(test_suite_finished_at - test_suite_started_at)
+  print "Done running tests for " + testbed + ", which took me " + test_suite_time + " seconds overall."
+
+if __name__ == '__main__':
+  main()
+