diff --git a/tools/list_ptls.py b/tools/list_ptls.py
new file mode 100755
index 000000000..db7eb8967
--- /dev/null
+++ b/tools/list_ptls.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python3
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import argparse
+
+import yaml
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument(
+    '-p', '--projects',
+    default='./reference/projects.yaml',
+    help='projects.yaml file path (%(default)s)',
+)
+format_grp = parser.add_mutually_exclusive_group()
+format_grp.add_argument(
+    '-f', '--full',
+    action='store_const',
+    const='full',
+    dest='mode',
+    default='full',
+    help='show all details (default)',
+)
+format_grp.add_argument(
+    '-e', '--email',
+    action='store_const',
+    const='email',
+    dest='mode',
+    help='show only email addresses',
+)
+format_grp.add_argument(
+    '-i', '--irc',
+    action='store_const',
+    const='irc',
+    dest='mode',
+    help='show only IRC nics',
+)
+format_grp.add_argument(
+    '-c', '--csv',
+    action='store_const',
+    const='csv',
+    dest='mode',
+    help='all data, comma separated',
+)
+args = parser.parse_args()
+
+
+with open(args.projects, 'r', encoding='utf-8') as f:
+    projects = yaml.safe_load(f.read())
+
+fmt_str = {
+    'full': '{name}\t{irc}\t{email}\t{project_name}',
+    'irc': '{irc}',
+    'email': '{email}',
+    'csv': '"{name}","{irc}","{email}","{project_name}"',
+}[args.mode]
+
+for project_name, project_data in projects.items():
+    ptl = project_data['ptl']
+    print(fmt_str.format(project_name=project_name, **ptl))