diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9cf79f2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.gh_token
diff --git a/sort_projects_by_activity.py b/sort_projects_by_activity.py
new file mode 100755
index 0000000..56c8873
--- /dev/null
+++ b/sort_projects_by_activity.py
@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+
+"""
+Sorts projects in README.md with GitHub links by commit activity, from oldest
+to newest. This can help identify dead or inactive projects for removal.
+"""
+
+import os
+import re
+from datetime import datetime
+
+import github
+
+
+def main():
+    """Main process."""
+
+    # Read contents of README.md file
+    contents = open("README.md", "r").read()
+    gh_pattern = r"https?:\/\/github\.com\/([\w\.\-]+\/[\w\.\-]+)"
+    gh_repos = list(set(re.findall(gh_pattern, contents)))
+
+    # Create GitHub object for API queries, using token if available
+    token = None
+    if os.path.isfile(".gh_token"):
+        with open(".gh_token", "r") as openfile:
+            token = openfile.read().strip()
+    g = github.Github(token)
+
+    # Iterate through repos and build results array with last updated date
+    results = []
+    for idx, gh_repo in enumerate(gh_repos):
+        print("Processing %s (%d of %d)..." % (gh_repo, idx + 1, len(gh_repos)))
+        try:
+            repo = g.get_repo(gh_repo)
+            result = {
+                "repo": gh_repo,
+                "updated": datetime.strftime(repo.updated_at, "%Y-%m-%dT%H:%M:%S"),
+            }
+            # print("  %s" % repo.updated_at)
+        except github.GithubException:
+            # If repo doesn't exist, set updated to an empty string
+            result = {"repo": gh_repo, "updated": ""}
+            # print("  Error reading repo information. Repo may no longer exist.")
+        results.append(result)
+
+    # Print the results
+    print("\nFound %d GitHub repositories. Sorted by date updated:" % len(gh_repos))
+    results = sorted(results, key=lambda x: x["updated"])
+    print("\n".join(([x["repo"] + " " + x["updated"] for x in results])))
+
+
+if __name__ == "__main__":
+    main()