diff --git a/api/__init__.py b/api/__init__.py
index a37ccdd..6e6840e 100644
--- a/api/__init__.py
+++ b/api/__init__.py
@@ -1,4 +1,4 @@
-from .project import have_project, create_project, delete_project
+from .project import list_project, have_project, create_project, delete_project
 from .project import is_project_open, get_project_open_count, open_project, close_project
 from .project import copy_project
 
diff --git a/api/project.py b/api/project.py
index 30743aa..c9cdfb0 100644
--- a/api/project.py
+++ b/api/project.py
@@ -1,10 +1,19 @@
 import psycopg as pg
+from psycopg.rows import dict_row
 from .connection import g_conn_dict as conn
 
 # no undo/redo
 
 _project_open_count: dict[str, int] = {}
 
+def list_project() -> list[str]:
+    ps = []
+    with pg.connect(conninfo="dbname=postgres host=127.0.0.1", autocommit=True) as conn:
+        with conn.cursor(row_factory=dict_row) as cur:
+            for p in cur.execute(f"select datname from pg_database where datname <> 'postgres' and datname <> 'template0' and datname <> 'template1' and datname <> 'project'"):
+                ps.append(p['datname'])
+    return ps
+
 def have_project(name: str) -> bool:
     with pg.connect(conninfo="dbname=postgres host=127.0.0.1", autocommit=True) as conn:
         with conn.cursor() as cur:
diff --git a/tjnetwork.py b/tjnetwork.py
index 558e6f4..f927a05 100644
--- a/tjnetwork.py
+++ b/tjnetwork.py
@@ -116,6 +116,9 @@ def read_inp(name: str, inp: str) -> None:
 # operation
 ############################################################
 
+def list_project() -> list[str]:
+    return api.list_project()
+
 def get_current_operation(name: str) -> int:
     return api.get_current_operation(name)