diff --git a/postgresql/README.md b/postgresql/README.md
index ecd576c..1357f84 100644
--- a/postgresql/README.md
+++ b/postgresql/README.md
@@ -1,2 +1,13 @@
 # postgresql-keepalive
 Go utility performs periodic operations to PostgreSQL server.
+
+## Related
+
+Part of the `*-keepalive` family — same pattern, different databases:
+
+- [mongodb-keepalive](https://github.com/tiennm99/mongodb-keepalive) — Mongodb
+- [mysql-keepalive](https://github.com/tiennm99/mysql-keepalive) — Mysql
+- [redis-keepalive](https://github.com/tiennm99/redis-keepalive) — Redis
+- [valkey-keepalive](https://github.com/tiennm99/valkey-keepalive) — Valkey
+- [couchbase-keepalive](https://github.com/tiennm99/couchbase-keepalive) — Couchbase
+