PG Log Parser is a tool to help database administrators identify errors and performance issues by parsing the logs in the pg_log directory and generating a html report.
The Postgres Log Parserproject is a PostgreSQL Community project that is a part of the pgFoundry.
The pgFoundry page for the project is at http://pgfoundry.org/projects/pglogparser, where you can find downloads, documentation, bug reports, mailing lists, and a whole lot more.