PostgreSQL Workload Analyzer is a performance tool for PostgreSQL 9.4 and newer allowing to collect, aggregate and purge statistics on multiple PostgreSQL instances from various stats extensions.
Version 4.1 has just been released. It brings support for PostgreSQL 13, including all new fields in pg_stat_statements 1.8 (planning and WAL usage statistics).
It also add support for pg_stat_kcache version 2.2, which adds better support for nested queries and planning statistics (for PostgreSQL 13 and later).
You can see the full list of changes for each related project release:
Thanks to Andriy Bartash, github user mikecaat and all other contributors!