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check_postgres vs pgwd: catalog facts
check_postgres	pgwd
Free Free and open source under the BSD-2-Clause license.	Free The MIT licensed software is distributed free of charge.
Command line	Windows, Linux, Command line
Checks a range of PostgreSQL database attributes Works with Nagios, MRTG, or standalone scripts	Monitors active, idle, and stale PostgreSQL connections Sends threshold alerts through Slack, Loki, PagerDuty, Teams, or webhooks
Requires Perl and access to a PostgreSQL database	It is not a full PostgreSQL metrics platform, APM, or query-performance suite.
Downloadable app	Downloadable app
Open source	Open source
License: BSD-2-Clause	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 6, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.