Firebird RDBMS offers ANSI SQL features & runs on Linux, Windows & several Unix platforms. Features excellent concurrency & performance & powerful stored procedure & trigger language.
More information and downloads at https://firebirdsql.org/, issue tracker is https://github.com/FirebirdSQL/firebird/issues
The StackCollect SCM is written in Python and is free to download, more advanced features can be purchased from StackCollect.
Monitored Server Platforms Include:
Windows Server 2012 R2
Monitored Database Platforms Include:
PostgreSQL
Microsoft SQL Server
MariaDb
MySQL