PNP 4 Nagios

NagVis   (Compare Project)

Mostly written in PHP

License: gpl

Monitoring Plugins   (Compare Project)

Mostly written in C

License: gpl3_or_later

Icinga   (Compare Project)

License: gpl

Nagios   (Compare Project)

Mostly written in C

License: gpl

RRDtool   (Compare Project)

Mostly written in C

License: gpl

Perl   (Compare Project)

Mostly written in C

License: Artistic_License_2_0, GNU_General_Public_License_1_0, gpl

SQLite   (Compare Project)

Mostly written in C

License: sqlite

PostgreSQL Database Server   (Compare Project)

Mostly written in C

License: postgresql

Python programming language   (Compare Project)

Mostly written in Python

License: python_software_foundation

OpenSSH   (Compare Project)

Mostly written in C

License: Unknown