LibreNMS is a fork of [Observium][1].  Observium was written by:
- Adam Armstrong
- Tom Laermans
- various others as indicated in the file contents and commit logs

Contributors to LibreNMS:
- Paul Gear <github@libertysys.com.au> (paulgear)
- Neil Lathwood <neil@lathwood.co.uk> (laf)

[1]: http://observium.org/ "Observium web site"