Sure, check out their github pages (here's a few):
* https://github.com/mozilla-services/heka-mozsvc-plugins
* https://github.com/mozilla-services/heka
My friend works for Mozilla - that's how I knew.
* https://github.com/mozilla-services/heka-mozsvc-plugins
* https://github.com/mozilla-services/heka
My friend works for Mozilla - that's how I knew.
(Source: I work for Mozilla, on the Services team)