Heartbeat is free software. It's both free as in liberty (libre) and free as in "free beer" (gratis).
And it's a community development, with lots and lots of opportunties to contribute to the project - more than anyone knows.
If you appreciate Heartbeat, then contributing back to the project is one of the best ways to show that appreciation.
You can contribute to heartbeat - and the community will be poorer for it if you don't.
Here are a few more common ways to contribute to the project:
Spread the Word - tell others about Heartbeat
Write up a few paragraphs about how you use Heartbeat and add to the SuccessStories page
Give a talk at your LUG or other local user group - and put your talk on the Talks page
Give a talk at a conference on Heartbeat - and put your talk on the Talks page
Write an article for a magazine or online e-zine about Heartbeat
Add articles you saw or wrote that to the PressRoom
Sell Support for it.
Become our project PublicityCzar - and make heartbeat more visible. Help us grow our customers and contributors.
Provide feedback
provide input on features for the FeatureWishList
write good bug reports for Bugzilla
Help other users
Translations
OCF Resource Agent metadata
STONITH Agents
Update the web site - bring light out of darkness, and organization out of chaos
Procedure for updating the web site.
Find things that are R1 only (start with the ha.cf page) and mark them as R1 only, and vice versa.
Add to the FAQ
Add to the HowToContribute page (this page!)
Steal from others - like Firefox.
Figure out what's missing from the DTD annotations and add it
Add to the CIB idioms collection
Help with the Education project - Making Heartbeat the best documented OSS project
Test!!
Compile the Hg tip nightly on your favorite platform and run BasicSanityCheck on it
Help us run CTS as we get close to release times
Test portions you have hardware to test with (e.g., STONITH modules).
Port heartbeat to other platforms
Write code
provide code patches and ContactUs, e.g. on the development mailing list
pick things from the FeatureWishList and implement them
Support the developers