I don't know if you already checked the description on the garage page, but the software will support the heart rate monitor from alive technologies, as it uses a bluetooth connection, and I have all the necessary documentation for it.

At a quick glance, I was unable to find any such information about the frwd product (seems to me that it might collet the data to some memory card or something like that).

Anyhow, a plug-in architecture is in consideration for the program, so that one could use custom data sources. This is not yet thoroughly thought, however, so I don't yet know what kind of data will be implemented. Probably something like receiving events with time stamps, that could have some sort of data type and description added (for example, you could then add your own heart rate monitor, or a monitor of a completely different kind, like a temperature sensor or what ever).

BTW, I would prefer to have the feature requests & bug reports into the garage project, so that they'll stay neatly in one place. Unfortunately one needs to have an account to post new feature requests or bug reports, but the registration is simple..