Qualitas Corpus System Status

Our criteria regarding what systems are included in the corpus are such that we try to only include systems that will remain actively developed. As this requires predicting the future, we sometimes get it wrong. As some users of the corpus may wish to only target those systems under active development, we include metadata that indicates, according to our understanding, the status of each system. The status codes are as follows:-
Active
All indications are that the system's developers intend there to be future development on the system, even if there has been none for a long time.
Dead
Known to be no longer under development, typically by an explicit declaration by those associated with it. Where (and what) the declaration is should be included in the system notes.
Dormant
The developers have explicitly stated there is currently no active development and no plans for any, but there may be at some point in the future. The system notes should indicate what the statement was.
Moribund
There has been no development for some time and no evidence that there will be any in the future, but it has not been declared dead and there seems still the possibility for future development. The system notes should indicate on what basis this status was chosen.
Defunct
There has been no development for some time, no evidence that there will be any in the future, and it has not been declared dead. But all indications are there is unlikely to be any future development. The system notes should indicate on what basis this status was chosen.
Closed
Has become closed source. The system notes should indicate on what basis this status was chosen.
Lost
Can no longer find any official record of its existence. The system notes should indicate on what basis this status was chosen.
Retired
No longer under development in this form, but now exists in some other form. The system notes should indicate on what basis this status was chosen, in particular what the other form is.
Needless to say, some choices of status are a judgement call on our part. For example, we may have missed an announcement regarding a system that would mean its real status is different to what we say. [an error occurred while processing this directive]