Answer:

BETA

Answer	Crossword Clue
BETA	..-carotene
BETA	Kind of ray
BETA	Test release

BETA	Alpha successor
BETA	Portfolio measure
BETA	Pre-release version
BETA	Second in a series
BETA	Kind of test
BETA	Stage for working the kinks out
BETA	Alpha follower
BETA	Key letter

BETA	Before gamma
BETA	Greek letter
BETA	Type of ray
BETA	VHS alternative
BETA	For-testing version
BETA	Gamma preceder
BETA	Software prototype
BETA	.. blocker

BETA	Test version
BETA	Early VCR tape format
BETA	... blocker
BETA	Alpha follwer
BETA	.. carotene
BETA	Old VHS option
BETA	Version needing testing
BETA	Second in a Greek series

BETA	Alpha, .., gamma
BETA	Old VHS alternative
BETA	Second Greek letter
BETA	Software test version
BETA	In development, as software
BETA	Onetime VHS rival
BETA	First Greek consonant
BETA	Phi follower?

BETA	Phi .. Kappa
BETA	As yet unmarketed, as software
BETA	Former VHS alternative
BETA	Obsolete VCR format
BETA	Prerelease software version