A Digest of the Early Connecticut Probate Records in three volumes is available for free at Internet Archive as follows:

Volume 1- A Digest of the Early Connecticut Probate Records, Vol I, 1635-1700

Volume 2- A Digest of the Early Connecticut Probate Records, Vol II, 1700-1729

Volume 3- A Digest of the Early Connecticut Probate Records, Vol III, 1729-1750