wwiv41md.zip
(304K)
WWIV BBS v4.11 – Source Code – this version also appears to be v4.11, but there are differences in many of the file sizes.
wwiv421.zip
(368K)
WWIV BBS v4.21 – Binary Distribution
wwiv421as.zip
(448K)
WWIV BBS v4.21a – Source Code (README.421 differs from WWIV421S above)