openssl-0.9.7-stable-SNAP-<date>.tar.gz
   Daily snapshots, 0.9.7 stable branch (bugfixes).

openssl-0.9.8-stable-SNAP-<date>.tar.gz
   Daily snapshots, 0.9.8 stable branch.

openssl-SNAP-<date>.tar.gz
   Daily snapshots, development version (0.9.9-dev).

openssl-fips-test-1.2.0.tar.gz
   OpenSSL 1.2.0 FIPS 140-2 module. NOT VALIDATED, FOR TESTING ONLY.

Other snapshotss are from specific CVS branches of OpenSSL.

For released versions of OpenSSL, see
http://www.openssl.org/source/