[syslog-ng] patterndb and log analysis

Greetings syslog-ng users, I've never used patterndb, but have been aware of it for a while. I just cloned the git://git.balabit.hu/bazsi/syslog-ng-patterndb.git and it looks like the project has not seen much activity since 2010. Are people still using patterndb? Do the patterns not change much and that is the reason that the git database has not changed much? What are free software enthusiasts using for log analysis? Thanks for the answers! -mz