Top 7 flat-file web publishing systems

Top 7 flat-file web publishing systems [LinuxBeacon]: "While the vast majority of existing open source web publishing systems1) rely on database back-ends, there are quite a few high-quality applications that use plain text files instead of databases to store and manage data. These applications are often called flat-file systems, and they offer a few advantages that make them viable alternatives to the database-driven applications."