Simple DNS Plus v. 6.0 build 105 is now available at http://simpledns.com/download.aspx
In this update we have added the HTTP API commands "zoneversions" (to list stored versions of a zone) and "getzoneversion" (to get the zone file text of a specific zone version).
It also includes 3 bug fixes - for details see http://simpledns.com/relnotes-6-0
Maintenance releases of v. 5.3 (build 106) and v. 5.2 (build 135) are available for download at http://simpledns.com/download-oldver.aspx (for licensed users only).
These include a number of bug fixes. For details see http://simpledns.com/relnotes-5-3 and http://simpledns.com/relnotes-5-2