I’ve just released the b28 version of the demo5 code. It includes all of the updates in the b28 update of the official RTKLIB 2.4.3 code. It also now supports both Tersus and Swift low cost dual frequency receivers. The Tersus updates were part of the official 2.4.3 release although I did make a few changes to fully support the L2 measurements as well as some changes to the makefiles to get all apps to build. The Swift receiver support is based on code I pulled from the Swift RTKLIB Github page. I suspect the receiver specific RTKLIB code for both receivers could use some improvements in translating from the raw binary formats to the Rinex/internal observation formats but at least this is a starting point. The executables are available from the download section at rtkexplorer.com. The source code is available on my Github page.
I’ve also uploaded some data sets comparing the Swift Piksi Multi and the u-blox M8T as well as between the Tersus BX306 receiver and the u-blox M8T. This data is also available from the download section at rtkexplorer.com.