PLEASE NOTE: FlexProp is not an official Parallax product, and queries for support should be made here on github and not to Parallax.
FlexProp is a simple IDE for programming the Parallax Propeller2 and/or Propeller1. It is a front end for the flexspin compiler, which can compile Spin, BASIC, PASM, or C code to Propeller 1 or 2 assembly language. The Spin and BASIC support is quite complete, and while the C support is a work in progress it works for many things.
This release has quite a few bug fixes and optimizations. See the file Changelog-compiler.txt in the doc folder for a complete list.
To use it, download "flexprop-6.9.4.zip" and then unpack it into a folder. Run flexprop.exe (or flexprop if you are on a Mac). The menus should be fairly self explanatory. The GUI will compile whatever file is on top when you click the "Compile" or "Compile & Run" button, unless there is a project (.fpide) file open, in which case it will compile that.
For Linux installation, the safest course is to build from source (see the directions on the main flexprop page on Github).
Thanks to the support of my patrons at https://www.patreon.com/totalspectrum we have digital signing certificates for Windows. When FlexProp starts up it scans the network for propellers attached via WiFi; this may generate a warning from some malware protection programs, which may safely be ignored.