zx SCR editor 0.9 is available for download (2012.06.18)
"zx SCR editor is a SDL graphical editor for ZX Spectrum SCREEN$ files. Slow if you are
on Panorama VESA (didn't test it under SNAP or other accelerated
driver). Funny. This is an updated version of my old port. Open Source under the GNU GPL license".
It requires kLIBC / GCC Runtime Library.
Link: http://hobbes.nmsu.edu/h-search.php?key=zxscredit_0.9_os2.zip
Port by Mentore Siesto.