I am looking for a tool to convert raster (TIF, JPG) to ECW. I found this two year old question/answer How to convert orthophotomap to .ecw file? The answer is to use GDAL with an ERDAS SDK. I checked the current free versions of ERDAS SDK: The free version of ERDAS SDK is still read-only.
Is there meanwhile another way/tool as GDAL/ERDAS-API to convert a raster to ECW?
(I prefer a free program. If it is not free, information about the approximate cost is helpful.)