Luminance HDR (ex-Qtpfsgui) is an open source HDR imaging workflow tool based on pfstools and pfstmo. It supports OpenEXR, Radiance RGBE, LogLuv TIFF, Raw image formats and PFS and can save tonemapped images to a JPEG, PNG and TIFF. Alignment of bracketed shots can be done using align_image_stack utility from Hugin panorama stitcher. Manual ghost removal is possible.