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This is a basic tool performing data conversion between formats. This tool can be used to greatly enhance the number of supported formats in SNAP, at both the reading and writing level.
A basic call converting any of the available format to GeoTIFF is
gdal_translate -of GTiff -co "TILED=YES" input.anything output.tif
gdal_
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gdal_rasterizerasterize
takes an input vector file and outputs a raster file.
A subset of the functionnalities of this tool is available in OTB with the Rasterization tool. Wrapping the OTB tool might be easier as the interfacing will be close to the other OTB tool.
gdal_polygonize
gdal_fillnodata
gdal_sieve