LineTracer is described as 'tool for converting scanned hand-drawn sketches to vector format. It exports to EPS, which means the output can be used by about any program. It is primarily meant for helping illustrators and animators. The application is GUI based and runs on Windows'. There are more than 10 alternatives to LineTracer for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and potrace. The best alternative is Inkscape, which is both free and Open Source. Other great apps like LineTracer are potrace (Free, Open Source), Vectorizer.io (Paid), DragPotrace (Free) and Autotracer.org (Free).
KVEC is a tool which can vectorize images using several graphic formats: WMF Windows Metafile, Enhanced Metafile, AutoCad DXF, HPGL, ART, Postscript, Adobe Illustrator AI, SVG/SVGZ (Scalable Vector Graphics), SWF, DST, HTML.
Delineate is a tool for converting raster images to SVG (Scalable Vector Graphics) using AutoTrace or potrace. It loads images using JIU and displays results using Batik. Input formats are JPEG, PNG, GIF, BMP, TIFF, PNM, PBM, PGM, PPM, IFF, PCD, PSD, RAS.