Vector Magic - Easily convert JPG, PNG, BMP, GIF bitmap images to SVG, EPS, PDF, AI, DXF vector images with real full-color tracing, online or using the desktop app!
Sketch 2 Code - Turn hand-drawn design into a HTML with AI. By Microsoft.
potrace - Open source program that transforms bitmaps into vector graphics.
PaintCode - PaintCode is a unique vector drawing app that generates Objective-C or Swift code in real time, acting as a bridge between developers and graphic designers.
RasterVect - Professional raster to vector conversion program (vectorizer).
Schwartz - Very similar to paintcode but costs wayyy less