I'm working on a web application that manages VRML files. I also want to let users see the uploaded files, without requiring a specific plug-in or player. X3DOM allows viewing X3D files without plug-ins on most browsers, so I'd like to use it.
Alas, it works on X3D files, and not VRML files. I need to convert VRML files to the X3D format.
The same people behind X3DOM released a package called InstantReality that has a utility that converts VRML to X3D. However, I'd much rather not use an external utility (I'm not even sure I'm allowed to use it on a commercial environment, I couldn't find its terms of use) but call a conversion routine from my application code.
MeshLab! There's an opensource project called MeshLab that does all sorts of processing on 3D meshes. It also has a command-line tool called MeshlabServer.
Running meshlabserver.exe -i <wrl file> -o <x3d file> performs the conversion (very quickly). Since it's open-source, I don't have any licensing issues.