MeshWorks
MeshWorks is an advanced mesh editing software built using the powerful MeshLib mesh library. With MeshWorks you can create, transform and modify meshes very easily. A mesh is usually created by exporting a solid model from another CAD system. Meshes created this way are very difficult to modify... MeshWorks gives you the power to manipulate meshes so that you can alter their geometry and make them suitable to your needs.
http://www.fpsols.com/installers/MeshWorks.exe - 1Mb - Download - Screenshot

Mesh To Solid for Rhino
Mesh To Solid for Rhino is a plug-in for Rhino 2. 0 and 3. 0. This plug-in gives Rhino to ability to convert a mesh into a solid. A mesh is a useful entity when it comes to defining geometry of an object. However, certain Rhino commands such as boolean operations, offset, extrusion, etc, cannot... Mesh To Solid for Rhino, on the other hand, studies the mesh object and determines the features that define the geometry of the model. ... Moreover, Rhino does not export meshes to IGES, STEP, ACIS, ParaSolid, VDA and similar file formats, thereby rendering the mesh model useless for further...
http://www.fpsols.com/installers/MeshToSolidRH.exe - 1b - Download

MeshWorks for Rhino
MeshWorks for Rhino is a plug-in for Rhino. It adds a variety of mesh manipulation commands to Rhino. Some of the useful commands are given below: Hollow: This command hollows the mesh to a given wall thickness. Hollowing is particularly useful while preparing a model for Rapid Prototyping as... ExtractShells: This command extracts connected surfaces from a single mesh and creates a new mesh for each connected surface. ... Stitch: This command knits loosely tied faces of a mesh and attempts to make a mesh water-tight.
http://www.fpsols.com/installers/MeshWorksRH.exe - 3Mb - Download

STL Export for AutoCAD
STL Export for AutoCAD is a plug-in for AutoCAD 2000, 2000i, 2002 and 2004. This plug-in gives AutoCAD the ability to export geometric data to ASCII as well as binary Stereolithography (STL) files. AutoCAD already has a "STLOUT" command which exports STL files. ... With STL Export for AutoCAD you can now export multiple 3D Solid, 3D Face, Polygon Mesh and Polyface Mesh entities to a single STL file. ... It does not export 3D Face, Polygon Mesh and Polyface Mesh entities which can very well be a part of a STL model.
http://www.fpsols.com/installers/STLExportAC.exe - 391Kb - Download

AMSES Plate
FEM analysis and design of reinforced concrete slabs according to Eurocode 2. The program uses enhanced user interface for the geometry and load input. The load is organised in actions (load groups) which are combined in load cases. No special care is needed for mesh, since the mesh is... Kirchhoff (thin plate theory) internal forces are calculated, principal moments, design moments and reinforcement areas.
http://www.ainet-sp.si/Download/PlateEn10.zip - 2Mb - Download - Screenshot

Terrain for Rhino 3.0
Terrain for Rhino is a terrain modeling plug-in for Rhinoceros (commonly known as Rhino). This plug-in gives Rhino the ability to create a terrain mesh from a set of unordered points. The terrain mesh is created as a Delaunay Triangulation, which is regarded as the best method to create a... If the distance between two points is larger than the search radius then they are not connected by a face. ... A search radius of zero will remove the connectivity constraint and all points will be connected, however far they may be from each other.
http://www.sycode.com/installers/terrain_rh30.exe - 2Mb - Download

Pictomod3d
Pictomod3D creates textured 3D mesh models from images of real objects. It takes either a rotated scan of an object or a few images from arbitrary angles, and outputs 3D objects in Wavefront OBJ or DirectX X file format. Pictomod3D is for rapid prototyping of new models and for people who want... Integrates easily into your mesh sculpting process. ... Save the textured 3D mesh in either OBJ or X file format. ... Rapid prototyping for Ready To Use Texture Mapped Models. ... First collect your BMP or JPEG images, or extract them from MPEG or AVI files with the FrameExtractor utility.
http://styxar.com/Files/Pictomod3D.zip - 955Kb - Download - Screenshot

Terrain for AutoCAD
Terrain for AutoCAD is a terrain modeling plug-in for AutoCAD. This plug-in gives AutoCAD the ability to create a terrain mesh from a set of unordered points, lines, polylines and splines. The terrain mesh is created as a Delaunay Triangulation, which is regarded as the best method to create a... The search radius determines the whether two points can be part of the same triangular face. ... If the distance between two points is larger than the search radius then they are not connected by a face.
http://www.sycode.com/installers/terrain_ac.exe - 2Mb - Download - Screenshot

PIX Import for AutoCAD
PIX Import for AutoCAD is a plug-in for AutoCAD 2000, 2000i, 2002 and 2004. This plug-in gives AutoCAD the ability to import geometric data from PIX files. PIX files are the native file format of a digitizer software called Dr. Picza which comes bundled with Roland DG digitizers. ... You can import the data as points, lines, polylines, splines, faces, polyface mesh or polygon mesh. ... PIX Import for AutoCAD is very easy to use. ... Simply type "PIXIN" at the AutoCAD command prompt and select a PIX file to import.
http://www.fpsols.com/installers/PIXImportAC.exe - 391Kb - Download

OBJ Export for AutoCAD
OBJ Export for AutoCAD is a plug-in for AutoCAD 2000, 2000i, 2002 and 2004. This plug-in gives AutoCAD the ability to export geometric data from AutoCAD to Alias|Wavefront OBJ files. Alias|Wavefront is the world's leading innovator of 2D/3D graphics technology for the film, video, games,... OBJ Export for AutoCAD can export the following AutoCAD entities: 3D Face, Polygon Mesh, PolyFace Mesh and Solid. ... These entities form the backbone of any 3D drawing. ...   OBJ Export for AutoCAD is very easy to use.
http://www.fpsols.com/installers/OBJExportAC.exe - 391Kb - Download