TRY ALSO THIS: Rapid Prototyping System Selector
= Method not commercially available anymore or research is ended
= Method under research
= Commercial method
= Equipment manufacture
= Link checked
Solid Ground Curing (SGC) by Cubital Inc.
Dead link, look to Internet archive
(?)
Design-Controlled Automated Fabrication
(DESCAF) by Light
Sculpting Inc.
Rapid Micro Product Development (RMPD) by MicroTEC
Microstereolithography
by Ecoles Polytechniques f?d?rale de Lausanne (EPFL) 
CURING WITH A VISIBLE LIGHT LASER
Mark 1000 by Quadrax Laser Technologies
Inc. (company merged to 3D Systems 1992) CURING WITH AN UV-LASER (SINGLE BEAM)1
StereoLithography (SLA)2
by 3D Systems Stereolithography by Aaroflex
Inc.
Stereolithography by Russian
Academy of Sciences 
Stereos (Stereos line was sold to 3D
System 1997) by EOS
LMS by Fockele & Schwarze Solid Laser Diode Plotter System (SLP)
by Denken 
Solid Creation System (SCS) by Sony/D-MEC
Soliform by Teijin-Seiki UniRapid by Unirapid Inc. Solid
Object Ultra-Violet Laser Plotting (SOUP) by Mitsubishi/CMET
Meiko by Meiko
Air Bubble Stereolithography by Osaka
Sangyo University CURING WITH TWO LASER BEAMS SIMULTANEOUSLY
Holographic Interference Solidification
by Quadtec Beam Interference Solidification by
Batelle Development Corporation Photochemical Machining by Formigraphics
Inc. CURING BY VISIBLE LIGHT WITH A DVD-DEVICE
Direct Photo Shaping (DPS) by SRI International (1998-2001)Dead link, look at Internet archive
HYBRID, COMBINING INKJET-TECHNIQUE AND CURING WITH AN UV-LAMP
Objet 3D-printer by Objet
Geometries Ltd.
ELECTRICAL CONDUCTING LIQUID (ELECTROLYTE)
Electrochemical Fabrication (EFAB)
by Information Science Institute, University
of Southern California WATER
Rapid
Freezing Prototyping (RFP) by University
of Missouri - Rolla
POWDERS
Selective Laser Sintering (SLS) by DTM Corporation
(was sold to/eat by 3D System at 2001), dead link, web site content lost: Internet archive can't show history
SLS (Solid Imaging Solutions) by
3D Systems
Direct Plastic/Metal Laser Sintering (DMLS) by EOS
Selective Laser Sintering of Ceramics
by Rheinisch-WestfДlische Technische Hochschule Aachen Selective Laser Reaction Sintering
(SLRS) by University of Texas
Direct Metal Fabrication (DMF)
by Rockwell Scientific Compacted-powder SLS by The University
of Manchester 
MELTING WITH A HEAT TRANSFERRING LASER
Laser Engineered Net Shaping (LENS)
by Optomec/Sandia National Laboratories
(nowadays method is called DMDS - Direct Material Deposition System) Lasform by AeroMet
Direct Metal Deposition (DMD) by Precision
Optical Manufacturing/The University of Michigan Direct Light Fabrication (DLF) by Los
Alamos National Laboratory Controlled Metal Buildup (CMB) by Fraunhofer
IPT Direct Light Fabrication by University
of Birmingham's School of Metallurgy and Materials Laser Aided Direct Rapid Prototyping
(LADRP) by University of Central Florida
Laser-aided Powder Solidification / Powder Jet (LAPS-J) by Institute fЭr
Strahlwerkzeuge (IFSW), The University of Stuttgart Freeform Powder Molding (FPM) by
Rensselaer Polytechnic Institute (RPI)
3D-Printing by Z
Corporation (?) Direct Shell Production Casting (DSPC)
by Soligen (1992-2004?)
Prometal by ExOne
There is also two other firms which have 3DP licence. Therics makes medicine (time release pills) and Specific Surface uses 3DP to produce ceramic filters for power plants.
Fused Deposition of Ceramics (FDC)
by Rutgers University
Topographic Shell Fabrication (TSF)
by Formus Multiphase
Jet Solidification (MJS) by Fraunhofer IFAM and Fraunhofer IPA
SOLID MATERIALS
Fused Deposition Modeling (FDM) by
Stratasys Melted Extrusion Manufacturing (MEM)
by CLRF, Tsinghua University/Fang Ming Da Co. 
Contour Crafting (CC) by Dr.
Khoshnevis, University of Southern California METHODS BASED ON WELDING
Shape Melting by Babcock & Wilcox
Shape Welding by Thyssen Ag 3D Welding by Cranfield University
Droplet Welding (DROW) by AeroChem
Research Laboratory, Division of Titan Corp.
Incremental Fabrication by Incre
Inc. Recursive Mask and Deposit MD* by Carnagie
Mellon University
Shape Deposition Manufacturing (SDM)
by Carnegie Mellon University
Multi
Jet Modeling by 3D Systems
3D Plotting by Solidscape Inc.
(formerly known as Sanders Prototype Inc.) Ballistic Particle Manufacturing (BPM)
by BPM Liquid Metal Jetting by University
of Texas Photo Chemical Machining (PCM) by Texas
Instruments
SHEETS
Laminated
Object Manufacturing (LOM) by Helisys Inc. Curved-layer LOM by University of Dayton
and Helisys Inc. Laminated Object Manufacturing (LOM)
by Landfoam Topographics Slicing Solid Manufacturing (SSM) by
CLRF, Tsinghua University Computer-Aided Manufacturing of Laminated
Engineering Materials (CAM-LEM) by CAM-LEM Inc./Case Western Reserve University
LOM which uses ceramic material by
Ceramic Composite Inc.
Paper Lamination Technology (PLT)
by Kira Corporation
Layer Milling by Helsinki University
of Technology / Pro Tooling Oy 
Laser Profiling Machine (LPM) by
Liptool Ltd
TruSurf by Gilmore
Engineers Pty Ltd 
Offset Fabrication by Ennex
Corporation JP System 5 by Schroff
Development Corporation
HotPlot by Sparx AB 
Staratoconception by Charlyrobot
/ Cirtes 
GAS, ATOMS AND OTHER ODD STUFF
Gas Phase Deposition (GPD) by University
of Texas Laser-Assisted
Chemical Vapor Deposition (LCVD) by Georgia
Institute of Technology Selective Area Laser Deposition (SALD)
by University of Connecticut
Selective Laser Reaction Sintering
(SLRS) by University of Connecticut and University of Texas Laser Assisted Selective Area Metal
Organic Chemical Vapor Deposition (huh?) LASAMOCVD by University of Connecticut
Manipulation of individual atoms
with a scanning tunnel microscope by Eigler and Schweizer, IBM Inc. Molecular nanotechnology by Institute
for Molecular Manufacturing MISC
Patternless Casting Modeling (PCM)
by Center of Laser Rapid Forming, Tsinghua University MACHINE FOR ALL KIND OF METHODS
M-220, Chinese machine for SSM,
MEM, SLA, SLS, PCM, etc. by Center of Laser Rapid Forming, Tsinghua University
1 These methods are more or less same as stereolithography. Back
2 Yes, I know that SLA refers to an apparatus, but an acronym SLA is more familiar to masses than SL. Back
All data has been collected from following resources:
Direct contacts to persons
Rapid Prototyping Mailing List, rp-ml
Rapid Prototyping Report by CAD/CAM Publishing
State of The Industry Report by Terry Wohlers, Wohlers Associates
Automated Fabrication by Marshall Burns, Ennex Corporation
Rapid Prototyping and Tooling by David Atkinson, The University of Nottingham
Proceedings of SFF Symposium 1997, Austin Texas
Proceedings of Rapid Prototyping and Manufacturing '98, Dearborn Michigan
laser [at] shatura.laser.ru