| AJAY KNITWEARS | Textiles | Private |
| 3I INFOTECH LIMITED | IT | Private |
| A BOND STRANDS PVT LTD | Computer Machinery and Equipme | Private |
| AARTHI CONSULTANTS PRIVATE LIMITED | IT | Private |
| ABB GLOBAL INDUSTRIES AND SERVICES LTD. | Engineering | Public |
| ABS CONSULTANTS PVT. LIMITED | IT | Private |
| ACC LIMITED | Manufacturing | Public Limited Company |
| ACCEL SOFTWARE & TECHNOLOGIES LTD CHENNAI | IT | Private |
| ACCEL SOFTWARE SOLUTIONS LIMITED | IT | Private |
| ACCENTURE | Engineering | Private |
| ACSYS SOFTWARE INDIA PVT LTD | IT | Private |
| ACT FIBERNET | IT | Private |
| ADHITYAA INFO MEDIA SOLUTION | Media | Private |
| ADITYA BIRLA NUVO LIMITED | IT | Private |
| ADROIT CORPORATE SERVICES PVT. LIMITED | IT | Private |
| AERO ENGINEERS | Engineering | Private |
| AERONAUTICAL DEVELOPMENT AGENCY | Engineering | Government Body |
| AGARAM INFOTECH PRIVATE LIMITED | IT | Private |
| AIP CONFERENCE PROCEEDINGS | Publishing and Printing | Private |
| AIRPORT AUTHORITY OF INDIA | Others | Public Sector Unit (PSU) |
| AIRPORT AUTHORITY OF INDIA CHENNAI | Transport | Public Sector Unit (PSU) |
| AJEL LIMITED | IT | Private |
| AKSHARA CONSTRUCTIONS | Engineering | Private |
| AL-TECH ENGINNERING WORKS | Manufacturing | Sole Proprietorship |
| ALANKIT ASSIGNMENTS LIMITED | IT | Private |
| ALL INDIA RADIO | Engineering | Government Body |
| AMAZON | Others | Private |
| AMAZON | IT | Private |
| AMITYSOFT TECHNOLOGIES PVT LTD | IT | Private |
| AMS CONSTRUCTIONS | Engineering | Sole Proprietorship |
| ANDREW YULE & CO LTD | Manufacturing | Private |
| ANGLE AND SQUARE CONSTRUCTION COMPANY | Engineering | Private |
| ANNA UNIVERSITY | Engineering | Government Body |
| ANNA UNIVERSITY | Education | Government Body |
| ANNA UNIVERSITY | Education | Government Body |
| ARUL INDUSTRIES | Manufacturing | Sole Proprietorship |
| ARUN CONSTRUCTIONS | Engineering | Private |
| ASEA BROWN BOVERI | Engineering | Private |
| ASHOK LEYLAND | Automobiles | Private |
| ATOS | IT | Private |
| AWATA SOFTWARE SYSTEM | IT | Private |
| BANGKOK UNIVERSITY | Education | Private |
| BAROLA TECHNOLOGIES | Engineering | Private |
| BGR CONSTRUCTIONS.PVT.LTD | Engineering | Private |
| BGR ENERGY SYSTEM | Engineering | Private |
| BHARAT ELECTRICALS | Engineering | Private |
| BHARAT ELECTRONICS LIMITED | Engineering | Public Limited Company |
| BHARI INFORMATION TECHNOLOGY SYSTEMS PVT. LTD | IT | Private |
| BI WORLD WIDE | IT | Private |
| BIGSHARE SERVICES PVT. LIMITED | IT | Private |
| BLU IRIS | Hospitality | Private |
| BNP PARIBAS | IT | Public Limited Company |
| BNP PARIBAS INDIA SOLUTIONS | Others | Private |
| BNY MELLON TECHNOLOGY | Engineering | Private |
| BOOKWELL DELHI | Education | Private |
| BOT LAB | Education | Private |
| BOTREE SOFTWARE INTERNATIONAL PVT LTD | IT | Private |
| BSNL | Telecom | Government Body |
| BSNL | Others | Government Body |
| BSNL | IT | Government Body |
| BSNL LTD | Telecom | Public |
| BTS CONSULTANCY SERVICES PRIVATE LIMITED | IT | Private |
| BUSINESS GREEN | Agriculture | Private |
| CADD SCHOOL | Design | Private |
| CAMEO CORPORATE SERVICES LTD | Others | Private |
| CAPARA ENGINEERING PVT LTD | Automobiles | Private |
| CASA GRANDE PVT LTD | Engineering | Private |
| CAVINKARE PVT LTD | FMCG | Private |
| CED | IT | Private |
| CENTRE FOR ENTERPRENEURSHIP DEVELOPMENT | Engineering | Association |
| CENTRUM DIRECT LIMITED | BFSI | Private |
| CG MAERSK INFORMATION TECHNOLOGIES PVT. LTD. | IT | Private |
| CHENNAI FORD | Automobiles | Private |
| CHENNAI METRO RAIL | Engineering | Private |
| CHENNAI METRO RAIL LIMITED | Engineering | Government Body |
| CHENNAI PORT | Engineering | Government Body |
| CHENNAI PORT TRUST | Transport | Government Body |
| CHENNAI PORT TRUST | Engineering | Government Body |
| CHENNAI PORT TRUST | Engineering | Government Body |
| CHENNAI PORT TRUST | Others | Government Body |
| CHETTINAD MORIMURA SEMICONDUCTOR MATERIAL PVT LTD | Manufacturing | Private |
| CIRCOR FLOW TECHNOLOGIES INDIA PVT. LTD | IT | Private |
| CISCO | Engineering | Private |
| CITRIX SYSTEMS INDIA PVT. LTD. | IT | Private |
| CLRI | Engineering | Public Limited Company |
| CLRI | Education | Government Body |
| CLUSTER COMPUTING | Publishing and Printing | Private |
| CMRL | Engineering | Government Body |
| CNS SYSTEM, PUNE | Telecom | Private |
| CODE BIND TECHNOLOGIES | IT | Private |
| CODE BIND TECHNOLOGIES | IT | Private |
| CODEBIND TECHNOLOGIES | IT | Private |
| COGNIZANT | IT | Private |
| COVANSYS INDIA LTD. | IT | Private |
| CSN SYSTEMS | Consulting | Cooperative |
| CSS CORP | IT | Private |
| CTS | IT | Private |
| CTS | IT | Private |
| CYBERNET - SLASH SUPPORT | IT | Private |
| DAIMLER | Automobiles | Private |
| DALMIA CEMENTS | Manufacturing | Private |
| DATA SCIENCE LAB | IT | Private |
| DE GRUTER | Education | Private |
| DEFORAY TECHNOLOGIES PVT. LTD | IT | Private |
| DEPARTMENT OF SCIENCE & TECHNOLOGY | Education | Private |
| DEPARTMENT OF SCIENCE & TECHNOLOGY | Engineering | Government Body |
| DEPARTMENT OF SCIENCE & TECHNOLOGY | Others | Government Body |
| DIAMOND ENGINEERING (CHENNAI) PVT. LTD. | Manufacturing | Private |
| DIGITAL SHARK TECHNOLOGY | Engineering | Public Limited Company |
| DOORDHARSAN | Media | Government Body |
| DTE | Education | Government Body |
| E -YANTRA | Others | Private |
| ELSEVIER | Publishing and Printing | Private |
| ELSEVIER PUBLISHING SERVICES | Publishing and Printing | Private |
| EMBED UR | Engineering | Private |
| EMBED UR | Manufacturing | Private |
| EMC2 | IT | Private |
| EMERSON | Engineering | Private |
| EMERSON NETWORK POWER LTD. | Manufacturing | Public Limited |
| ENCORE SOFTWARE SERVICES | IT | Private |
| ENNORE THERMAL POWER STATION | Energy | Government Body |
| EPR LABS | IT | Private |
| EPR LABS | Education | Private |
| ETHNUS | IT | Private |
| ETHUNUS | Engineering | Private |
| FACE | Education | Private |
| FORD INDIA | Automobiles | Private |
| FOREVIEW TECHNOLOGIES | Engineering | Private |
| GISLEN SOFTWARE | IT | Private |
| GOODWIN INDUSTRIES | Engineering | Private |
| GRACE SOFT SOLUTIONS | IT | Private |
| GVR INFRA PROJECTS LIMITED | Engineering | Private |
| HAKUNA MATATA SOLUTIONS | IT | Private |
| HANNON SYSTEM PVT LTD | IT | Private |
| HANON SYSTEMS PVT LTD | Automobiles | Private |
| HARLAND CLARKE SOFTWARE INDIA PVT. LTD | IT | Public |
| HCL | IT | Private |
| HCL | Others | Private |
| HCL CAREER DEVELOPEMENT CENTER | IT | Private |
| HIGHWAY DEPARTMENT | Engineering | Government Body |
| HINDUSTAN COCA COLA BEVERAGE PVT LTD | FMCG | Private |
| HITECH PVT SOLUTION | IT | Private |
| HOURGLASS IT - WEB DESIGN COMPANY | IT | Private |
| HP | IT | Private |
| HWASHIN AUTOMOTIVE PVT LTD | Automobiles | Private |
| IBERIS SOFTWARE SOLUTIONS | IT | Private |
| IBM INDIA | IT | Private |
| ICSNS 2018 - PROCEEDINGS OF IEEE INTERNATIONAL CONFERENCE ON SOFT-COMPUTING AND NETWORK SECURITY | Publishing and Printing | Private |
| ICT ACADEMY | Education | Public Limited Company |
| ICT ACADEMY | Engineering | Private |
| ICTACT | Education | Government Body |
| IEEE EXPLORER | Engineering | Private |
| IGCAR | Engineering | Government Body |
| IIT CHENNAI | Engineering | Private |
| IIT MADRAS | Education | Private |
| IMARTICUS | IT | Private |
| INAUTIX | Engineering | Private |
| INAUTIX | IT | Private |
| INAUTIX TECHNOLOGIES | IT | Private |
| INDERSCIENCE PUBLISHERS | Publishing and Printing | Private |
| INDIAN SOCIETY FOR NON DESTRUCTIVE TESTING | Engineering | Association |
| INDIUM SOFTWARE | IT | Private |
| INFINITE COMPUTER SOLUTIONS | IT | Private |
| INFOGRO TECHNOLOGIES | IT | Private |
| INFOSYS | Engineering | Private |
| INFOSYS | IT | Private |
| INNOVATION LAB | Education | Private |
| INNOVATIVE ENGINEERING SOLUTIONS | Engineering | Private |
| INNOVATIVE ENGINEERING SOLUTIONS | IT | Private |
| INTEGRAL COACH FACTORY | Manufacturing | Public Sector Unit (PSU) |
| INTEGRAL COACH FACTORY | Manufacturing | Government Body |
| INTELLECT DESIGN ARENA | IT | Private |
| INTERNATIONAL INNOVATION | Engineering | Private |
| INTERNATIONAL JOURNAL OF ADVANCE RESEARCH IN COMPUTER SCIENCE & SOFTWARE ENGINEERING | IT | Association |
| INTERNATIONAL JOURNAL OF APPLIED ENGINEERING RESEARCH | Engineering | Government Body |
| INTERNATIONAL JOURNAL OF CREATIVE RESEARCH THOUGHTS | Others | Private |
| INTERNATIONAL JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING | Others | Private |
| INTERNATIONAL JOURNAL OF EMERGING TECHNOLOGIES AND ENGINEERING | Publishing and Printing | Private |
| INTERNATIONAL JOURNAL OF ENGINEERING AND TECHNOLOGY | Publishing and Printing | Private |
| INTERNATIONAL JOURNAL OF ENGINEERING AND ADVANCED TECHNOLOGY | Publishing and Printing | Private |
| INTERNATIONAL JOURNAL OF ENGINEERING AND TECHNOLOGY | Education | Private |
| INTERNATIONAL JOURNAL OF INNOVATIONS IN ENGINEERING AND TECHNOLOGY | Education | Private |
| INTERNATIONAL JOURNAL OF INNOVATIONS IN ENGINEERING AND TECHNOLOGY | Publishing and Printing | Private |
| INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH IN TECHNOLOGY | Education | Private |
| INTERNATIONAL JOURNAL OF INNOVATIVE TECHNOLOGY AND EXPLORING ENGINEERING | Publishing and Printing | Private |
| INTERNATIONAL JOURNAL OF MACHINING AND MACHINABILITY OF MATERIALS | Education | Private |
| INTERNATIONAL JOURNAL OF MATERIAL TODAY PROCEEDINGS | Education | Public |
| INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING & TECHNOLOGY | Publishing and Printing | Private |
| INTERNATIONAL JOURNAL OF POWER ELECTRONICS AND DRIVE SYSTEM | Education | Private |
| INTERNATIONAL JOURNAL OF PURE AND APPLIED MATHEMATICS | Education | Private |
| INTERNATIONAL JOURNAL OF PURE AND APPLIED MATHEMATICS | Publishing and Printing | Private |
| INTERNATIONAL JOURNAL OF RECENT TECHNOLOGY AND ENGG. | Education | Private |
| INTERNATIONAL JOURNAL OF RECENT TECHNOLOGY AND ENGINEERING | Publishing and Printing | Private |
| INTERNATIONAL JOURNAL OF SCIENCE AND INNOVATIVE ENGINEERING & TECHNOLOGY (IJSIET) | Publishing and Printing | Private |
| INTERNATIONAL JOURNAL OF SCIENCE AND RESEARCH | Publishing and Printing | Private |
| INTERNATIONAL JOURNAL OF SCIENCE AND RESEARCH (IJSR) | Education | Private |
| INTERNATIONAL JOURNAL OF SCIENCE, ENGINEERING AND TECHNOLOGY RESEARCH (IJSETR) | Others | Private |
| INTERNATIONAL JOURNAL OF SIMULATION SYSTEMS, SCIENCE & TECHNOLOGY | Publishing and Printing | Private |
| IOP PUBLISHING | Education | Private |
| IPR | Engineering | Government Body |
| IRTT | Engineering | Government Body |
| ISF INDUSTRIES PVT.LTD., | Manufacturing | Private |
| ISIEINDIA | Engineering | Private |
| ISOFT PVT LTD | IT | Private |
| ISOFT SOLUTION | Engineering | Private |
| ISRO | Engineering | Government Body |
| ITECH SOFTWARE SOLUSION | IT | Private |
| ITECH SOLUITONS | IT | Private |
| JAIN HOUSING & CONSTRUCTION LTD,, | Engineering | Private |
| JEEVAN GNANODHAYA SCHOOL | Education | Private |
| JK ENTERPRISES | Engineering | Private |
| JM MACHINE TOOLS | Engineering | Private |
| JOLARPET RAILWAY STATION | Transport | Government Body |
| JOURNAL OF ADVANCED RESEARCH IN DYNAMICAL AND CONTROL SYSTEMS | Engineering | Private |
| JOURNAL OF EMERGING TECHNOLOGIES AND INNOVATIVE RESEARCH | Education | Private |
| JOURNAL OF PHYSICS CONFERENCE SERIES | Publishing and Printing | Private |
| JOURNAL OF STRUCTURAL ENGINEERING | Engineering | Government Body |
| JP INFOTECH | IT | Private |
| JRA ANALYTICS | IT | Private |
| JUST DIAL | IT | Public Limited Company |
| K.S.V. CONSTRUCTIONS | Engineering | Private |
| KAASHIV | Engineering | Private |
| KAASHIV INFO TECH | Engineering | Private |
| KAASHIV INFO TECH | IT | Private |
| KALAIVANI ELECTRICALS | Engineering | Private |
| KALAIVANI ENGINEERING COLLEGE | Education | Private |
| KAROMI TECHNOLOGY | IT | Private |
| KARPARA PROJECT ENGINEERING PVT LTD | Manufacturing | Private |
| KASHIV INFO TECH | IT | Private |
| KELLER GROUND ENGINEERING INDIA. | Engineering | Private |
| KILPAUK WATER TREATMENT PLANT | Engineering | Government Body |
| KLOT INDUSTRIES | Engineering | Sole Proprietorship |
| L & T SHIP BUILDING | Manufacturing | Private |
| L&T | IT | Private |
| LAPSYS INFOTECH PVT LTD | IT | Private |
| LARSEN TOUBRO LIMITED | Engineering | Private |
| LARSEN & TOUBRO | Engineering | Public Limited Company |
| LEO HOUSING PRIVATE LIMITED | Real Estate | Private |
| LIVEWIRE | Engineering | Private |
| MAATRAM SOFTWARE SOLUTION | IT | Private |
| MAESTRO STEEL DETAILING INC | Engineering | Private |
| MAHINDRA & MAHINDRA | Engineering | Private |
| MAHINDRA & MAHINDRA FINANCIAL SERVICES LIMITED | BFSI | Private |
| MAVERIC SYSTEMS | IT | Private |
| MAXVAL | IT | Private |
| MERCURY FOUNDATIONS | Engineering | Private |
| METROPOLITAN TRANSPORT CORPORATION (CHENNAI) LTD. | Automobiles | Public Limited Company |
| METTUR THERMAL POWER PLANT | Energy | Public Limited Company |
| MIND TREE | IT | Private |
| MOBIUS | Engineering | Private |
| MUTHUKUMARAN CONMSTRUCTIONS | Engineering | Private |
| NARL | Engineering | Public |
| NATIONAL HOSPITAL | Healthcare | Private |
| NATIONAL SMALL INDUSTIRES CORPORATION | Engineering | Government Body |
| NATIONAL SMALL INDUSTRIES CORPORATAION | Others | Government Body |
| NATIONAL SMALL INDUSTRIES CORPORATION | Manufacturing | Public Central |
| NAVIN HOUSINGS & PROPERTIES | Engineering | Private |
| NBCC LIMITED | Engineering | Private |
| NCTPS | Power | Government Body |
| NEWGEN | IT | Private |
| NEYES TECHNOLOGIES | IT | Private |
| NEYVELI POWER COMPANY LIMITED | Power | Government Body |
| NICOLA EDUCATIONAL AND RESEARCH INSTITUTE | Education | Association |
| NIIT | Others | Private |
| NIMBLE MIND TECHNOLOGIES | IT | Private |
| NIOT,CHENNAI | Engineering | Public Sector Unit (PSU) |
| NISCAIRCSIR INDIA | Education | Private |
| NIT TRICHY | Education | Government Body |
| NITTTR | Education | Government Body |
| NLC | Energy | Public Central |
| NLC | Engineering | Government Body |
| NLC | Power | Government Body |
| NLC INDIA | Mining | Public Limited |
| NLC INDIA LIMITED | Energy | Public Sector Unit (PSU) |
| NTT DATA | IT | Private |
| NUCLEAR POWER CO-OPERATION OF INDIA PVT LTD | Energy | Government Body |
| ODYSSEY TECHNOLOGIES | IT | Private |
| OG SOFTWARE SOLUTIONS INDIA PVT LTD | IT | Private |
| ONE YES TECHNOLOGIES | IT | Private |
| ONEYES TECHNOLOGIES | IT | Private |
| ONGC | Energy | Government Body |
| ONGC | Energy | Public Sector Unit (PSU) |
| ORACLE ACADEMY | IT | Private |
| P2B ENGINEERS | Engineering | Private |
| PACE POWER SYSTEM | Engineering | Private |
| PALS INDIA PVT LTD. | Education | Private |
| PANTECH EDUCATION PRIVATE LTD,CHENNAI | Engineering | Private |
| PANTECH PRO ED PVT LTD | Engineering | Private |
| PANTECH SOLUTIONS | Engineering | Private |
| PEARSON | IT | Private |
| PETROFAC | Mining | Private |
| PLC TECHNOLOGIES | Engineering | Private |
| POLARIS | IT | Private |
| POWER GRID CORPORATION | Engineering | Government Body |
| PRADEEP STAINLESS INDIA PVT LTD | Manufacturing | Private |
| PRAKASH INDUSTRIES LIMITED | IT | Private |
| PRASAR BHARATHI | Others | Public Sector Unit (PSU) |
| PROCEEDINGS OF THE 2018 INTERNATIONAL CONFERENCE ON COMMUNICATION COMPUTING AND INTERNET OF THINGS | Publishing and Printing | Private |
| PRODAPT | IT | Private |
| PRODAPT SOLUTIONS PRIVATE LIMITED | IT | Private |
| PROFESSIONAL ELEVATORS | Engineering | Private |
| PUBLIC WORKS DEPARTMENT | Engineering | Government Body |
| PUBLIC WORKS DEPARTMENT | Engineering | Government Body |
| PURVA SHAREGISTRY (INDIA) PRIVATE LIMITED | IT | Private |
| PYROFERUS TECHNOLOGIES | IT | Private |
| PYROFERUS TECHNOLOGIES | IT | Private |
| Q SPIDERS | IT | Private |
| RAMCO SYSTEMS | IT | Private |
| RANI HI-TECH ENGINEERINGDD | Engineering | Private |
| RASCI INSTRUMENTS | Engineering | Private |
| RCMC SHARE REGISTRY PVT LIMITED | IT | Private |
| RED HAT | Education | Private |
| RED HAT | IT | Private |
| RED HAT ACADEMY | Education | Private |
| REGINOL TELECOM TRAINING CENTRE | Engineering | Public |
| RELIANCE PETROCHEMICAL INDUSTRY LIMITED (IPCL) NAGOTHANE | Chemicals | Private |
| RELIANCE REATIL LIMITED | Food Products and Beverages | Private |
| RENAULT NISSAN | Automobiles | Private |
| RENAULT NISSAN | Automobiles | Public Limited Company |
| RENAULT NISSAN TECHNOLOGY & BUSINESS CENTRE INDIA PRIVATE LIMIED | Manufacturing | Private |
| RESEARCH CENTRE IMARAT | Engineering | Government Body |
| RETECH SOLUTION PVT LTD | IT | Private |
| RETECH SOLUTIONS PVT LTD | Engineering | Private |
| RETECH SOLUTIONS PVT LTD | Engineering | Private |
| RETECH SOLUTIONS PVT LTD | Engineering | Sole Proprietorship |
| RETECH SOLUTIONS PVT.LTD | IT | Private |
| REVO TECHNOLIGES AND ENTERPRISES | Machinery and Equipment | Sole Proprietorship |
| REVO TECHNOLOGIES | Manufacturing | Sole Proprietorship |
| REVO TECHNOLOGIES AND ENTERPRISES | Machinery and Equipment | Sole Proprietorship |
| RISHABH ENTERPRISES | Engineering | Private |
| ROYAL ENFIELD | Automobiles | Private |
| RS WINDTECH PRIVATE LTD | Energy | Private |
| RSN INFOTECH PVT LTD | IT | Private |
| S. K. INFOSOLUTIONS PRIVATE LIMITED | IT | Cooperative |
| SAAI RAJALI CONSTRUCTION PRIVATE LIMITED | Engineering | Private |
| SAGE PUBLICATION | Publishing and Printing | Private |
| SAKTHI TRANSFORMERS | Engineering | Private |
| SALESFORCE | IT | Private |
| SALESFORCE.COM | IT | Private |
| SANDS | Engineering | Private |
| SANDVIK COROMANT INDIA | Engineering | Private |
| SANMINA | Engineering | Private |
| SAPTHAGIRI EDUCATION TRUST | Education | Private |
| SATHANUR DAM | Engineering | Government Body |
| SATHISH DHAWAN SPACE CENTRE | Engineering | Government Body |
| SATHLOKHAR SYNERGYS PVT LTD | Engineering | Private |
| SATISH DAWAN SPACE CENTER SHAR | Engineering | Public Limited Company |
| SCHWING SETTER INDIA (PVT) LTD | Engineering | Private |
| SERC | Engineering | Government Body |
| SEWAGE TREATMENT PLANT | Engineering | Government Body |
| SFP INDIA PVT.LTD. | Logistics | Private |
| SH BUILDERZ | Engineering | Private |
| SHAKTHI TRANSFORMER | Engineering | Private |
| SHANKAR NETHRALAYA | Healthcare | Private |
| SHRI NDA TECHNOLOGY | Manufacturing | Private |
| SIFI TECHNOLOGIES | Engineering | Private |
| SIFY TECHNOLOGIES LTD. | IT | Private |
| SIGNALS & SYSTEMS (INDIA) P LTD (SANDS) | Manufacturing | Private |
| SKILL LINC | Engineering | Private |
| SKY HOME ENTERPRISES | Engineering | Private |
| SLN TECHNOLOGIES | IT | Public |
| SOLAR WARRIORS | Engineering | Public Sector Unit (PSU) |
| SOUTHERN RAILWAY | Transport | Government Body |
| SOUTHERN RAILWAYS | Engineering | Government Body |
| SPORA STERIA | IT | Private |
| SPRINGER | Publishing and Printing | Institution |
| SRI RAM BUILDERS | Engineering | Private |
| SRI SAIRAM ENGINEERING COLLEGE | Education | Private |
| SRI SAIRAM INSTITUTE OF TECHNOLOGY | Engineering | Private |
| SSN COLLEGE OF ENGINEERING | Education | Private |
| STIGMATA TECHNO SOLUTIONS LLP | Computer Machinery and Equipme | Private |
| SUNOIDA | Others | Private |
| SUNRAYS TECHNOLOGIES | IT | Private |
| SURYA INFORMATICS | IT | Private |
| SURYA INFORMATICS SOLUTIONS PRIVATE LIMITED, CHENNAI | IT | Private |
| SUTHERLAND | IT | Private |
| SWITCHING TECHNOLOGIES GUNTHER LIMITED | Engineering | Private |
| SYNTEL | IT | Private |
| SYNTEL | Others | Private |
| SYS ARC INFORMATIX PRIVATE LIMITEDINDI | IT | Private |
| SYSVINE TECHNOLOGIES PVT LTD | IT | Private |
| TAFE | Automobiles | Private |
| TAMIL NADU CIVIL ENGG. ASSOCIATION COMPANY, CHENNAI | Engineering | Private |
| TAMIL NADU ELECTRIC CITY BOARD | Energy | Public |
| TAMILNADU CEMENTS CORPORATION LTD | Engineering | Public State |
| TANGEDCO | Power | Public Limited Company |
| TATA CONSULTANCY SERVICES, LUCKNOW | IT | Private |
| TATA CONSULTANCY SERVICE | IT | Private |
| TATA CONSULTANCY SERVICE | IT | Public Limited Company |
| TAYLOR & FRANCIS | Publishing and Printing | Private |
| TCS | IT | Private |
| TCS | Engineering | Private |
| TCS | Engineering | Private |
| TECHNOCRAT | Engineering | Private |
| TECNOCRAT AUTOMATION SOLUTION PVT LTD | Education | Private |
| TEXRON PPS | Manufacturing | Private |
| THE JOURNAL OF SUPER COMPUTING | Education | Private |
| THERMAL ENERGY SYSTEMS | Energy | Private |
| THERMAL POWER STATION - ENNORE | Power | Government Body |
| TICKETGOOSE | IT | Private |
| TORRY HARRIS | IT | Private |
| TRANE CO. | Engineering | Private |
| TRESELLE SOFTWARE PRIVATE LIMITED | IT | Private |
| TVS GROUP OF COMPANIES | Automobiles | Private |
| TVS NEXT PVT LTD | Others | Private |
| UNIBROS TECHNOLOGIES | IT | Private |
| UNIPHORE SOFTWARE SYSTEMS | Engineering | Private |
| UNIPHORE SOFTWARE SYSTEMS PVT LTD | Others | Private |
| UNIQ | IT | Private |
| UNIQ TECHNOLOGIES | IT | Private |
| UNIQ TECHNOLOGIES | Engineering | Private |
| UNIQ TECHNOLOGIES | IT | Private |
| UNIQUE TECHNOLOGIES | IT | Private |
| UNIVERSITY OF TEXAS | Education | Private |
| UNIX TECHNOLOGIES | IT | Private |
| UPSC | Education | Government Body |
| URJANET | IT | Private |
| V2H ENGINEERING | Manufacturing | Private |
| VAIBHAV CONSTRUCTIONS | Engineering | Private |
| VALLIAMMAI ENGINEERING COLLEGE | Education | Private |
| VECTRA TECHNOSOFT PVT LTD | IT | Private |
| VEDANTU INDIA PVT LTD | Engineering | Private |
| VELLORE INSTITUTE OF TECHNOLOGY | Engineering | Private |
| VEMBU TECHNOLOGIES PVT LTD | IT | Private |
| VI MICRO SYSTEM, CHENNAI | Engineering | Private |
| VI MICROSYSTEMS | Engineering | Private |
| VICI ENGINNEERING AND CONSULTANTS | Engineering | Private |
| VIMLEEZ SOFTWARE PVT.LTD. | IT | Private |
| VIRTUA SOLUTION | IT | Private |
| VIVEKANANDA BUILDERS | Engineering | Private |
| VOLTECH ENGINEERS PVT LTD | Engineering | Private |
| VOLTECH GROUP OF COMPANIES | Engineering | Private |
| VORTEX ENGINEERING | IT | Private |
| WEBBOOMBAA | IT | Private |
| WIPRO | IT | Private |
| WIPRO TECHNOLOGIES LTD | IT | Public Limited |
| WOODHEAD PUBLISHING | Education | Private |
| XL SOFTECH SYSTEMS LIMITED | IT | Private |
| YAHOO | IT | Private |
| ZOHO | IT | Private |
| ZOHO | IT | Institution |
| ZOOM RX | IT | Private |
