| The 2003 pulver100 Edition | Last update: September 14, 2003 | |
| Acme Packet | Network Equipment | |
| Actelis Networks | Network Equipment | |
| ActiveBuddy | Software Based Solutions | |
| Akonix | Service Provider | |
| Applied Messaging | Software Based Solutions | |
| Ascendent Telecom | Software Based Solutions | |
| Avotus | Service Provider | |
| BayPackets | Software Based Solutions | |
| Blueslice Networks | Network Equipment | |
| Brecis Communications | Chip Sets | |
| Broadsoft | Applications | |
| Cbeyond Communications | Service Provider | |
| Celtic Communications | Service Provider | |
| Cirpack | Network Equipment | |
| CITEL Technologies | Network Equipment | |
| ComMatch | Network Equipment | |
| Commetrex | Network Equipment | |
| ConceptWave | Software Based Solutions | |
| Convedia | Network Equipment | |
| Cosmocom | Network Equipment | |
| Digital Agent | Service Provider | |
| Digital Ingenuity | Service Provider | |
| eDial | Applications | |
| Estech Systems | Network Equipment | |
| FaceTime | Software Based Solutions | |
| Gallery IP Telephony | Software Based Solutions | |
| General Bandwidth | Network Equipment | |
| GoBeam | Service Provider | |
| Groove Networks | Software Based Solutions | |
| Hotsip | Software Based Solutions | |
| i3Micro Network | Equipment | |
| Indigo Software | Software Based Solutions | |
| Ingate | Hardware Based Solutions | |
| Interphos | Premise Equipment | |
| Intertex | Premise Equipment | |
| IP Unity | Network Equipment | |
| IPeria | Applications | |
| Jasomi Networks | Network Equipment | |
| Kagoor | Software Based Solutions | |
| LivePerson | Service Provider | |
| LongBoard | Software Based Solutions | |
| M5 Networks | Service Provider | |
| Marratech | Software Based Solutions | |
| Masergy Communications | Service Provider | |
| Media-Streams | Premise Equipment | |
| Metaswitch | Network Equipment | |
| Microsource | Service Provider | |
| Mitel | Network Equipment | |
| Natural Convergence | Software Based Solutions | |
| Net Insight | Network Equipment | |
| Netcentrex | Network Equipment | |
| Netrake | Network Equipment | |
| Neustar | ||
| NexTone Communications | Network Equipment | |
| Nutek India | Service Provider | |
| Octasic | Chip Sets | |
| OnRelay | Software Based Solutions | |
| Operax | Software Based Solutions | |
| OZ | Software Based Solutions | |
| Packet Front | Network Equipment | |
| Pactolus | Software Based Solutions | |
| PalTalk | Service Provider | |
| PresenceWorks | Software Based Solutions | |
| Protus IP Solutions | Software Based Solutions | |
| Psytechnics | Software Based Solutions | |
| Quintum Technologies | Network Equipment | |
| Ridgeway Systems | Software Based Solutions | |
| SeeStorm | Software Based Solutions | |
| sentitO | Network Equipment | |
| SnowShore Networks | Network Equipment | |
| Sockeye Networks | Software Based Solutions | |
| Sonexis | Applications | |
| SS8 Networks | Software Based Solutions | |
| Straticom | Premise Equipment | |
| Surf Communications | Software Based Solutions | |
| SWYX | Network Equipment | |
| Sylantro | Applications | |
| Syndeo | Software Based Solutions | |
| tek Vizion | Software Based Solutions | |
| Telchemy | Software Based Solutions | |
| Telesoft | Nework Equipment | |
| TeleSym | Software Based Solutions | |
| Telesynthesis | Network Equipment | |
| Telica | Network Equipment | |
| Tellme Networks | Service Provider | |
| Telstrat | Network Equipment | |
| ThinkEngine Networks | Network Equipment | |
| TransNexus | Software Based Solutions | |
| Trinity Convergence | Software Based Solutions | |
| Ubiquity Software | Software Based Solutions | |
| Unimax | Software Based Solutions | |
| Vernier Networks | Network Equipment | |
| VocalData | Applications | |
| Vonage | Service Provider | |
| Voxpath Networks | Applications | |
| Voyant Technologies | Applications | |
| Webmessenger | Software Based Solutions | |
| Wintegra | Chip Set | |
| Xten Networks | Software Based Solutions | |
| Zion Software | Software Based Solutions | |
| Zultys Technologies | Network Equipment
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