| Author | Stages | First | Second | Third | Fourth | Fifth |
| Gartner, 2000 | 4 | Web presence | Interaction | Transaction | Transformation |
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| UN, 200-2008 | 4 | Emerging presence | Enhanced | Interactive | Connected |
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| World Bank, 2002 | 3 | Publish | Interact | Transact |
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| Accenture, 2003 | 5 | Online presence | Basic capability | Service availability | Mature delivery | Service transformation |
| Reddick, 2004 | 2 | Cataloguing | Transaction |
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| Siau & Long, 2005 | 5 | Web presence | Interaction | Transaction | Transformation | E-democracy |
| Anderson & Henrikson, 2006 | 4 | Cultivation | Extension | Maturity | Revolution |
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| Mausavi, 2008 | 5 | Cataloguing | Interaction | Communication | Transaction | Integration |
| Lee, 2010 | 5 | Presenting | Assimilating | Reforming | Morphing | E-governance |