ITIL was created by, and is a trademark of, England's government, started in the 1980s to standardize IT management. It is a set of best practices for aligning the services IT provides with the needs of the organization. It is broad based, covering everything from availability and capacity management to change and incident management, in addition to application and IT operations management. It is known as the IT infrastructure library because it is composed of a set of books (the number of which has varied from five to 30 over the years). Over the last 30 years, it has become the most widely used framework for IT management in the world. While the UK government owns the standards, they have authorized partners that do education and training as well as certification. They have defined the certification tiers, but leave it to the accredited partners to develop the training and certification around that framework.
IT is a very fast-changing industry - what is hot today may be a tiny niche market in only a few years and things that few have heard of may be huge trends in the same timeframe. That having been said, many certifications have a long life span, by which we don't mean that the certification is good for many years before it expires, but rather that the certification has been around and will be around (as best as the future is predictable) for a long time. This does not imply that recertification on new versions and/or continuing education credits are not required to maintain certification, however. Predicting the future is always challenging, not the least a future in IT, but these certifications are good bets.
The top 10 certifications that meet this criterion (in no particular order), identified by Global Knowledge instructor John Hales, include the following. Note that the certifications are broad in terms of topics covered and are not all strictly IT administrator-based.