My company is currently looking to replace our current solution used for monitoring our web-based enterprise solutions for both up-time and performance. Please note this is not intended to be a network monitoring-type solution (internally we currently use Nagios). If anyone has a provider that they have had a positive experience with, it would be much appreciated.

Here is a list of our requirements:

• Must have a large number of probes/agents around the globe to be representative of our customer base
• Must have a flexible scripting capability to automate multi-step user actions
• 24 hour a day monitoring
• Flexible alerting system
• Report generation capability
• Mimic browser specific monitoring (optional, not a must-have)