Nessus

Most i liked about this product is that its designed to be user friendly ,making it usable for both experienced and intermediate who are less familiar with vulnerabilities and next important is their frequent updates system which helps in making the security system more effective

1. Scanning time is bit high
2. Sometimes false positives
3.Cost factor

Administrator can simply use predefined policy and easy to apply related product as a template.
Also the reporting is 99.99% accuracy and easy to understand and easy to find a solutions.

When we define a bulk scan, Nessus tool is getting more Computer/Server resources.

Does what it is supposed to. Provides a good overview of vulnerabilities across systems for internal security assessments and audits. Easy to deploy MSI package

Support is something to be desired. During initial setup in our environment, there were several complications when attempting to connect machines to the tenable.io cloud and provide the client machines with updates. The support group couldn't provide necessary assistance and we ultimately left to troubleshoot on our own.

Nessus is still the industry leader in this arena, and the ability for the product to identify vulnerabilities accurately is still the high water mark to beat. You can be up and running in just a few minutes, and the ability to have recurring scans is a great way for this product to help you with your security program. The "Plugin Output" fields help greatly when trying to determine if tests are a false positive, and lends additional credence to your system administrators when you can show them exactly *why* something has been detected as a vulnerability.

There are no ways to track vulnerabilities or your efforts to monitor them over time; this truly is just a point-in-time view of your environment unless you upgrade to a much more expensive product.