I've worked with Opsview for less than a year.

I have been using Opsview for eight years.

I have been using Opsview for two years. So, my company uses the product, and we are a customer of the solution. Also, I don't remember the version of the solution I am using.

I have used it for almost a year now.

I have been using Opsview for four years now. 

We've used it for three years.

We've used it for about two years.

I have been using this solution for three years. 

I've used it for 17 months.

I've been using it for over 10 years.

I've used it for two years.

I was using it between mid 2012 and the beginning of 2014. The foundation and the architecture haven't changed much since then. I worked with Opsview before the pro version had more features than the free community edition (e.g. Opsview Core 4). It was always running with Ubuntu 12.04.

We've had it now for seven or eight years.

We started with Opsview community (which no longer exists), so overall we have been using the Opsview platform for five years. It has been our only monitoring system in production for more than three years.

I have used this solution for two years.

I've been using it for 30 months.

We have been using Opsview Enterprise for approximately four months. Prior to that we were running an earlier version called Opsview Core since 2012.

We've been using since December 2015.

We've used it for close to six years.

I've been using it for three years; however, our organization has been using it for over five years.

I've been using it for seven months.

I have used it for 5+ years.