I've used the solution since 2013. I've used it for quite some time. 

I've been using this solution for nearly three years. 

I have been using it for three months. 

We have been using the solution for a customer for six to eight months.

I have been using the solution for a couple of years.

I have used OWASP quite a bit. I have dealt with this solution for quite a few years. My usage has not been constant, but it has been quite a while.

We are dealing with the most recent version.

I have been using the solution for two to three months.

I have been using the solution for four or five years. We got the information from the community that it is open-source software, so we are using it as part of the community. We are using the open-source version. It is not difficult to upgrade to the latest version.

I have been using this solution for roughly 12 months. I am using the latest freeware version that is available on the website.

We have used ZAP for more than six months.

I've been using the solution for roughly six months. I've used it on and off. However, I really started using it constantly over the last six months. 

I've been using the solution for five or six years at this point.

We have been using OWASP Zap for more than four years. 

We have been using this solution for approximately six years and are currently using the latest version.

I have been using OWASP Zap for four years. 

Five years.

I've been using this solution for about one year. 

I've been using this solution for the past few months. 

I've been using the solution for a while. I've used it at least over the last 12 months.

I have used this solution for around six to seven years.

I have been using OWASP Zap for approximately three months.

I've been using this solution for one year. 

We've been using this solution for three or four years. 

6 months

I have been working with OWASP Zap for about three months.