I am an adjuster and a software developer, and I was a software developer long before I was an adjuster. I have been adjusting claims since 1995.
From what I read around here, your question has many answers.
Almost all estimating systems will print to a .pdf file. If you could retrieve your info from a .pdf, this could be your answer. So all estimating systems can "Export" to a .pdf.
Most of the larger players have electronic file transfer to send claims info and accept submitted claims. Each of those systems seems proprietary, and, as you would imagine, every one of those processes, "exports" the claims information. But I do not think this is what you are looking for either.
Simsol and Powerclaim, I believe, use XML to communicate with a Claims Management system. This information exchange is centered on the claims background information, I think. (And I'm sure someone will be along to correct me, if I am wrong). This is probably similar to what you are looking for, but you also want the estimate data.
As a software developer, I would recommend getting a copy of the client for the database engine that the programs use. I have yet to find a current program that will not allow access to their data this way. I also have yet to find a software vendor that will admit this, although I have never asked any of the insurance software guys. (I seem to have to do this for medical practices mostly, because the app crashed or they are switching apps and do not want to have to re-key all their data.) If you ask them, they mouth dire warnings of data loss cause you are an idiot and will wreck their precious data. But if you have the passwords, and the user usually has them since they are needed to run the apps. the data can usually be accessed. If you access the data as read-only, the potential for damage should be small. And you are only looking to read the data anyway.
I have never used Exacitmate, Simsol (except at a software show in 1992, bet things have changed since then), MS/B, Intregi-Claim, Powerclaim or any other windows based system, so the information I am relaying to you I have gathered by reading this site. I could be wrong, I've been wrong before. Just ask my wife.
The claims software I and my company use are MS Access based and developed in house. My Access systems export everthing about a claim, to include all the estimates, coverages, photo descriptions, everything. I am re-developing the system in VB.NET and SQL Server, as time allows and this will be the fifth generation of the software. I originally wrote the CJET Estimating system in DOS based Turbo Pascal back in 1988. All of my windows based system allow access to the data, either directly in Access for the Access systems, or with the SQL Server tools for the SQL systems.
If you have more questions and think I can help, email me at jgoodman@stormcentral.com.
Jeff Goodman
Good Man Adjusting
Goodman Enterprises