I have always used MOVE, if affiliated with a uni you could get a free academic license. Otherwise, you could look at Rick Allmendinger's FaultFold program. You can't restore sections but you can forward model your section to replicate your deformed state.
Best available is Move that is used extensively during PhD. Andino3D is quite better but not sure know if it is available in english? and structure solver is best if you want to restore seismic section. They offer trial or academic licenses...
The most simplest thing i did during my master's was using coral draw for line length restoration when MOVE was not available. The process was making deformed section according to scale on paper and digitizing it in the coral draw with paper scale as a reference. Later i used properties of a particular horizon (line length) and drawing a line of same length in undeformed restored section for every respective fault block. With simple maths (reference scale conversion)you can calculate amount of shortening in the section and reduce errors in the interpretation.
With comparison to paper based section it was easy to create multiple copies of the same section and restoration. So basically you can play with it much better than manual section but not as much as in MOVE or other programme.
Alternatively, you can try the THRUSTPACK software or LOCACE software . Used by (Geruald et., al 2002) in developing the important stages of the structural progression of the HW of MBT was compared with that of the Salt Range and South Potwar basin, probably this will help.
Dynel 2D offers geomechanical rock properties input, including computation of the step-wise strain-based decompaction. For a soft-rock sedimentary basin is the choice #1, in particular if you have an extensional setting (your case). You will be available to compute the amount of extension accounting the regional tensor...
I came across a new tool: I have not tried it yet. I post it here because it is a Python package.
[Open-source] Python package for 3D structural geological modeling
GemPy is a free and open-source geological modeling software that supports implicit and stochastic modeling. It can create sophisticated 3D geological models of folded structures, fault networks, and unconformities.
Andino 3D (www.andino3d.com.ar) has academic/research-type license among its possibilities. To obtain the corresponding software license you must download the Andino 3D installer from https://www.andino3d.com.ar/en/downloads/ selecting the version 2.0.1.2. Once downloaded proceed to install it, once the software is finished it will open a license request dialog box where you must complete the corresponding form and select the "research or academic" option in the "objective" box, once your request has been sent, we will manage and send the corresponding licenses through our system. And that´s all!
If you have any question please contact us through our website or send an email to [email protected]
You can also contact Ernesto Cristallini our software development leader
Beicip-Franlab have some very good software. Move is okay for fault restoration, but it doesn't do a great job at thermal restoration, particularly in basins where thermal subsidence was laterally variable. KronosFlow looks like it might do a better job.