This means that all the changes are saved on a separate file (called sidecar file) and you can always go back to your original photo. Opensource does not mean it is not reliable, just think that most of the internet is running over Linux which is Opensource too. In travel photography, this possibility can open new horizons without the need to buy new powerful laptops Once you are back at home, you will be able to move your work to your local more powerful Windows or Mac computer. What this means to you is that you can even think to use darktable on different platforms, for example on an old laptop with Linux when you travel.
2 How to organise your photos in darktable – Lightroom View.
1 A Quick darktable Tutorial – in a nutshell.