These are part files actually. These are nothing but parts of a single file. They can be zipped files or iso files, but when they are split up they generate files with numbered extension like .001, .002 and so on. This actually indicates the number of parts the original file was split up into. Once you have all the files, you can use a file joiner to join them and retrieve the original file. The purpose of using a splitter might be portability. Sometimes, transferring a big file size might not be possible but with these kinds of file types, you will be able to transfer them quite easily.
When you install one of the applications from the list of programs that you found here, you should be able to open or edit the file with the 001 extension without any issue. However, if you still have problems with this, you may use the option of 001 file conversion to a different format.
We hope we helped you solve the problem with the 001 file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.
There can be more reasons which determine that you are not able to open the 001 file (apart from the lack of the proper application installed).
First - the 001 file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the 001 file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the 001 file should be solved.
Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the 001 file has not been completed and it cannot be opened properly).
If you have additional information about the 001 file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on 001 file.