Apparently Append To Files is a file manager, and in fact it is, but it could also be considered as an office utility that allows you to process and edit all kinds of files.
Well, with Append To Files you can rename any file (adding new letters at the beginning or end of the name), but not only to the files but also to the names of the folders; just as the opposite process allows, that is, remove characters from their names.
Even Append To Files allows modifications to be made inside each of the files, since you can insert new lines of text inside the files.
Also with Append To Files you can filter the files by different criteria: date, size, etc.
You can free download Append To Files and safe install the latest trial or new full version for Windows 10 (x32, 64 bit, 86) from the official site.
Devices: Desktop PC, Laptop (ASUS, HP, DELL, Acer, Lenovo, MSI), Ultrabook
OS: Professional, Enterprise, Education, Home Edition, versions: 1507, 1511, 1607, 1703, 1709, 1803, 1809