There are so many apps re-inventing "append to clipboard" and "clipboard history".
That, along with ftp/sftp/scp/WebDav support, as well as 7zip and rar compression and decompression, should be bog-standard OS features by now.
Those features are not that hard to implement, certainly within the means of large companies / communities. They don't take much space or cause any inconvenience when not in use. Why the hell do we still ship OSes that don't have them is beyond me.