aedit
Text Editor based on Intel ISIS-II aedit
...A couple of things have not been implemented, (a) other - a feature to hold two files in memory (b) error on saving detected, the original ISIS-II would reboot if you attempted to write to a read-only disk, so this part just never happened in the C version - sin of omission.
It has even run on UNIX Release 7 on a PDP-II emulator.