dpm's General Purpose Editor for OpenVMS
Mike Hsu and I wrote this years ago, and by now I'm so used to it
I keep using it even though I haven't "worked" on VMS since the '90s.
Download this zipped collection of source and executables
I found years ago and you're all set . . . installation is quick and simple.
There is no documentation other than the comments in the "keys" file,
so good luck.