tejpWriter (pronounced “typewriter”) is an open source text editor with a deep feature set. It can be used to create and edit plain text or rich text files in a broad variety of formats, including full HTML support.

Nearly every aspect of ...

zdocm is a lightweight document editor. It is open source, and the source is included.

I think there must be a relation between this and zdocj, but neither project's readme seems to mention the other.