novelWriter is a markdown-like text editor designed for writing novels and larger projects of many smaller plain text documents. It uses its own flavour of markdown that supports a meta data syntax for comments, synopsis and cross-referencing between files. It's designed to be a simple text editor which allows for easy organisation of text files and notes, built on plain text files for robustness.
Source: github.com/vkbo/novelWriter
Website: novelwriter.io
Docs: docs.novelwriter.io
Subtle is a simple editor and OCR wrapper for subtitles. It was created to convert PGS subtitles to SRT format for MKV files.
The project is currently in initial development, but is in a usable state on Linux.
Source: github.com/vkbo/Subtle