CNote is a fast and lightweight note/code editor, it can help you quickly create/edit notes or write code. it has all the important features you need in one place, With Live Html Preview, Python Code Execution, and more, you can find the changelog at the Github repo.
Indexmeister reads a variety of formats (.tex, .docx, .epub, and others) and suggests keywords for indexing. The included program Imbrowse provides a semi-automatic interface to rapidly add index tags to multi-file latex documents.