Alternatives to Nektony VSD Viewer

Preview, edit and convert Visio drawings

Viewer for electronic invoices

Native document editor

Quick Look generator for Markdown files

Markdown previewer with bundled Quick Look extension

Visually compare folders and files

Waterfall-style image viewer

Font viewer for various font formats

Data analysis and visualization application

PDF reader

Markdown viewer and editor

Document reader to open and view Windows-based files