sequential (deprecated)

Install command: 
brew install --cask sequential

Name: Sequential

Displays folders and archives of images and PDF files

http://sequentialx.com/

Cask JSON API: /api/cask/sequential.json

Cask code: sequential.rb on GitHub

Current version: 2.1.2

Current version requires: macOS >= 10.11

sequential is built for Intel macOS and so requires Rosetta 2 to be installed.
You can install Rosetta 2 with:
    softwareupdate --install-rosetta --agree-to-license
Note that it is very difficult to remove Rosetta 2 once it is installed.

Analytics:

Installs (30 days)
sequential 7
Installs (90 days)
sequential 36
Installs (365 days)
sequential 156