Firefox OS vs fman
When comparing Firefox OS vs fman, the Slant community recommends fman for most people. In the question“What are the best file managers for UNIX-like systems?” fman is ranked 13th while Firefox OS is ranked 37th. The most important reason people chose fman is:
Windows, Mac, and Linux are supported.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Fully open-source
Pro For cheap phones
Mozilla is pushing phones aimed at the most price-sensitive segment of the smartphone market.
Pro Respects your privacy
Firefox OS is not tied to a major advertising platform.
Pro Works on all operating systems
Windows, Mac, and Linux are supported.
Pro Simple to use
Pro Makes finding commands *by name* easy
Pro Slick
Cons
Con Not officially supported on higher-end phones yet
Con Discontinued by Mozilla
Con No (text) file viewer
Con No explicit bookmark support for directories
It though remembers the visited directories and allows to search in this list in most-recently used order and by name.
Con Mainly for key-board-orientated users
The interface is most naturally navigated by arrows and keystrokes. The target market is software developers.
Con Has no menu bar
Hence it is not well suited for visually orientated users which find or remember commands by using a mouse and a menu. Even the fman's hero Sublime Text uses a menu bar.
Con Requires email address to download
Doesn't say what it will do with this data. It is in contrast to the new laws in Europe where only necessary information is allowed to be collected. A download should not require an email address.
Con Still quite buggy
So, for example, sorting only is remembered if triggered by command and not be clicking the table column header using the mouse.
Con Settings can't be found by the GUI
You need to know which files to edit.
Con Default dark theme
No choice between dull-dark or fresh-light.
Con No portable bundle available
On Windows only a net-installer is available.