When comparing Vienna vs Safari, the Slant community recommends Safari for most people. In the question“What are the best RSS readers for Mac OS X?” Safari is ranked 3rd while Vienna is ranked 4th. The most important reason people chose Safari is:
The rendering of the pages and the browser compatibility with OSX works smoothly, when compared to other browsers. Also you get very high battery life with Safari, when compared to [Chrome](http://blog.getbatterybox.com/which-browser-is-the-most-energy-efficient-chrome-vs-safari-vs-firefox/).
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open Source
Vienna is an Open Source project. That means that every single detail of its implementation is freely available.
Pro Great Interface
Pro Powerful keyboard navigation
There are easy to remember single keystrokes to scroll through a post, mark it a (un-) read etc.
Pro Works elegantly in OSX
The rendering of the pages and the browser compatibility with OSX works smoothly, when compared to other browsers. Also you get very high battery life with Safari, when compared to Chrome.
Pro Extremely fast
Pro Sleek design
– No distraction stuff like favicons in tabs, all that borders, bevels and embosses in panels like in other browsers, no ugly shaped tabs.
– Neat adress bar.
– Good looking start “show all tabs” screen.
Pro iCloud syncing
Tabs, passwords, bookmarks and, history all sync across devices.
Pro Safari uses Webkit, a great open source web engine
Webkit is very light compared to Blink, renders web pages at an incredible speed, great CSS support and is also constantly evolving.
Cons
Con No longer functions as Apple blocks its launch for security reasons
This have been fixed.
Con OSX only
Apple dropped Windows support after Safari 5.
Con Does NOT block Ads
Doesn't block ads, unlike browsers like Brave and Vivaldi.
Con Poor support for new web technologies
Safari usually takes its time when it comes to adopting new and useful web technologies meaning that the user gets an inferior experience compared to other modern browsers.
Con Proprietary
While Safari er is currently available gratis (without monetary charge) on Mac OS X, it is currently not libre (meaning that it does not allow users to view the source code used to create, to modify that code, or to redistribute modifications) and is therefore neither free nor open-source software.
Con Outdated Rendering engine
All other browsers and toolkits (Qt/GTK) have shifted to Googles Blink-fork of KHTML/Webkit so Apple is currently the only main contributor left.
Con Terrible support for open source formats like .VP9 or .ogg
Apple does not support open source formats. Instead, they use H.264 and H.265.
Con Even on OSX not the best Experience
Video controls are bad esp. on youtube. Only few browser extensions.