Safari (web browser) none. While no official word has been released by Apple, the indication is that these are the final versions available for these operating systems, and both retain significant security issues. While Safari pioneered several now standard HTML5 features (such as the Canvas API) in its early years, it has increasingly come under attack for failing to keep pace with modern web standards. In the past, Apple did not allow third party web browsers under iOS, but now there are plenty of web browsers available for iOS, including Chrome, Firefox, Opera and Edge. However, due to Apple developer's policies, browsers like
SPDY following the recent final ratification of the HTTP/2 standard, support for SPDY would be deprecated, and that support for SPDY would be withdrawn. Google removed SPDY support in Google Chrome 51. Mozilla removed it in Firefox 50. , the group developing SPDY stated publicly that it was working toward standardisation (available as an Internet Draft). The first draft of HTTP/2 used SPDY as the working base for its specification draft and editing. Implementations of SPDY exist in Chromium, Mozilla Firefox, Opera, Amazon Silk, Internet Explorer, and Safari, with the implementations for Chromium and Firefox being open source software. In February