from the Linux version of Chrome 35 and later. In April 2015, Chrome for Windows and OS X (versions 42 and later) disabled NPAPI support by default. However, until September 2015 (version 45), users could re-enable NPAPI. Opera Opera dropped support with version 37 in May 2016. Firefox Mozilla Firefox release 52.0 in March 2017 removed all support for NPAPI except for Flash. Meanwhile, the ESR channel retained general support for this feature with version 52 ESR being the last NPAPI resort. Firefox 69.0 disabled the Flash NPAPI by default. In Firefox 85.0, released in January 2021, NPAPI support was completely removed. In the ESR channel, support for Flash NPAPI ended with version 78.15.0, released in October 2021. Safari Safari has dropped support for all NPAPI plugins except for Flash with version 12 released in September 2018. Flash support has been removed from Safari 14, released in September 2020. SeaMonkey SeaMonkey stopped supporting NPAPI plugins from version 2.53.1, with the exception of Flash. NPAPI support was completely removed in SeaMonkey 2.53.7, released in March 2021. Support The following list of web browsers support all NPAPI plugins: 360 Secure Browser () or 360 Extreme Explorer () Basilisk K-Meleon (Goanna engine) Pale Moon (Pale Moon future roadmap) Uzbl Waterfox (Allowing running NPAPI plugins but only the 64-bit one) Similar technologies ActiveX Internet Explorer and browsers based on Internet Explorer use ActiveX controls, ActiveX documents and ActiveX scripting to offer in-page extensibility on par with NPAPI. Although commonly associated with Internet Explorer, ActiveX is integration technology that allows any computer program to integrate parts of other computer programs that support such integration. Internet Explorer, however, is discontinued and its replacement, Microsoft Edge, does not support ActiveX. PPAPI On 12 August 2009 a page on Google Code introduced a new project called Pepper, with the associated Pepper Plugin API (PPAPI); PPAPI is a derivative of NPAPI aimed to make plugins more portable and more secure. This extension is designed specifically to ease the implementation of out-of-process plugin execution. PPAPI was initially only supported by Google Chrome and Chromium. Later, other Chromium-based browsers such as Opera and Vivaldi added PPAPI plugin support. In February 2012 Adobe Systems announced that future Linux versions of Adobe Flash Player would be provided only via PPAPI. The previous release, Flash Player 11.2, with NPAPI support, would receive security updates for five years. In August 2016 Adobe announced that, contrary