Version 51.0a2, first offered to Firefox Developer Edition channel users on September 20, 2016

For more information about Developer Edition please see this MDN article.

New

• Support saving passwords for forms without 'submit' events
  
• Improved video performance for users without GPU acceleration:
  
  • Less CPU Usage
  • Better full screen experience
• Zoom indicator is shown in the URL bar if the zoom level is not at default level
  
• View passwords from the prompt before saving them
  
• Added support for FLAC (Free Lossless Audio Codec) playback
  

Changed

• Use Skia for content rendering (Linux)
  
• Process separation (e10s) now supported on Windows 10 touch screen devices and systems with accessibility tools installed
  

Download Developer Edition in your language

Download Firefox Developer Edition in your language to experience the newest features and innovations in an unstable environment even before they go to Beta. Give us feedback that will determine what makes it to Final Release and help shape the future of Firefox.

 

Fully localized versions

Language		Windows	Windows 64-bit	OS X	Linux	Linux 64-bit
Acholi	Acholi	Download	Download	Download	Download	Download
Afrikaans	Afrikaans	Download	Download	Download	Download	Download
Albanian	Shqip	Download	Download	Download	Download	Download
Arabic	عربي	Download	Download	Download	Download	Download
Aragonese	aragonés	Download	Download	Download	Download	Download
Armenian	Հայերեն	Download	Download	Download	Download	Download
Assamese	অসমীয়া	Download	Download	Download	Download	Download
Asturian	Asturianu	Download	Download	Download	Download	Download
Azerbaijani	Azərbaycanca	Download	Download	Download	Download	Download
Basque	Euskara	Download	Download	Download	Download	Download
Bengali (Bangladesh)	বাংলা (বাংলাদেশ)	Download	Download	Download	Download	Download
Bengali (India)	বাংলা (ভারত)	Download	Download	Download	Download	Download
Bosnian	Bosanski	Download	Download	Download	Download	Download
Breton	Brezhoneg	Download	Download	Download	Download	Download
Bulgarian	Български	Download	Download	Download	Download	Download
Burmese	မြန်မာဘာသာ	Download	Download	Download	Download	Download
Catalan	Català	Download	Download	Download	Download	Download
Chinese (Simplified)	中文 (简体)	Download	Download	Download	Download	Download
Chinese (Traditional)	正體中文 (繁體)	Download	Download	Download	Download	Download
Croatian	Hrvatski	Download	Download	Download	Download	Download
Czech	Čeština	Download	Download	Download	Download	Download
Danish	Dansk	Download	Download	Download	Download	Download
Dutch	Nederlands	Download	Download	Download	Download	Download
English (British)	English (British)	Download	Download	Download	Download	Download
English (South African)	English (South African)	Download	Download	Download	Download	Download
English (US)	English (US)	Download	Download	Download	Download	Download
Esperanto	Esperanto	Download	Download	Download	Download	Download
Estonian	Eesti keel	Download	Download	Download	Download	Download
Finnish	suomi	Download	Download	Download	Download	Download
French	Français	Download	Download	Download	Download	Download
Frisian	Frysk	Download	Download	Download	Download	Download
Fulah	Pulaar-Fulfulde	Download	Download	Download	Download	Download
Gaelic (Scotland)	Gàidhlig	Download	Download	Download	Download	Download
Galician	Galego	Download	Download	Download	Download	Download
Georgian	ქართული	Download	Download	Download	Download	Download
German	Deutsch	Download	Download	Download	Download	Download
Greek	Ελληνικά	Download	Download	Download	Download	Download
Guarani	Avañe'ẽ	Download	Download	Download	Download	Download
Gujarati (India)	ગુજરાતી (ભારત)	Download	Download	Download	Download	Download
Hebrew	עברית	Download	Download	Download	Download	Download
Hindi (India)	हिन्दी (भारत)	Download	Download	Download	Download	Download
Hungarian	magyar	Download	Download	Download	Download	Download
Icelandic	íslenska	Download	Download	Download	Download	Download
Indonesian	Bahasa Indonesia	Download	Download	Download	Download	Download
Irish	Gaeilge	Download	Download	Download	Download	Download
Italian	Italiano	Download	Download	Download	Download	Download
Japanese	日本語	Download	Download	Download	Download	Download
Kabyle	Taqbaylit	Download	Download	Download	Download	Download
Kannada	ಕನ್ನಡ	Download	Download	Download	Download	Download
Kaqchikel	Maya Kaqchikel	Download	Download	Download	Download	Download
Kazakh	Қазақ	Download	Download	Download	Download	Download
Khmer	ខ្មែរ	Download	Download	Download	Download	Download
Korean	한국어	Download	Download	Download	Download	Download
Latgalian	Latgaliešu valoda	Download	Download	Download	Download	Download
Latvian	Latviešu	Download	Download	Download	Download	Download
Ligurian	Ligure	Download	Download	Download	Download	Download
Lithuanian	lietuvių kalba	Download	Download	Download	Download	Download
Lower Sorbian	Dolnoserbšćina	Download	Download	Download	Download	Download
Macedonian	Македонски	Download	Download	Download	Download	Download
Maithili	मैथिली মৈথিলী	Download	Download	Download	Download	Download
Malay	Melayu	Download	Download	Download	Download	Download
Malayalam	മലയാളം	Download	Download	Download	Download	Download
Marathi	मराठी	Download	Download	Download	Download	Download
Nepali	नेपाली	Download	Download	Download	Download	Download
Norwegian (Bokmål)	Norsk bokmål	Download	Download	Download	Download	Download
Norwegian (Nynorsk)	Norsk nynorsk	Download	Download	Download	Download	Download
Odia	ଓଡ଼ିଆ	Download	Download	Download	Download	Download
Persian	فارسی	Download	Download	Download	Download	Download
Polish	Polski	Download	Download	Download	Download	Download
Portuguese (Brazilian)	Português (do Brasil)	Download	Download	Download	Download	Download
Portuguese (Portugal)	Português (Europeu)	Download	Download	Download	Download	Download
Punjabi (India)	ਪੰਜਾਬੀ (ਭਾਰਤ)	Download	Download	Download	Download	Download
Romanian	Română	Download	Download	Download	Download	Download
Romansh	rumantsch	Download	Download	Download	Download	Download
Russian	Русский	Download	Download	Download	Download	Download
Serbian	Српски	Download	Download	Download	Download	Download
Sinhala	සිංහල	Download	Download	Download	Download	Download
Slovak	slovenčina	Download	Download	Download	Download	Download
Slovenian	Slovenščina	Download	Download	Download	Download	Download
Songhai	Soŋay	Download	Download	Download	Download	Download
Spanish (Argentina)	Español (de Argentina)	Download	Download	Download	Download	Download
Spanish (Chile)	Español (de Chile)	Download	Download	Download	Download	Download
Spanish (Mexico)	Español (de México)	Download	Download	Download	Download	Download
Spanish (Spain)	Español (de España)	Download	Download	Download	Download	Download
Swedish	Svenska	Download	Download	Download	Download	Download
Tagalog	Tagalog	Download	Download	Download	Download	Download
Tamil	தமிழ்	Download	Download	Download	Download	Download
Telugu	తెలుగు	Download	Download	Download	Download	Download
Thai	ไทย	Download	Download	Download	Download	Download
Turkish	Türkçe	Download	Download	Download	Download	Download
Ukrainian	Українська	Download	Download	Download	Download	Download
Upper Sorbian	Hornjoserbsce	Download	Download	Download	Download	Download
Urdu	اُردو	Download	Download	Download	Download	Download
Uzbek	Oʻzbek tili	Download	Download	Download	Download	Download
Vietnamese	Tiếng Việt	Download	Download	Download	Download	Download
Welsh	Cymraeg	Download	Download	Download	Download	Download
Xhosa	isiXhosa	Download	Download	Download	Download	Download