Firefox ESR
The Extended Support Release of Firefox, a long-term stable build intended for organisations.
These buttons open the developer's own site, repository or store listing in a new tab. wares.gg does not host downloads.
2 more ways to get Firefox ESR
Other download sites
Run by third parties, not by Mozilla. Prefer the official page above when it works.
Package managers
- Chocolatey
choco install firefoxesr
About Firefox ESR
Firefox ESR is Mozilla's Extended Support Release channel. It gives organisations a build that stays stable over a longer period, while the regular Firefox release gets the latest features first. Both support enterprise policies for central configuration.
Mozilla publishes ESR installers for Windows, macOS and Linux, including MSI and PKG packages for managed deployment, along with group policy templates. It is also the version Mozilla offers to people on older systems, such as Windows 8.1 and macOS 10.14, that newer releases no longer support.
Strengths
- Long-term stable feature set for managed deployments
- MSI and PKG installers plus group policy templates
- Still available for older operating systems
Limitations
- New features arrive later than in regular Firefox
- Mainly aimed at organisations rather than home users
Details
- Pricing
- FreeFree and open source; Mozilla offers optional paid professional support for organisations.
- License
- MPL-2.0
- Developer
- Mozilla
- Platforms
- Windows, macOS, Linux
- How it runs
- Downloadable app
- Account
- Not required
- Best suited for
- Organisations and users who want a Firefox that changes slowly
- Categories
- Web browsers, IT administration
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
Alternatives to Firefox ESR
Compare allSoftware that can replace Firefox ESR for an important use case, and what changes if you switch.
Firefox
The main browser not built on Chromium, with tracking protection turned on by default.
Firefox is the regular release of the same browser, getting new features sooner and adding Android and iOS builds, but it changes faster than the long-term stable ESR.
Microsoft Edge
Microsoft's Chromium-based browser, bundled with Windows.
Microsoft Edge moves managed deployments to a proprietary Chromium browser bundled with Windows that runs Chrome extensions, while pushing Bing and Microsoft accounts.
Google Chrome
Google's browser, the Chromium-based one most web development is tested against.
Google Chrome switches to a proprietary Chromium browser with updates every four weeks and the largest extension library, tied closely to Google account and advertising systems.
Waterfox
A Firefox build with telemetry stripped out, ad blocking and encrypted DNS turned on from the start.
Waterfox keeps Firefox extensions and profiles working, removes telemetry and enables ad blocking and encrypted DNS, but a small team ships security updates after Firefox.
LibreWolf
A Firefox build with the privacy settings already turned up and uBlock Origin included.
LibreWolf keeps the Firefox base with privacy settings raised and uBlock Origin included, but its aggressive defaults break some sites and log you out whenever you close it.
Mercury
A Firefox fork with compiler optimizations and privacy patches taken from LibreWolf, Waterfox and GNU IceCat.
Mercury is a compiler-optimized Firefox fork with privacy patches and a portable variant, but a single developer maintains it and updates can trail official Firefox releases.
Similar software
Related functionality, not necessarily a direct replacement.
Firefox Developer Edition
A pre-release build of Firefox for web developers, with the newest developer tools and platform features.
Firefox Nightly
Mozilla's daily pre-release build of Firefox for trying and testing upcoming browser features.
Microsoft Edge Dev / Canary
Preview channels of Microsoft Edge for testing early features.
Chromium
The open-source browser project that Chrome, Edge, Brave, Opera and Vivaldi are all built from.
