Stable AMO Version, see changelog for details.

Cross-browser NoScript on the chrome web store

Supported browsers: Firefox (Desktop and Mobile on Android), SeaMonkey, Tor Browser (where it is built-in), Chromium/Chrome.
Other browsers based on Gecko versions >= 45 might work, but are not tested.

Direct download

You can get latest stable version here, too, using this direct download link for NoScript 11.2.3
To install, just drag and drop it onto your address bar.

v 11.2.3
============================================================
x [L10n] Purged non-inclusive terms from obsolete messages
x Added red halo feedback in CUSTOM preset for noscript
  element capability
x Fixed missing red halo feedback in CUSTOM preset for
  inline scripts and other capabilities sometimes
x Fixed race condition causing noscript elements not to be
  rendered sometimes

v 11.2.2
  ============================================================
x Fixed typo in version checked on noscript capability update.
x [L10n] Updated bn, br, ca, da, de, el, es, fr, he, is, it,
  ja, lt, mk, ms, nb, nl, pt_BR, ru, sq, sv_SE, tr, zh_CN,
  zh_TW.

v 11.2.1
============================================================
x Configurable capability to show noscript elements on
  script-disabled pages
x [UI] Minor CSS Chromium compatibility fix
x [nscl] Refactoring to use Policy and its dependencies from
  the NoScript Commons Library
x Switch to faster and easier to maintain tld.js from nscl
x [UI] Fix punycode inconsistencies
x [UI] Improve preset and site controls alignment
x Provide feedback in the CUSTOM tab for WebGL usage
  attempts even if the canvas element is not attached to the
  DOM
x [L10n] Updated de, ja
x Updated HTML events
x Prevent double script on trusted file:// pages in some
  edge cases
x Prevent detection of wrapped functions (e.g. in WebGL
  interception) on Chromium

You can still download NoScript "Classic" (5.1.9) (SHA256) for Palemoon, Seamonkey, Waterfox and possibly other "vintage" (pre-Gecko 57) Firefox forks here: we'll do our best to provide security fixes as long as supporting browser still guarantee their own security updates.

Notice: you may need to open about:config and set your xpinstall.signatures.required preference to false in order to install NoScript 5.x, since Mozilla doesn't support signatures for legacy add-ons anymore. If you're using a non ESR Firefox, you may also need this hack.

v 5.1.9
=============================================================
x Fixed automatic reload bug (thanks ThomasW and barbaz for
  reporting)

Users of Firefox 44 and below are urged to upgrade their very unsafe browser. For those few who can't,

• latest NoScript version compatible with Gecko 46 - Gecko 56 is 5.1.9 (SHA256);
• latest NoScript version compatible with Gecko 13 - Gecko 45 is 2.9.0.14 (SHA256);
• latest NoScript version compatible with Gecko 1.9 - Gecko 12 is 2.9.0.1rc1 (SHA256);
• latest NoScript version compatible with Gecko < 1.9 is 1.10 (SHA256).

Development version

If you're brave enough and you need a specific feature or fix not released yet, or you simply want to provide feedback before official release, you may want try this
"Quantum" NoScript 11.2.3rc1 development build

Starting with NoScript 10.1.8.3, NoScript's public source code repository is hosted on Github.

Recent development history:

v 11.2.3rc1
============================================================
x [L10n] Purged non-inclusive terms from obsolete messages
x Added red halo feedback in CUSTOM preset for noscript
  element capability
x Fixed missing red halo feedback in CUSTOM preset for
  inline scripts and other capabilities sometimes
x Fixed race condition causing noscript elements not to be
  rendered sometimes

v 11.2.1rc4
============================================================
x [UI] Minor CSS Chromium compatibility fix
x Configurable capability to show noscript elements on
  script-disabled pages
x [L10n] Updated de

v 11.2.1rc3
============================================================
x [nscl] Improved integration of the NoScript Commons
  Library
x Moved nscl submodule into src
x [nscl] Update (restructured tree)
x Removed nscl cache directory from src
x [nscl] Refactoring to use Policy and its dependencies from
  the NoScript Commons Library

v 11.2.1rc2
============================================================
x Remove ||= operator which makes AMO's validator explode
x Switch to faster and easier to maintain tld.js from nscl
x [nscl] Updated with TLD_CACHE removal after usage
x [nscl] Updated NoScript Common Library inclusions
x Added the NoScript Commons Library (nscl) as a submodule
x [UI] Fix punycode inconsistencies
x [UI] improve preset and site controls alignment
x Updated TLDs
x Provide feedback in the CUSTOM tab for WebGL usage
  attempts even if the canvas element is not attached to the
  DOM
x [L10n] Updated de, ja
x Updated HTML events

v 11.2.1rc1
============================================================
x Prevent double script on trusted file:// pages in some
  edge cases
x Updated events archive
x Prevent detection of wrapped functions (e.g. in WebGL
  interception) on Chromium
x Updated TLDs
x Merge German language update

Feedback

If you find something wrong about NoScript, read the FAQ page and/or let me know: I'll try to fix it as soon as I can.

You can also discuss about NoScript on this Forum.

Have your safest browsing experience!