NoScript is Free Software, but if you like it, you can support its progress :)

Supported browsers: Firefox 3.0 and above, SeaMonkey 1.0.5 and above, Flock, IceWeasel, Minefield
Other browsers based on Gecko 1.9.0 and above might work, but are not tested.

Direct download

You can get latest stable version here, too, using this direct download link for NoScript 2.0.2.3
To install, just drag and drop it onto your address bar.

If you find any problem installing it, this FAQ may help.

Users of Firefox 2.0 and below are urged to upgrade their very unsafe browser. For those few who can't, latest legacy-compatible NoScript version is 1.10.

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 try this
development build.
Recent development history:

v 2.0.2.4rc2
==========================================================================
+ [XSS] Improved Facebook games compatibility
x [ClearClick] Fixed ABP tabs interfering with cross-window snapshots
x [ClearClick] Fixed bug preventing clicks on frames embedded by URLs
  which have no host field
- Removed legacy code to handle ABP tabs on NoScript-blocked objects

v 2.0.2.4rc1
==========================================================================
x [HSTS] Fixed SSL certificate error pages not being patched (removing
  the expert interface) when a broken HSTS site is open first time (thaks
  Porkulus for reporting)

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!