Freeware

Download or update from within the program (Help / Check for Updates).

Thunderbird 3.1.5 fixes the following issues in Thunderbird 3.1.4:
* Several fixes to improve performance, stability and security, see the Security Advisory.
* Several fixes to improve the user interface and add-ons experience.

Download or update from within the program (Help / Check for Updates).

Firefox 3.6.11 fixes the following issues found in previous versions of Firefox 3.6:
* Fixed several security issues.
* Fixed several stability issues.

Driver Sweeper is an advanced driver remover / cleaner. See here for changelog and download.

Download Autoruns v10.04

This fixes a toolbar drawing bug that shows on Windows XP.

Download

Autoruns v10.03: This update adds a number of additional shell extension locations and reports Safe Mode’s alternateshell value.

Source

Download CCleaner(slim)

CCleaner v2.36.1233
* Added FTP Account cleaning.
* Added support for Paint Shop Pro X3, VLC Media Player, MediaMonkey, Winamp, Malwarebytes Anti Malware, Avast! Antivirus and WinPatrol.
* Improved support for Quicktime Player, Ad-Aware and AntiVir Desktop.
* Added support for Firefox based browser Pale Moon.
* Improved support for expanding environment variables %ProgramFiles% and “%CommonProgramFiles%” to both 32-bit and 64-bit folders.
* Added new environment variables: %ProgramFiles32%, %ProgramFiles64%, “%CommonProgramFiles32%”, “%CommonProgramFiles64%”.
* Splitter bar is no longer misbehaving when cleaning is in progress.
* Improved navigation using keyboard.
* Fixed bug in Startup Tool on Windows 2000.
* Minor tweaks and fixes.

Download or update from within the program (Help / Check for Updates).

Thunderbird 3.1.4 fixes the following issues in Thunderbird 3.1.3:
* Several fixes to improve stability.
* Several fixes to improve the user interface.

Download or update from within the program (Help / Check for Updates).

Firefox 3.6.10 fixes the following issues found in previous versions of Firefox 3.6:
* Fixed a single stability issue affecting a limited number of users

Download or update from within the program (Help / Check for Updates).

Firefox 3.6.9 fixes the following issues found in previous versions of Firefox 3.6:
* Introduced support for the X-FRAME-OPTIONS HTTP response header. Site owners can use this to mitigate clickjacking attacks by ensuring that their content is not embedded into other sites.
* Fixed several security issues.
* Fixed several stability issues.