HWiNFO32 (Portable)

HWiNFO32 is a professional hardware information and diagnostic tool supporting latest components, industry technologies and standards.
32-bit (IA-32) and 64-bit (x64, IA-64) platforms available.

Main features:
* Comprehensive hardware information
* System health monitoring (Thermal, Voltage, Fan, Power)
* Basic benchmarks
* Text, CSV, XML, HTML, MHTML report formats

https://www.hwinfo.com/download.php

Notepad++ (Portable)

Notepad++, a source code editor and MS Windows Notepad replacement, has the mission to offer a greener environment. By optimizing its routines, it results in reducing CPU power consumption then reducing the world carbon dioxide emissions.

http://sourceforge.net/projects/notepad-plus/files/ (Portable version = bin.zip)

7-Zip (Portable)

7-Zip Portable is the popular 7-Zip packaged as a portable app, so you can take your file archiver with you and work with your compressed 7z, ZIP, GZIP, BZIP2, TAR, RAR files and more on the go. You can place it on your USB flash drive, iPod, portable hard drive or a CD and use it on any computer, without leaving any personal information behind.

https://portableapps.com/apps/utilities/7-zip_portable

Mote-Keys

Mote-Keys is an open source tool for converting WinLIRC button presses into Windows virtual key-presses. Mote-Keys has an easy-to-use GUI and is easy to configure. It will run in the background and is accessible through the system tray. (great for HTPCs)

http://sourceforge.net/projects/mote-keys/

ImgBurn

ImgBurn is a lightweight CD / DVD / HD DVD / Blu-ray burning application that everyone should have in their toolkit! Supports a wide range of image file formats - including BIN, CUE, DI, DVD, GI, IMG, ISO, MDS, NRG and PDI.

It can burn Audio CD's from any file type supported via DirectShow / ACM - including AAC, APE, FLAC, M4A, MP3, MP4, MPC, OGG, PCM, WAV, WMA and WV. You can use it to build DVD Video discs (from a VIDEO_TS folder), HD DVD Video discs (from a HVDVD_TS folder) and Blu-ray Video discs (from a BDAV / BDMV folder) with ease.

http://www.imgburn.com/index.php?act=download

WTVIRBridge (Portable)

WTVIRBridge is an unofficial replacement for Hauppauge's WinTV IR software, supporting analog WinTV capture devices (PCI & USB) including the PVR versions (just a hope, there are no warranties!).
There are a number of things that WTVIRBridge can do when a key is pressed:

• Launch a shortcut, starting a media player for example.
• Broadcast a message over the Windows Messaging System.
• Send a message over the built-in WinLIRC-compatible server. This lets you control all WinLIRC-compatible multimedia applications using your WinTV remote.

http://wtvirbridge.sourceforge.net/download.php

Speccy (Portable)

Speccy is an advanced System Information tool for your PC.
Speccy will give you detailed statistics on every piece of hardware in your computer. Including CPU, Motherboard, RAM, Graphics Cards, Hard Disks, Optical Drives, Audio support. Additionally Speccy adds the temperatures of your different components, so you can easily see if there's a problem!

http://www.piriform.com/speccy/download/portable