Inkscape (Portable)

Open Source vector graphics editor

Inkscape is an Open Source vector graphics editor, with capabilities similar to Adobe Illustrator, CorelDraw, or Xara X, using the W3C standard Scalable Vector Graphics (SVG) file format.

Inkscape supports many advanced SVG features (markers, clones, alpha blending, etc.) and great care is taken in designing a streamlined interface. It is very easy to edit nodes, perform complex path operations, trace bitmaps and much more. We also aim to maintain a thriving user and developer community by using open, community-oriented development.

http://inkscape.org/download/?lang=en

GIMP (Portable)

Image editor

The GIMP (GNU Image Manipulation Program) is a freely distributed program for such tasks as photo retouching, image composition and image authoring. It has many capabilities. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, etc.

http://portableapps.com/apps/graphics_pictures/gimp_portable

Skype (Portable)

Instant messaging, video chat and phone calls

Skype lets you connect to others via instant message, audio conferencing and video phone. It can also call regular phone lines from anywhere in the world. It's packaged as a portable app so you can communicate on the go.

Online Installer: This is an online installer that will download additional files during setup.

http://portableapps.com/apps/internet/skype_portable

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

Process Explorer (Portable)

Ever wondered which program has a particular file or directory open? Now you can find out. Process Explorer shows you information about which handles and DLLs processes have opened or loaded.
The Process Explorer display consists of two sub-windows. The top window always shows a list of the currently active processes, including the names of their owning accounts, whereas the information displayed in the bottom window depends on the mode that Process Explorer is in: if it is in handle mode you'll see the handles that the process selected in the top window has opened; if Process Explorer is in DLL mode you'll see the DLLs and memory-mapped files that the process has loaded. Process Explorer also has a powerful search capability that will quickly show you which processes have particular handles opened or DLLs loaded.
The unique capabilities of Process Explorer make it useful for tracking down DLL-version problems or handle leaks, and provide insight into the way Windows and applications work.
http://download.sysinternals.com/Files/ProcessExplorer.zip

VLC media player (Portable)

VLC media player is the no. 1 media player for newbies and a must have for all. The media player that fills all your needs. It can handle DVDs, (S)VCDs, Audio CDs, web streams, TV cards and much more.
You don't need to keep track of a dozen codec packs you need to have installed. VLC has all codecs built-in. It comes with support for nearly all codec there is.
http://www.videolan.org/vlc/download-windows.html

LameXP

LameXP (audio converter) is a graphical front-end for the LAME MP3, Ogg Vorbis and Nero AAC encoders. The Nero Encoder is *not* included in the download, it's available from the Nero Webseite as free download. Accepted input formats are: Wave, MP3, Ogg Vorbis, AAC/MP4, FLAC, WavPack, Musepack, Speex and APE. Batch processing is implemented and will use multi-threading when several processors/cores are available.

http://www.videohelp.com/tools/LameXP

HJSplit for Windows (Portable)

It splits or join files of any type and size. Does not need to be installed. Just click on hjsplit.exe and the program starts. This program can also handle files which are larger than 10Gb.


http://www.treepad.net/download/hjsplit.zip

Video Thumbnails Maker

Video Thumbnails Maker by Scorp allows you to make thumbnails (caps, previews) of video files. The utility can be used for home-video cataloging and for network video sharing support. Supports of the batch processing of videofiles. Supports of practically any videos-formats (even MP4, MKV, MOV, QT, FLV, SWF, RM if you have appropriate codecs).

Note! The new versions replace a frame of the contact sheet with the program's logo if you do not donate. However if you use the older version 2.1.06 you will have a full working program without the annoying frame logo.

Get version 2.1.06 here:
http://www.videohelp.com/download/VideoThumbnailsMaker_Setup2106.zip

MKVToolnix (Portable)

MKVtoolnix is a set of tools to create, alter, split, join and inspect Matroska files(mkv). Command line tools but mkvmergeGUI frontend is included (mmg.exe). Use MKVExtractGUI/MKVE Wizard or MKVcleaver to extract/demultiplex mkv video and audio files.


http://www.videohelp.com/tools/MKVtoolnix

Foxit Reader (Portable)

Foxit Reader is a free PDF document viewer, with incredible small size, breezing-fast launch speed and rich feature set.


http://portableapps.com/apps/office/foxit_reader_portable

MediaInfo (Portable)

MediaInfo supplies technical and tag information about a video or audio file.
It is free software (free of charge and free access to source code: GPL or LGPL licence)


http://mediainfo.sourceforge.net/en/Download

Avidemux (Portable)

Avidemux is a free video editor designed for simple cutting, filtering and encoding tasks. It supports many file types, including AVI, DVD compatible MPEG files, MP4 and ASF, using a variety of codecs. Tasks can be automated using projects, job queue and powerful scripting capabilities.

http://avidemux.sourceforge.net/

Subtitle Edit (Portable)

Subtitle Edit is a free editor for video subtitles - a subtitle editor.

Features

• Visually sync/adjust a subtitle (start/end position and speed)
• Create/adjust subtitle lines
• Translation helper (for manual translation)
• Convert between SubRib, MicroDVD, Substation Alpha, SAMI, and more
• Rip subtitles from a (decrypted) dvd
• Import and OCR VobSub sub/idx binary subtitles
• Can read and write UTF-8 and other unicode files (besides ANSI)
• Show texts earlier/later
• Merge/split
• Adjust display time
• Fix common errors wizard
• Remove text for hear impaired (HI)
• Renumbering
• Swedish to danish translation built-in (via Multi Translator Online)
• Google translation built-in
• Spell checking via Open Office dictionaries/NHunspell (many dictionaries available)
• Effects: Typewriter and karoake
• Can open subtitles embedded inside matroska files
• History/undo manager
• Compare subtitles
• Multiple search and replace
• Change casing using names dictionary

Subtitle Edit is available in the following languages:

• Danish
• English
• Italian (thx Angelo Contardi)
• Polish (thx admas)

http://www.nikse.dk/subtitleedit/

FileZilla (Portable)

FileZilla is a cross-platform graphical FTP, FTPS and SFTP client a lot of features, supporting Windows, Linux, Mac OS X and more.

FileZilla Server is a reliable FTP server for Windows.

http://sourceforge.net/projects/filezilla/files/ (.win32.zip)

Malwarebytes' Anti-Malware Free

Malwarebytes Anti-Malware is a surprisingly effective freeware antimalware tool. It's a relatively speedy malware remover, with the quick scan taking about 8 minutes even with other high-resource programs running. The heuristics engine proved on multiple computers during empirical testing that it was capable of determining the difference between false positives and dangerous apps.
Do note that the real-time protection is restricted to the paid version, as is the scheduler for updates and scans. Overall, though, Malwarebytes Anti-Malware is a responsive malware remover that does what it should with a minimum of fuss.

http://www.malwarebytes.org/