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/