For the purposes of this list, a portable application is software that can be used from portable storage devices such as USB flash drives, digital audio players, PDAs or external hard drives. To be considered for inclusion, an application must be executable on multiple computers from removable storage without installation, and without writing settings or data onto a computer's non-removable storage. This includes modified portable versions of non-portable applications.

Bundles

Launchers

Development

Scripting languages

Compilers

IDEs

Setup creators

Visual mapping/productivity tools

Graphics

3D modeling and rendering

Animation

Graphic editors

Icon editors

Viewers

Document-based

Office and publishing

Editors

Personal notes

Educational

Games

Emulators

Plug-in emulators

Internet

Web browsers

Email clients

Instant messaging

FTP clients

Download managers

P2P file sharing

IRC

RSS, Atom readers

Telnet, SSH clients

Podcast managers

Anonymity/Anti-censorship

Local wikis

Miscellaneous

Multimedia

File converters

CD/DVD burning

Editors

Audio/MIDI sequencer

Players

Recorders

Video capture

Video repair

Networking

HTTP servers

Miscellaneous

Remote desktop

Other tools

Web editors

Calendar management

File management

File archivers/extractors

PDF tools

Readers

Writers

Security and encryption

Password management

Anti-spyware/malware

Antivirus

Steganography

Real-time disk/volume Encryption

System maintenance

Optimization and cleaning

Storage management

Visual maps of free space and biggest files and folders on hard drive.

System information

Partition/file recovery