Linux Apps

Ubuntu is a Linux-based Debian-derived open source operating system for desktop computers.

The GNOME project provides two things: The GNOME desktop environment, an intuitive and attractive desktop for users, and the GNOME development platform, an extensive framework for building applications that integrate into the rest of the desktop.

A application for installing apps and updates.

GNOME Tweak Tool allows the adjustment of several advanced GNOME options that can't be configured in gnome-control-center.

System Monitor is a tool to manage running processes and monitor system resources.

GNOME Terminal is a terminal emulator for the GNOME desktop environment written by Havoc Pennington and others. Terminal emulators allow users to execute commands using a real UNIX shell while remaining on their graphical desktop.[

Nautilus (Files) is a file manager designed to fit the Gnome desktop design and behaviour, giving the user a simple way to navigate and manage its files.

File Roller is the archive manager of the GNOME desktop environment. It can extract, view, create and modify archives. File Roller is only a graphical interface to archiving utilities such as tar and zip.

Fast application launcher for Linux. Custom shortcuts for web URLs and scripts. Extensions are coming soon.

KeePass is a free open source password manager, which helps you to manage your passwords in a secure way. You can put all your passwords in one database, which is locked with one master key or a key file. So you only have to remember one single master password or select the key file to unlock the whole database. The databases are encrypted using the best and most secure encryption algorithms currently known (AES and Twofish).
Also portable app: http://portableapps.com/apps/utilities/keepass_portable .

Mozilla Firefox (known simply as Firefox) is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation.

Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.

It supports POP (storing mail locally on your hard drive so that it can be accessed without an internet connection), and IMAP. It features excellent mail filter capabilities and management.

Thunderbird has strong support for using multiple accounts and identities, including automated signature features.

Chat functionality is built in, so you can enjoy real-time conversation with your contacts, right from your favorite messaging application, with multiple supported networks. Thunderbird makes it easy to search through both past conversations and received emails.

Thunderbird can also function as an RSS/Atom feed reader, and has a large selection of add-ons that extend it with calendar support, PGP support, integration with online services and much more.

Available also as portable app: http://portableapps.com/apps/internet/thunderbird_portable

Tor is free software and an open network that helps you defend against traffic analysis, a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security.

The Tor software protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody watching your Internet connection from learning what sites you visit, it prevents the sites you visit from learning your physical location, and it lets you access sites which are blocked.

The Tor Browser lets you use Tor on Windows, Mac OS X, or Linux without needing to install any software. It can run off a USB flash drive, comes with a pre-configured web browser to protect your anonymity, and is self-contained.

An instant messaging app that provides online text message and video chat services.

Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features.

Sublime Text may be downloaded and evaluated for free without an expiration time limit, however a license must be purchased for continued use.

Evince is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS, SyncTex support with gedit, comics books (cbr,cbz,cb7 and cbt). For a comprehensive list of formats supported, see Supported Document Formats. .

LibreOffice is a free and open-source office suite that is compatible with other major office suites, and is available on all operating systems. It is an independently-developed version of the OpenOffice.org suite.

The office suite includes:

LibreOffice - Writer, a word processor with similar functionality and file support to Microsoft Office Word . It has extensive WYSIWYG word processing capabilities, but can also be used as a basic text editor.

LibreOffice - Calc , a spreadsheet program, similar to Microsoft Office Excel . It has a number of unique features, including a system which automatically defines series of graphs, based on information available to the user.

LibreOffice - Impress , a presentation program resembling Microsoft Office Powerpoint . Presentations can be exported as SWF files, allowing them to be viewed on any computer with Adobe Flash installed.

LibreOffice - Draw , a vector graphics editor and diagramming tool similar to Microsoft Office Visio . It provides connectors between shapes, which are available in a range of line styles and facilitate building drawings such as flowcharts. It also includes features similar to desktop publishing software such as Scribus and Microsoft Office Publisher .

LibreOffice - Math , an application designed for creating and editing mathematical formulae.
LibreOffice - Base , a database management program, similar to Microsoft Office Access .

Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome. Also available as a standalone application. Supports about 20 languages (on different levels) and allows customization.

GoldenDict is an open-source dictionary program for PC computers that gives translations of words and phrases for different languages. It allows use of several popular dictionary file formats simultaneously.

A free, ad-sponsored, mobile version is available for Android devices. It fully supports Lingvo, Babylon, StarDict, Lingoes and Dictd dictionary files.

Translate Shell (formerly Google Translate CLI) is a command-line translator powered by Google Translate (default), Bing Translator, Yandex.Translate and Apertium.

Eye of GNOME is the official image viewer for the GNOME Desktop environment. With it, you can view single image files, as well as large image collections. The Eye of GNOME supports a variety of image file formats. The GdkPixbuf library determines which file formats Eye of GNOME can load and save. If the appropriate plugins are installed on your system, Image Viewer will be able to open more image formats than those listed below.

XnConvert is an easy image converter for graphic files, photos and images available on Windows, MacOSX and Linux.
It supports more than 400 file formats (jpeg, tiff, png, gif, camera raw, jpeg2000, WebP, OpenEXR, ...).
You can resize, add a watermark, change contrast, brightness or gamma, apply filters and many other things.

Shutter is a feature-rich screenshot program. You can take a screenshot of a specific area, window, your whole screen, or even of a website - apply different effects to it, draw on it to highlight points, and then upload to an image hosting site, all within one window.

Pinta is a free, open source drawing/editing program modeled after Paint.NET . Its goal is to provide users with a simple yet powerful way to draw and manipulate images on Linux, Mac, and Windows.

On Windows, Pinta requires the .NET framework, just like Paint.NET.