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"Whether you're looking for an alternative to expensive commercial software or just trying to get a feel for what's out there, AlternativeTo is a handy service for finding software alternatives."
SpiderOak provides an easy, secure and consolidated free online backup, storage, access, sharing & sync* tool for Windows, Mac OS X, and Linux (Ubuntu, Debian & Fedora).
VLC media player is an lightweight, open-source multimedia player that supports nearly all digital audio and video formats (e.g. H.264 ,MKV, TS (but not from Technisat DigiCorder), MPEG-2, mp3, AVI, MPEG-4,...
Mozilla Firefox is a free and open source web browser descended from the Mozilla Application Suite. Firefox is highly extensible, with thousands of third-party add-ons available. Add-ons gallery:...
Ubuntu is a community developed, Linux-based operating system that is perfect for laptops, desktops and servers. It contains all the applications you need - a web browser, presentation, document and...
Adblock Plus is a Firefox add-on and Chrome extension that blocks internet ads, allowing you to regain control of the internet and view the web the way you want to. It is supported by over forty filter...
Wikipedia is a free, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Wikipedia has 17 million articles (3.5 million in English), which have been written collaboratively by...
WordPress is a state-of-the-art publishing platform with a focus on aesthetics, web standards, and usability. WordPress is both free and priceless at the same time. More simply, WordPress is what you use...
Songbird is an open-source customizable music player thats under active development. It is based on the Mozilla platform and the ability to customize the program is huge. Loads of add-ons available!
XBMC is a free and open source media player and entertainment center for Linux, Mac OS X, Windows, XBox, and iOS. XBMC is designed to be the perfect companion to a home theater PC- it supports an almost...
Android is an operating system for mobile devices such as smartphones and tablet computers. It consists of a kernel based on the Linux kernel, with middleware, libraries and APIs written in C and application software running on an application...
Chromium is the open-source browser project from which Google Chrome draws its source code. Chromium aims to build a safer, faster, and more stable way for all Internet users to experience the web. An...
FLAC stands for Free Lossless Audio Codec, an audio format similar to MP3, but lossless, meaning that audio is compressed in FLAC without any loss in quality. This is similar to how Zip works, except with FLAC...
CyanogenMod is an aftermarket firmware for a number of cell phones based on the open-source Android operating system. It offers features not found in the official Android based firmwares of vendors of these...
Wunderlist is a free, open source, simple and beautiful cross-platform task management tool that lets you sync your to-do list between different computers and devices. The source code can be found here:...
DOSBox is a DOS-emulator that uses the SDL-library. DOSBox emulates CPU:286/386 realmode/protected mode, Directory FileSystem/XMS/EMS, Tandy/Hercules/CGA/EGA/VGA/VESA graphics, a SoundBlaster/Gravis Ultra...
GnuCash is personal and small-business financial-accounting software, freely licensed under the GNU GPL and available for GNU/Linux, BSD, Solaris, Mac OS X and Microsoft Windows. 21 languages; Designed to be...
ownCloud – web services under your control. Current features: file management, WebDAV access, share via public link, music streaming, users & groups, OpenID, LDAP In development:...
pyLoad is a fast, lightweight and full featured download manager for many One-Click-Hoster, container formats like DLC, video sites or just plain http or ftp links. It aims for low hardware requirements and...
Barcode Scanner. Scan barcodes on CDs, books, and other products, then look up prices and reviews, or search for a word in a book and find where it occurs. You can also scan QR Codes containing URLs, contact...
OpenVPN is a full-featured open source SSL VPN solution that accommodates a wide range of configurations, including remote access, site-to-site VPNs, Wi-Fi security, and enterprise-scale remote access...
Anki is a program which makes remembering things easy. Because it is a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the...
Aptoide client is an open source Android application that allows one to install software. The installed software comes from multiple sources called "repositories". Each repository has multiple...
inSSIDer is a free Wi-Fi network scanner for Windows (including Windows 7 and 64bit editions). A cross-platform version is in the works and a Linux version is currently in alpha stage. inSSIDer lists...
Sky Map (formerly the Google Sky Map) turns your Android-powered mobile phone into a window on the night sky. Figure out what you're looking at: Point your phone at the sky, and Sky Map will show the...
Zotero is a free, easy-to-use Firefox extension or standalone program to help you collect, organize, manage, search and cite your research sources directly in your favourite word processor, with 100 MB free...
KeePassDroid is an implementation of the KeePass Password Safe for the Android platform.