4K Video Downloader is a video and audio downloader for YouTube, Vimeo, Facebook, Dailymotion, Metacafe, and other video-sharing services. It features video quality up to 4k resolution, FLV, MP4, and MKV support, extraction of audio to the MP3 format, and a "Smart Mode" for fast downloads.
AbulEdu Calcul Mental is a software tool that trains children in mental calculation as stipulated by the French Ministry of Education for primary schools. Activities include addition, subtraction, multiplication of integers, addition tables (+2 to +9), times tables (x2 to x9), additional additives (to 10, to 100, to 1000), multiples (of 5, 10, 15, 20, 25 and 50), and orders of magnitude (with additions, subtractions, and multiplications). There is also an editor and selective launcher.
Bitcoin is a peer-to-peer electronic cash system that is completely decentralized, without the need for a central server or trusted parties. Users hold the crypto keys to their own money and transact directly with each other, with the help of a P2P network to check for double-spending.
Calligra is an integrated suite of applications that cover office, creative, and management needs. It offers applications on both desktop computers and mobile platforms like tablets and smartphones. OpenDocument Format (ODF) is used, making it compatible with OpenOffice.org, LibreOffice, and Microsoft Office. Calligra Suite contains the following applications: Calligra Words (word processor), Sheets (spreadsheets), Stage (presentations), Flow (diagrams and flowcharts), Kexi (visual database creator), Braindump (note taking), Plan (project management), Krita (drawing), and Karbon (vector graphics).
Clementine is a modern music player and library organizer. It is inspired by Amarok 1.4, focusing on a fast and easy-to-use interface for searching and playing your music. You can search and play your local music library, and listen to Internet radio from Last.fm, SomaFM, and Magnatune. It has tabbed playlists, the ability to import and export M3U, XSPF, PLS, and ASX, visualizations from projectM, the ability to transcode music into MP3, Ogg Vorbis, Ogg Speex, FLAC, or AAC, the ability to edit tags on MP3 and Ogg files, organize your music, and download missing album cover art from Last.fm. It has native desktop notifications on Linux (libnotify) and Mac OS X (Growl), as well as remote control using a Wii Remote, MPRIS, or the command line. It can copy music to your iPod, iPhone, MTP, or mass-storage USB player. It has a queue manager.
DaisyDuck provides the ability to playback Daisy 2.02 online books and local books (reachable directly on a physical media). The interface is simplified for quick handling, even for people with a handicap like partially sighted persons. Intuitive keyboard shortcuts provide an easy way to access the functionalities of the application and to navigate within books (by chapter and by paragraph). DaisyDuck automatically saves the position where the playback of a book was interrupted. Then, when this book is reloaded, the playback begins at the last position without any action of the listener.