Free and Open Source Software
Pencil2D
Pencil2D is a simple, yet powerful 2D animation, drawing and painting application that lets you create traditional hand-drawn animation using both bitmap and vector graphics. Pencil2D is released as free and open-source software under the GNU General Public License and uses the Qt framework. With Pencil2D you can seamlessly switch between raster and vector workflows, allowing you to sketch, ink & paint on the go.
LinkAce
LinkAce is a free and open-source, self hosted archive to store and organize links of your favorite websites. It allows you to host your own service where you can store links and search though them and categorize them with the helpd of tags and lists. LinkAce also provides automated backups and monitoring of your self hosted service.
kodeWeave
kodeWeave is a free and open source, realtime coding playground for Markdown, HTML, CSS and Javascript. It shares many similarities with platforms like JSFiddle and JSBin, while being designed to work specifically offline across multiple devices, including mobile. If you every used JSFiddle, JSbin, Dabblet, Liveweave, CodePen, CSSdeck, CSSdesk, Tinkerbin, d3 playground, Plunker or Pastebin kodeWeave will feel familiar.
Lutris
Lutris is a free and open-source, Linux-based operating system developed for gaming. With Lutris you can manage your game library, and install and launch games with no setup. Lutris is integrated with GOG, Steam, Battle.net, Origin, Uplay and many other games stores. The operating system is released under the GNU General Public License and is community built, anyone is free to contribute and use the platform.
RSSOwl
RSSOwl is a powerful RSS application that can help you organize, search and read all your news feeds in a comfortable way. RSS Owl is released as open-source software and can be downloaded and used for free, without limitations. With RSS Owl it's easy to stay on-top of the latest news and information that you like. All feeds can be categorized with labels and articles can be saved individually, and when new content in your feed is released RSS Owl automatically notify you through its notification system. RSS Owl is developed as a cross-platform software and runs on all major platforms including macOS, Linux, and Windows.
FileZilla
Filezilla is an free and open-source FTP software that can be used to transfer files over the FTP, FTPS and SFTP protocol. The application consist of FileZilla Client and FileZilla Server. The FileZilla Client is used to connect to FTP services whereas FileZilla Server can be used to create and host your own FTP server.
Apache Airavata
Apache Airavata is a software framework that enables you to compose, manage, execute, and monitor large scale applications and workflows on distributed computing resources such as local clusters, supercomputers,computational grids, and computing clouds.
Shotwell
Shotwell is a free and open-source image manager designed to orginize personal photos on Linux and the GNOME desktop environment.