Open Source Software for Linux
Apache Flink
Apache Flink is a free and open-source stream framework used for processing big data. The software is developed openly by the Apache Software Foundation and the community. The core of Apache Flink is written in Java and Scala as a distributed streaming data-flow engine. Data-flows executed by Flink programs are pipelined and run parallel to maximize efficiency.
Darktable
Darktable is a free and open-soource photo editing software created for photographers, by photographers. Darktable is specifically designed for non-destructive raw photo post-production editing. The Darktable development community is comprised of avid photographers that has a good understanding of real world problems, challenges, and workflows.
Krita
Krita is a professional free and open-source painting software created and maintained by artists. The main focus of the project is to create top quality painting tools that everyone can afford and enjoy. Krita features an OpenGL-accelerated canvas, colour management support, an advanced brush engine, non-destructive layers and masks, group-based layer management, vector artwork support and switchable customisation profiles.
Transmission
Transmission is a file sharing application that utilize torrent techonlogy. The software provides UPnP and NAT-PMP port forwarding and features you come to expect from torrent applications like web seed support, watch directories, tracker editing, global and per-torrent speed limits, and much more.
GIMP
GIMP is a free and open-source raster graphics editor developed by the Free Software Foundation (GNU). The software is a perfect fit for anyone looking for a free and open alternative to Adobe Photoshop. GIMP can be used for photo retouching, image editing and composition. The software is commonly know within the Linux community but is available under the GPLv3+ licenses for macOS and Windows as well.
Docker Compose
Docker Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application's services. Then, with a single command, you create and start all the services from your configuration. To learn more about all the features of Compose, see the list of features.
LibreOffice
LibreOffice is a free and open source suite of applications for creating text documents, spreadsheets, presentations and more. With LibreOffice you can open almost any legacy document, and it's the only free and open source office suite available on all major desktop platforms. It features a clean interface and feature-rich tools help you unleash your creativity and enhance your productivity. The suite includes the word processor LibreOffice Writer, the spredsheet LibreOffice Calc, the presentation program LibreOffice Impress, the vector graphics editor LibreOffice Draw, the database management program LibreOffice Base and the math tool LibreOffice Math.
Double Commander
Double Commander is a cross-platform open source file manager with two panels side by side. The application takes inspiration from Total Commander and brings new features and ideas to file management. With Total Commander all archives are handled like sub directories and you can easily copy files to and from archives. Supported archive types include ZIP, TAR, GZ, BZ2, XZ, LZMA, 7Z, RPM, CPIO, DEB, RAR and ZIPX.
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.
Akira UX
Akira UX is a free an open-source graphic design software built with Vala and GTK. The application offers a fast approach to UI and UX Design, mainly targeting web designers and graphic designers. Akira UX is available for all major Linux distributions, and through the elementary OS AppCenter.