Older versions of Ubuntu comes with a feature to set your wallpaper to a solid color or primary and secondary color for gradient look via the Background settings menu. But Ubuntu removed this feature in the newer versions of Ubuntu. But you can set and change you background to the solid color via terminal. Follow below steps to set the solid colour in your background instead of wall image.
B1 Archiver is a free archive manager for Windows, Linux, Mac and Android. Using this you can compression, decompression and encrypt your files. It supports b1, zip, jar, xpi, rar, 7z, arj, bz2, cab, deb, gzip, tgz, iso, lzh, lha, lzma, rpm, tar, xar, z, dmg file formats. It supports split and password-protected archives. You can encrypt with 256 bit AES encryption with password.
Subtitle Edit is a free and open source video subtitles editor for Windows and Linux. Using this you can edit, create, adjust, sync and translate subtitle lines for your video. It is released under GNU General Public License v3.0. It comes with audio visualizer, build-in Video player, error fixing wizard, Spell checking, Typewriter and karaoke effects, and auto translation. You can export your subtitles to PNG, Adobe Encore FAB image script, VobSub, Blu-ray sup, EBU stl, PAC, and plain text. You can convert your subtitles between more that 280 file formats.
JabRef is a free and open source bibliography reference manager for Linux, Windows and MacOS. It supports BibTeX and BibTeX BibLaTeX standard LaTeX bibliography format. You can import over 15 reference formats and compare with Google Scholar, Springer or MathSciNet. It also comes with browser extensions to to import directly from browser. You can fetch details based on ISBN, DOI, PubMed-ID and arXiv-ID. It also comes Word and LibreOffice, OpenOffice for inserting and formatting citations support.
MeshLab is a free and open source 3D editing and processing tool for unstructured 3D triangular meshes for Linux, Windows and MAcOS. Using MeshLab you can edit, clean, heal, inspect, render and convert meshes in your system. It comes with simple UI but powerful features. It is released under GNU General Public License v3.0. It is based on C++ mesh processing library VCGlib. You can process raw data produced by 3D digitization tools/devices and for prepare models for 3D printing.
QSampler is a free and open source LinuxSampler frontend GUI for Linux. LinuxSampler is streaming capable pure software audio sampler. It is a lite weight audio sampler but with high stability, efficiency and very low latency. It is written in C++ and qt and released under open source GNU General Public License. It is available as a portable AppImage format for Ubuntu. First go to the below QSampler Audio Sampler download link and download the latest version in .AppImage file format.
Dibuja is a free and open source paint application for Linux. Using this you can create simple drawing, edit your images, resize and crop your images, add text on your images. You can use this application as a Microsoft paint or Paintbrush alternative on Linux. You can also add effects on your drawing and images. It comes with gray scale, blur, invert, insta 1977, emboss, threshold, vignette and sharpen image effects. It is released under GNU GPL v3 license.
Image Mosaic Wall is a free and open source Image Wall Photo creator using lot of other images for Linux and MacOS. It will create a mosaic effect photo using other images. It is released under GNU GENERAL PUBLIC LICENSE Version 3. It comes with easy to use user interface. Just select your output image and the image folder that filled with lot of images. Set the Variation output resolution and the Grid settings. After that click the Create Mosaic button. You can also save the image.
Hardinfo is a free and open source system information and benchmark tool for Linux. It comes with good graphical user interface. Using this you can get hardware and some software information about your system. It is a clean and neat graphical UI application in this category.You can generate all your system report in HTML or in plain text. Some other important features are benchmark result synchronization and get information on remote computers. It is released under GNU General Public License.
Dino is a free and open source secure Jabber/XMPP chat client for Linux. XMPP (Extensible Messaging and Presence Protocol) is xml based open communication protocol. It is released under GNU General Public License v3.0. It is based on GTK+ and Vala. It supports end-to-end encryption via OMEMO and OpenPGP. you can also disable read and typing notifications in your chat. It supports Private, group, and public chats, images and files sharing and multiple accounts.
