DevToys is a free and open source developer application for Linux, Windows and MacOS. It comes with more than 30 default offline tools developer friendly tools like Json converter & formatter, Base64 Text & Image converter, JWT encoder and decoder, Text comparer, Hash & QR code generator and many more. It also comes with separate DevToys CLI app for command-line support.
Download DevToys [Linux, Windows, MacOS]
Install DevToys on Ubuntu
Download the latest DevToys in .deb package file from the above download file and save it in your Downloads folder. Now open the terminal app (ctr+alt+t) and run below DevToys apt install command. It will install the latest DevToys in your system. DevToys for Linux is still in pre stable stage.
sudo apt install ./Downloads/devtoys_linux_x64.deb
After the installation you can open DevToys using below command.
sudo devtoys
You can also open it via the Show Apps Ubuntu dock menu.