KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
Pho.to - Improve and play with your digital pictures at Pho.
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
Image Plus - Premium Multimedia Apps for macOS, iOS and Windows
QUCS - Qucs, briefly for Quite Universal Circuit Simulator, is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit.
Preseters - Preseters is an app by ArtHouse Design Studio that lets you access the complete list of available presets for Lightroom so you can download them to your mobile phone without much of a stretch.