Snapseed

A simple image-editor and effects tool originally published by Nik Software, but then by Google when it took that company over. Google has since discontinued the desktop version of Snapseed, but it still exists as a free app for Android and iOS smart devices.

Snapheal

Snapheal is a Mac-only software tool for removing unwanted objects from pictures. It does this using one of three removal algorithms which use surrounding detail to produce an ‘invisible’ repair. It also offers manual cloning tools, and it works as a standalone app or a plug in.

Silver Efex Pro

Software plug-in for creating authentic-looking black and white film looks, and part of the Google Nik Collection. Silver Efex Pro can replicate the look of classic black and white materials and darkroom effects. It also offers ‘control points’ for localised dodging and burning.

Sharpener Pro

Software plug-in for sharpening images and part of the Google Nik Collection. It comes in two parts – Sharpener Pro Raw Presharpening for enhancing images straight from the camera, and Sharpener Pro Output Sharpening for preparing images for printing on different devices.

Plug in

A software tool designed not to be used on its own, but as an add-on to programs like Photoshop and Lightroom. Plug-ins typically offer specialised tools and effects not usually found in regular image editing programs. See also: Google Nik Collection review

Pixelmator

Low-cost image-editor for Mac and iOS which has a clean and simple interface but powerful editing, retouching, selection and layering tools and a range of customisable effects. It also has painting tools and vector drawing tools, making it equally suitable for art projects, illustrations and diagrams.

Photography Plan (Adobe)

A subscription plan which includes Lightroom CC and Photoshop CC. It’s designed for photographers and does offer very good value for money compared to the old scheme, where you paid a much larger amount for a ‘perpetual’ licence, and also had to pay to upgrade to new versions.

ON1 Photo

An all-in one image organising and editing program which includes a large array of preset effects and manual tools for manually adjusting and ‘stacking’ effects in layers. Includes tools for black and white and portrait photography and also works as a plug-in for Photoshop and Lightroom.