Photoscape - high quality photo editing software, that enables you to fix and enhance photos.

Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.

Pixelmator - Pixelmator is an image-editing application for Mac and iPad.

Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.

Pixlr - Pixlr® makes it easy to transform everyday images into stunning works of art.

Wondershare PDFelement - All-in-one PDF editor