PicMonkey is a great web tool for photo editing. It has everything you might need to edit your image from the basic to advanced features. PicMonkey is a good option for adding text to your image.
Sketch for Evernote is another of my favourite tools for working on pictures. It basically allows you to add text, shapes and sketches to images.
I love Thinglink and I use it to add interactive features to my images. You can links and videos to images using Thing. you should definitely try it.
It is useful when you need to protect your copyrights or if you want to add comments
to your photos.