Portfolio Gallery is a great plugin for adding specialized portfolios or gallery to your site. There are various view options for the images to choose
Creative Image Slider is a responsive jQuery image slider with amazing visual effects.
Portfolio plugin allows you to create a page containing the information about your past projects.
Aweosome Plugin for filterable portfolio
This is a custom module to extend NextGEN Gallery with a custom view that places the thumbnails in the left column, places a large image in the right