Abduction is described as 'Right click on any web page, frame or iframe, click "Save Page As Image..." and then resize the selection around the piece you want to save' and is an app in the Photos & Graphics category. There are more than 50 alternatives to Abduction for a variety of platforms, including Windows, Mac, Google Chrome, Online / Web-based and Firefox. The best alternative is ShareX, which is both free and Open Source. Other great apps like Abduction are Greenshot (Freemium, Open Source), LightShot (Free), FastStone Capture (Paid) and PicPick (Free Personal).
TeenyGrab is a free alternative to TinyGrab. TinyGrab is a popular application for quickly uploading screenshots, and sharing them. The only problem is, the full version (with features such as uploading to a custom FTP server) costs $$$.
Fii is a completely free online sharing application which brings visualization to your online conversation. You can show your co-worker, friend, teacher, boss, parents or whomever you want a part of your screen with a single mouse click.
Capture screen and edit screenshot with Annotation Pilot. This screen capture software allows you to add text and graphics to your screenshot, save your screenshot as a graphic file or send it by email.
Pixtick, an online application, can capture screenshot from browser. No download or installation required. Its having robust annotation tools to annotate and edit screenshots and images from hard drive or from web.