Description: Google Sidewiki was a social annotation tool that allowed users to make comments and annotations alongside web pages from 2009 to 2011. It enabled collaborative annotation functionality for information on websites.
Type: software
Description: LinkedIn is a business and employment-oriented online service that operates via websites and mobile apps. Launched on May 5, 2003, the platform is mainly used for professional networking and career development, and allows job seekers to post their CVs and employers to post jobs.
Type: software
Pricing: Freemium