Ubiquity is described as 'A Mozilla Firefox extension, Ubiquity is a collection of quick and easy natural-language-derived commands that act as mashups of web services. Allowing users to get information and relate the same to current and other webpages' and is an app in the Web Browsers category. There are six alternatives to Ubiquity for a variety of platforms, including Online / Web-based, Mac, Windows, Linux and Chrome OS. The best alternative is Greasemonkey, which is both free and Open Source. Other great apps like Ubiquity are YubNub (Free, Open Source), Shortwave (Free), Site Connector (Free) and Quix (Free).
Greasemonkey is a Firefox extension that allows you to customize the way webpages look and function. Hundreds of scripts are already available for free. And if youre the tinkerer sort, you can also write your own.
YubNub is a networking web service with a command line–style interface. It allows users to create and use commands which are mapped to webpages and web services.FeaturesCommands can be created for most websites and services.
Shortmarks is like an enhanced speed dial for web browsing. It lets you visit and search your favorite web sites by only typing a letter or two. You can skip the front page of any search engine and go straight to the results.