Sideline from Yahoo is a free Adobe Air-based tool that will enable you to search for and locate tweets based around a particular term. For example, if you wanted to search for 'vnunet.com', simply set this up as a particular term of interest and Sideline will show any tweet that references this search term. Sideline from Yahoo is based on Adobe Air so will work with any operating system that Air supports. Note that it's not a tool for adding your tweet to a conversation.
Sideline from Yahoo link.
Cotton seedling freezes to death as Chang'e-4 shuts down for the Moon's 14-day lunar night
Fortnite easily out-earns PUBG, Assassin's Creed Odyssey and Red Dead Redemption 2 in 2018
Meteor showers as a service will be visible for about 100 kilometres in all directions
Saturn's rings only formed in the past 100 million years, suggests analysis of Cassini space probe data
New findings contradict conventional belief that Saturn's rings were formed along with the planet about 4.5 billion years ago