Yes, there are several software tools that can be used to scrape discussions on Twitter. Some examples include:

Twint: This is an open-source Python library that allows you to scrape Twitter data and tweets without using the Twitter API. Twint can be used to collect tweets, conversations, user profiles, and more.

TweetDeck: This is a Twitter management tool that allows you to monitor, engage, and analyze your Twitter activity. TweetDeck includes a feature called "search columns" that allows you to search for specific terms or hashtags and view the resulting tweets in real-time.

Twitter Search API: The Twitter Search API is an official API provided by Twitter that allows developers to search for tweets and access other data from the Twitter platform. You can use the API to search for tweets containing specific keywords or hashtags, and retrieve the resulting data in JSON format.

It's important to note that Twitter has strict rules around the use of its data, and it's not allowed to scrape Twitter data for spamming or automated follow-back purposes. Make sure to review Twitter's developer policies before using any of these tools.