There are a number of tools that can be used to graph hashtag usage. Some of the most popular tools include:

• Keyhole: Keyhole is a social media analytics tool that allows you to track hashtag usage on Twitter and Instagram. It provides a variety of metrics, including the number of posts, impressions, and reach. Keyhole also allows you to create custom reports and graphs.
• Hashtagify: Hashtagify is another social media analytics tool that allows you to track hashtag usage on Twitter and Instagram. It provides similar metrics to Keyhole, but it also includes information about related hashtags and top influencers.

• Brand24: Brand24 is a social media monitoring tool that allows you to track hashtag usage on Twitter, Facebook, and other social media platforms. It provides a variety of metrics, including the number of posts, mentions, and reach. Brand24 also allows you to create custom reports and graphs.
• TweetBinder: TweetBinder is a social media analytics tool that allows you to track hashtag usage on Twitter. It provides a variety of metrics, including the number of posts, impressions, and reach. TweetBinder also allows you to create custom reports and graphs.

The best tool for you will depend on your specific needs and requirements. If you are looking for a comprehensive tool that provides a variety of metrics, then Keyhole or Brand24 are good options. If you are looking for a more affordable option, then TweetBinder or Hashtagify may be a better choice.

Here are some factors to consider when choosing a tool to graph hashtag usage:

• The types of social media platforms you want to track.
• The metrics you want to track.
• The price of the tool.
• The ease of use of the tool.

Once you have chosen a tool, you can start tracking hashtag usage. This information can be used to track the performance of your hashtag campaigns, identify trending hashtags, and find new influencers.