Compare the Top Free Sentiment Analysis Tools as of April 2025

What are Free Sentiment Analysis Tools?

Sentiment analysis tools are software that uses AI to deduce the sentiment from written language. Sentiment analysis software is useful for monitoring the sentiment and feelings about your brand or business online. Sentiment analysis software tools utilize natural language processing in order to analyze sentiment, and arrive at a conclusion on overall sentiment about your brand. Sentiment analysis tools can be used to scan social media and the web at large to generate a report on how people feel about the brand or terms you are tracking. Being aware of overall brand sentiment can help you make more informed business and product decisions. Compare and read user reviews of the best Free Sentiment Analysis tools currently available using the table below. This list is updated regularly.

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    Fullstory

    Fullstory

    Fullstory

    Fullstory is a behavioral data platform that surfaces the sentiment buried between clicks, revealing the untold story behind consumer behaviors. From building better fraud detection and forecasting to creating personalization that genuinely resonates, Fullstory enables product, engineering, and data teams to connect sentiment signals with other data sources to intentionally design the next best action. Providing deeper and more immediately actionable insights beyond conventional web and product analytics that can only surface what’s happening but not why, Fullstory is the only behavioral data platform that provides the context needed to build in-the-moment experiences that drive revenue. With automatically captured, indexed, and semantically structured first-party data— served up to your data ecosystem or through our product analytics with session replay, Fullstory’s behavioral data is ready-made for AI. Enterprises no longer waste countless hours and resources analyzing data.
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