Compare the Top Free Natural Language Processing Software as of October 2026

What is Free Natural Language Processing Software?

Natural language processing (NLP) software analyzes both written and spoken human languages and interprets them for translation, deep learning and automation purposes. Natural language processing software may also include natural language understanding (NLU) capabilities. Compare and read user reviews of the best Free Natural Language Processing software currently available using the table below. This list is updated regularly.

  • 1
    Google AI Studio
    Google AI Studio utilizes natural language processing (NLP) to enable machines to understand, interpret, and respond to human language in a meaningful way. NLP models can perform tasks like sentiment analysis, text summarization, translation, and chatbot interaction, allowing businesses to enhance customer engagement and automate language-based processes. The platform’s NLP tools can be customized to work with industry-specific terminology or fine-tuned for specialized tasks, ensuring that the AI-driven systems meet the unique needs of the business. Additionally, Google AI Studio provides robust support for managing large datasets, making it easier to build scalable NLP solutions.
    Starting Price: Free
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  • 2
    LM-Kit.NET
    The on-device NLP Toolkit for .NET processes large text volumes privately and instantly. It never sends data to the cloud. Core features include multilingual sentiment analysis, emotion and sarcasm detection, custom text classification, keyword extraction, and semantic embeddings for deep context. Dynamic sampling uses both CPU and GPU resources for maximum speed and efficiency.
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    Starting Price: Free (Community) or $1000/year
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  • 3
    Dialogflow
    Dialogflow from Google Cloud is a natural language understanding platform that makes it easy to design and integrate a conversational user interface into your mobile app, web application, device, bot, interactive voice response system, and so on. Using Dialogflow, you can provide new and engaging ways for users to interact with your product. Dialogflow can analyze multiple types of input from your customers, including text or audio inputs (like from a phone or voice recording). It can also respond to your customers in a couple of ways, either through text or with synthetic speech. Dialogflow CX and ES provide virtual agent services for chatbots and contact centers. If you have a contact center that employs human agents, you can use Agent Assist to help your human agents. Agent Assist provides real-time suggestions for human agents while they are in conversations with end-user customers.
  • 4
    Quaeris

    Quaeris

    Quaeris, Inc.

    Align analytics to your everyday business workflows. Your business relies on people, data and documents, but the process of using them is broken. QuaerisAI enables seamless downstream workflows across your People, Documents and Data Assets. Use natural language search on data, documents and collaborate in private or within Communities - all in one platform! QuaerisAI offers time savings of at-least 30 minutes to an hour/day/resource - imagine the productivity enhancements you give your users without the expense of buying and consolidating a bunch of AI tools. Quaeris can be rolled out to team of 10s or 1000s of users seamlessly within a matter of days - without much need of IT, and that is why IT & data teams love us!
    Starting Price: $100 per month
  • 5
    IBM watsonx Assistant
    IBM watsonx Assistant (Formerly Watson Assistant) is a market-leading enterprise conversational AI platform that allows you to build intelligent virtual and voice assistants that can provide customers with fast, consistent and accurate answers across any messaging platform, application, device or channel. Using artificial intelligence and large language models, watsonx Assistant learns from customer conversations, improving its ability to resolve issues the first time while removing the frustration of long wait times, tedious searches and unhelpful chatbots. Most chatbots try to mimic human interactions, frustrating customers when a misunderstanding arises. IBM watsonx Assistant is more than a chatbot. It knows when to search for an answer from a knowledge base, when to ask for clarity and when to direct users to a human agent for more assistance. And since it can be deployed in any cloud or on-premises environment – smarter AI is finally available wherever you need it.
    Starting Price: $140 per month
  • 6
    Google Cloud Natural Language API
    Get insightful text analysis with machine learning that extracts, analyzes, and stores text. Train high-quality machine learning custom models without a single line of code with AutoML. Apply natural language understanding (NLU) to apps with Natural Language API. Use entity analysis to find and label fields within a document, including emails, chat, and social media, and then sentiment analysis to understand customer opinions to find actionable product and UX insights. Natural Language with speech-to-text API extracts insights from audio. Vision API adds optical character recognition (OCR) for scanned docs. Translation API understands sentiments in multiple languages. Use custom entity extraction to identify domain-specific entities within documents, many of which don’t appear in standard language models, without having to spend time or money on manual analysis. Train your own high-quality machine learning custom models to classify, extract, and detect sentiment.
  • 7
    Clarifai

    Clarifai

    Clarifai

    Clarifai is a leading AI platform for modeling image, video, text and audio data at scale. Our platform combines computer vision, natural language processing and audio recognition as building blocks for developing better, faster and stronger AI. We help our customers create innovative solutions for visual search, content moderation, aerial surveillance, visual inspection, intelligent document analysis, and more. The platform comes with the broadest repository of pre-trained, out-of-the-box AI models built with millions of inputs and context. Our models give you a head start; extending your own custom AI models. Clarifai Community builds upon this and offers 1000s of pre-trained models and workflows from Clarifai and other leading AI builders. Users can build and share models with other community members. Founded in 2013 by Matt Zeiler, Ph.D., Clarifai has been recognized by leading analysts, IDC, Forrester and Gartner, as a leading computer vision AI platform. Visit clarifai.com
    Starting Price: $0
  • 8
    Tome

    Tome

    Magical Tome

    Unlock your best work with Tome's AI-powered storytelling format. Type in a prompt and watch Tome generate entire narratives from scratch or create additional content pages within seconds. Use our image tile to source or create compelling images, tailor-made to bring your idea to life. Your narrative deserves more than text and images. Easily share a prototype, add 3D renderings, trim a video, or embed live content from the web to make your point more compelling. Focus on your idea, and Tome will take care of the rest. Drag-and-drop creation, responsive pages, and one-click themes mean you don't waste time aligning content or applying brand colors. Embed anything from the web, in one place. Live integrations with your favorite tools like Figma let you showcase your existing work as a connected part of your story.
    Starting Price: Free
  • 9
    Watson Natural Language Understanding
    Watson Natural Language Understanding is a cloud native product that uses deep learning to extract metadata from text such as entities, keywords, categories, sentiment, emotion, relations, and syntax. Get underneath the topics mentioned in your data by using text analysis to extract keywords, concepts, categories and more. Analyze your unstructured data in more than thirteen languages. Out-of-the-box machine learning models for text mining provide a high degree of accuracy across your content. Deploy Watson Natural Language Understanding behind your firewall or on any cloud. Train Watson to understand the language of your business and extract customized insights with Watson Knowledge Studio. Maintain ownership of your data with the assurance that your data is safe and secure. IBM will not collect or store your data. By using our advanced natural language processing (NLP) service, we give developers the tools to process and extract valuable insights from unstructured data.
    Starting Price: $0.003 per NLU item
  • 10
    IBM Watson Discovery
    Find specific answers and trends from documents and websites using search powered by AI. Watson Discovery is AI-powered search and text-analytics that uses innovative, market-leading natural language processing to understand your industry’s unique language. It finds answers in your content fast and uncovers meaningful business insights from your documents, webpages and big data, cutting research time by more than 75%. Semantic search is much more than keyword search. Unlike traditional search engines, when you ask a question, Watson Discovery adds context to the answer. It quickly combs through content in your connected data sources, pinpoints the most relevant passage and provides the source documents or webpage. A next-level search experience with natural language processing that makes all necessary information easily accessible. Use machine learning to visually label text, tables and images, while surfacing the most relevant results.
    Starting Price: $500 per month
  • 11
    Deep Talk

    Deep Talk

    Deep Talk

    Deep Talk is the fastest way to transform text from chats, emails, surveys, reviews, social networks into real business intelligence. Understand what's inside communications with customers with our easy-to-use AI platform. Unsupervised deep learning models to analyze your unstructured text data. Deepers are pre trained deep learning models to get custom detections inside your data. Use the "Deepers" API to analyze text in real time and tag text or conversations. Reach the people who need a product, request a new feature or express a complaint. Deep Talk offers cloud-based deep learning models as a service. You just need to upload your data or integrate one of the support services to extract all the insights and information from WhatsApp, chat conversations, emails, surveys or social networks.
    Starting Price: $90 per month
  • 12
    FirstLanguage

    FirstLanguage

    FirstLanguage

    Our Natural Language Processing(NLP) APIs provide best-in-class accuracy at an affordable rate and cover all aspects of NLP under a single roof. Save weeks of time training and creating language models. Take advantage of our best-in-class APIs to kickstart your app development. We provide the building blocks to create your own apps effectively like chatbots, sentiment analysis, etc. Text classification on multiple domains and 100+ languages. Perform effective sentiment analysis. We grow when your business does. So we have put together simple pricing that allows you to easily scale your business when it needs to evolve. Perfect for individual developers who are creating apps or building proof of concepts. Head to the Dashboard and get your API Key. Place this in the header of all your API calls. Use our SDK in your preferred language to start coding. Or you can refer to the auto-generated code blocks provided in 18 programming languages.
    Starting Price: $150 per month
  • 13
    Anania

    Anania

    Anania

    Anania is an AI-powered self-service analytics platform that allows you to ask analytical questions in plain English and get answers instantly. Powered by revolutionary AI, Anania acts like your virtual data assistant. Once connected with your data source, Anania understands your questions as people do. Ask your questions in plain English without any structured phrasing and Anania will understand, analyze your data & provide answers in terms of numbers, text, tables, and charts. No setup procedure is required. Once integrated, Anania automatically learns from your data and is ready to answer various questions, from simple average calculation questions to finding correlations and complex analyses. No code approach allows everyone to use it without having any analytical background. You can upload your file, connect your database or integrate Anania with your favorite BI tool-Anania supports all these data sources.
    Starting Price: $0
  • 14
    Spark NLP

    Spark NLP

    John Snow Labs

    Experience the power of large language models like never before, unleashing the full potential of Natural Language Processing (NLP) with Spark NLP, the open source library that delivers scalable LLMs. The full code base is open under the Apache 2.0 license, including pre-trained models and pipelines. The only NLP library built natively on Apache Spark. The most widely used NLP library in the enterprise. Spark ML provides a set of machine learning applications that can be built using two main components, estimators and transformers. The estimators have a method that secures and trains a piece of data to such an application. The transformer is generally the result of a fitting process and applies changes to the target dataset. These components have been embedded to be applicable to Spark NLP. Pipelines are a mechanism for combining multiple estimators and transformers in a single workflow. They allow multiple chained transformations along a machine-learning task.
    Starting Price: Free
  • 15
    Arria NLG Studio
    Arria NLG Studio is an Artificial Intelligence (AI) solution developed by Arria NLG for use by companies both in the enterprise market as well as small and medium size businesses. The Arria NLG Studio platform empowers companies to replicate the human process of expertly analyzing and communicating data insights in language humans can quickly understand. Arria’s software is used to generate insights in language such as financial analysists, spotting trends, identifying problems, and forecasting what's likely to happen next. Using Arria's patented NLG technology, the Company has created mulitiple SaaS-based solutions which provide industry specific reports with relevant details, in seconds. This is the next-generation of business intelligence and data reporting platforms. Arria NLG Studio offers API access and can be easily integrated with any software platform.
  • 16
    E42 AI Accounts Payable Automation
    From effortlessly managing a deluge of invoices across various channels including email, vendor portals, chats, and more to seamlessly integrating with all finance ERPs including Oracle NetSuite, SAP, QuickBooks, etc., Neil handles the entire AP process without human intervention. This means AP teams get to focus on strategic initiatives while most of the day-to-day AP tasks are performed automatically by Neil with accuracy more than 85%. Going beyond the traditional RPA and OCR-based automation, Neil leverages advanced ICR, AI-powered workflows, and real-time vendor communication to ensure accurate data extraction, efficient processing, and timely payments—resulting in happier vendors and better discount opportunities for the enterprise. With Neil on your team, achieve remarkable 90% straight-through processing (STP) rates, eliminate human errors, and optimize vendor relationships like never before.
    Starting Price: $0
  • 17
    Secuvy AI
    Secuvy is a next-generation cloud platform to automate data security, privacy compliance and governance via AI-driven workflows. Best in class data intelligence especially for unstructured data. Secuvy is a next-generation cloud platform to automate data security, privacy compliance and governance via ai-driven workflows. Best in class data intelligence especially for unstructured data. Automated data discovery, customizable subject access requests, user validations, data maps & workflows for privacy regulations such as ccpa, gdpr, lgpd, pipeda and other global privacy laws. Data intelligence to find sensitive and privacy information across multiple data stores at rest and in motion. In a world where data is growing exponentially, our mission is to help organizations to protect their brand, automate processes, and improve trust with customers. With ever-expanding data sprawls we wish to reduce human efforts, costs & errors for handling Sensitive Data.
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