Best Free Real-Time Analytics Tools in 2026

Stream, contextualize, and analyze real-time operational data to power AI-driven industrial operations.

4.5/5 across G2 and Capterra · 94 ratings, Sep 2026

HiveMQ is an industrial data platform purpose-built to bring operational data from the edge into the enterprise. It provides a robust MQTT platform for connecting, streaming, and managing real-time data at scale, enabling organizations to build resilient data backbones for mission-critical operations. The platform focuses on unifying OT and IT data, contextualizing it with structure and governance, and then analyzing it to generate insights. HiveMQ is designed to feed trusted, real-time data to AI models, facilitating agentic AI systems that can automate decisions and continuously improve operational outcomes. It supports a full customer journey from connecting devices and systems via MQTT, to contextualizing data for a shared understanding, analyzing patterns for insights, and finally acting on those insights with human or AI intervention. The platform is ideal for industries like manufacturing, energy, transportation, and data centers, aiming to reduce downtime, optimize efficiency, and accelerate AI transformation.

Real-time web analytics with heatmaps

4.6/5 across G2 and Capterra · 71 ratings, Sep 2026

Clicky shows what's happening on your website right now. Real-time analytics with heatmaps, uptime monitoring, and visitor details-focused on immediate insight rather than next-day reports. Individual visitor tracking shows complete session activity. Heatmaps reveal where users click. The interface prioritizes live data over historical analysis. Site owners who need real-time visibility into traffic and behavior choose Clicky for analytics that update as things happen.

Real-time analytics database for instant insights from any data, at any scale, with SQL.

4.4/5 on G2 · 85 ratings, Sep 2026

CrateDB is a real-time analytics database designed to ingest and instantly query any data at scale. It enables users to execute complex aggregations, ad-hoc joins, hybrid search, and AI feature queries in seconds through its powerful distributed SQL engine. The platform is built for speed, offering turbocharged aggregations on billions of records in milliseconds, powered by columnar storage. It caters to businesses needing immediate access to real-time data for decision-making, anomaly detection, and workflow optimization. CrateDB supports various data types including relational, JSON, time-series, geospatial, full-text, and vector data within a single system. Its dynamic schema and indexing adapt to evolving data structures without interrupting operations, ensuring real-time data availability upon ingestion. With PostgreSQL compatibility, it integrates easily with third-party tools like Grafana and Tableau, and its vector store allows seamless integration with AI/ML tools and LangChain, offering flexibility in choosing LLMs and embedding algorithms. CrateDB is available as a fully managed service (DBaaS) or for deployment on preferred infrastructure, with an open-source licensing model to prevent vendor lock-in.

AI-powered session replays, error tracking, and analytics for optimizing user experience.

4.9/5 on G2 · 52 ratings, Sep 2026

Zipy is an AI-driven platform designed to help engineering, product, and marketing teams understand user behavior, detect errors, and optimize conversions. It provides AI-powered session replays that automatically identify and prioritize UI bugs and user frustration points, eliminating the need to manually sift through countless recordings. The platform translates technical errors into user-facing messages, making issues understandable for both technical and non-technical teams. Beyond session replays, Zipy offers robust error tracking capabilities, capturing frontend JavaScript errors and API failures across various frameworks like React, Angular, and Vue.js. It provides real-time monitoring, smart alerts, and detailed context for debugging, allowing teams to quickly identify, prioritize, and resolve issues. By unifying user session replay, frontend, and network monitoring, Zipy aims to accelerate growth by proactively addressing user experience problems and improving debugging efficiency.

Stateful computations over data streams for real-time and batch processing.

4.1/5 across PeerSpot and G2 · 36 ratings, Sep 2026

Apache Flink is an open-source distributed stream processing framework for stateful computations over unbounded and bounded data streams. It enables the development and execution of high-performance, scalable, and fault-tolerant applications for various use cases, including event-driven applications, real-time analytics, and data pipelines (ETL). Flink is designed for processing data at scale, offering capabilities like exactly-once state consistency, event-time processing, and sophisticated late data handling. It provides layered APIs, including SQL for stream and batch data, a DataStream API, and the ProcessFunction for fine-grained control over time and state. Its operational focus ensures flexible deployment, high availability, and the use of savepoints for application updates and scaling. This framework is ideal for developers and data engineers who need to build robust, real-time data processing applications that require strong consistency guarantees and high throughput. Its ability to handle very large state and scale out across clusters makes it suitable for demanding enterprise environments.

Real-time analytics database for high-speed queries

4.3/5 on G2 · 31 ratings, Sep 2026

Druid handles analytics queries at speeds that make traditional databases seem frozen. Slice and dice billions of rows interactively, with sub-second response times even for complex aggregations. The column-oriented storage and indexing are built specifically for OLAP workloads. Real-time ingestion means you can query data seconds after it arrives. Druid scales horizontally to handle whatever data volume you throw at it. Companies processing event streams or building analytics dashboards choose Druid when response time matters as much as throughput.

Unify your data stack with a fully-managed, serverless platform for real-time ETL/ELT and stream processing.

4.7/5 on G2 · 16 ratings, Sep 2026

Decodable is a fully-managed, serverless platform designed for real-time data movement and processing. It unifies ETL, ELT, and reverse ETL operations, allowing users to build and deploy data pipelines with ease. Built on open-source technologies like Apache Flink and Debezium, it abstracts away infrastructure complexities, enabling developers to focus on data transformation and analysis. The platform supports pipeline development using SQL, Java, and Python, and offers a rich library of pre-built connectors for various data sources and destinations. It's ideal for organizations looking to power AI applications with fresh, real-time data, improve analytics, and ensure operational excellence with built-in security and compliance. Decodable aims to simplify real-time data integration, reduce architectural complexity, and accelerate time-to-market for data-driven initiatives. Decodable provides stateful stream processing capabilities, ensuring exactly-once processing, fault tolerance, and automatic scaling. It caters to data engineers, backend developers, and data platform experts who need to ingest, transform, and deliver fast, reliable data for analytics, monitoring, and AI-driven decision-making without the operational burden of managing underlying infrastructure.

Real-time analytics APIs from streaming data, no infra needed

4.1/5 on G2 · 14 ratings, Oct 2026

Tinybird is a managed ClickHouse platform that lets developers build real-time analytics features without managing database infrastructure. It ingests streaming data via HTTP, Kafka, or S3 connectors, stores it in ClickHouse, and publishes SQL transformations as versioned REST APIs, all within seconds of data arrival. Features like zero-copy branching, safe schema migrations, and built-in BI tool connections make it practical for production workloads. SOC 2 Type II, HIPAA, and GDPR compliant, Tinybird serves SaaS, fintech, and observability teams shipping analytics into their products.

Open-source, real-time analytics and search database for the AI era.

4.7/5 on G2 · 5 ratings, Sep 2026

Apache Doris is an open-source, real-time analytical database designed for high-performance data analytics and search. It supports both micro-batch and streaming data ingestion, allowing for real-time updates, appends, and pre-aggregation of data. The database is optimized for high-concurrency and high-throughput queries, leveraging a columnar storage engine, Massively Parallel Processing (MPP) architecture, a cost-based query optimizer, and a vectorized execution engine. This database is ideal for organizations needing to perform real-time analytics on large datasets, especially those integrating with data lakes (like Hive, Iceberg, Hudi) and traditional databases (MySQL, PostgreSQL). It caters to developers and data engineers who require a scalable, distributed system capable of handling complex data types, text searches, and seamless integration with BI tools and external compute engines like Spark and Flink. Its distributed design ensures linear scalability and efficient resource management through workload isolation and tiered storage, supporting both shared-nothing and storage-compute separation architectures.

Unlock real-time insights from petabyte-scale data with ultra low-latency analytics.

Apache Pinot is an open-source, distributed OLAP (Online Analytical Processing) datastore designed for lightning-fast insights and real-time analytics. Originally developed at LinkedIn, it provides ultra low-latency queries at extremely high throughput, making it suitable for user-facing analytical applications. Pinot is built for businesses and developers who need to perform complex aggregations and filtering on large datasets with sub-second response times. Its distributed architecture and columnar storage enable effortless scaling and cost-effective data-driven decisions. It supports both batch and streaming data ingestion from various sources like Kafka, Pulsar, Kinesis, Hadoop, and S3, allowing for a unified view of data. Key benefits include the ability to serve hundreds of thousands of concurrent queries per second, versatile indexing options for optimized performance, and built-in upsert functionality to handle frequently updated records efficiently. Its standard SQL query interface and multitenancy features further enhance its usability and manageability for diverse analytical workloads.

High-performance analytical database

StarRocks provides high-performance analytics database. Real-time OLAP that's fast-analytics queries at speed. The performance is impressive. The compatibility helps migration. The real-time focus is clear. Teams needing fast analytics consider StarRocks for high-performance OLAP.

Unify data across databases, applications, and clouds in real time for AI-powered insights.

Striim is a real-time data integration and streaming platform designed to capture, process, and deliver data continuously across various sources and destinations. It leverages Change Data Capture (CDC) to move data from databases, applications, and cloud environments, enabling organizations to build real-time data pipelines. The platform is built for enterprises looking to operationalize AI and machine learning by providing AI-ready data in real-time. It offers a complete solution for data unification, transformation, and delivery, supporting use cases from securing package delivery with AI to powering global tech operations and improving patient outcomes. Striim aims to reduce total cost of ownership and accelerate time to market for data-driven initiatives. Striim is ideal for data engineers, architects, and IT managers in organizations that require immediate access to fresh data for analytics, operational intelligence, and AI/ML applications. Its key benefits include simplified data pipelines, minimized latency, enhanced customer experiences through real-time updates, and a single source of truth across diverse data domains.

Privacy-first analytics. Actionable insights without invasive tracking

GhostlyX is a modern, privacy-first web analytics platform designed to give website owners clear, actionable insights without relying on invasive tracking methods. At its core, it challenges the traditional analytics model by removing cookies, trackers, and personal data collection entirely, replacing them with a system built around anonymous, aggregate data. Unlike conventional tools that prioritise user-level tracking, GhostlyX focuses on what actually matters for decision-making. It provides real-time visibility into how a website is performing, including live visitors, pageviews, traffic sources, and top-performing pages, all presented through a clean, minimal dashboard that avoids the complexity and clutter often associated with analytics platforms. The platform is built with performance and simplicity in mind. Its lightweight script is designed to have minimal impact on page speed while still capturing meaningful insights such as entry and exit pages, device and browser breakdowns, and geographic trends. Installation takes seconds, making it accessible for developers, founders, and marketing teams who want fast answers without a heavy setup process. Beyond standard analytics, GhostlyX expands into behaviour and operational insights. It supports custom events, funnels, and conversion tracking, allowing users to measure key actions like signups or purchases. Additional features such as uptime monitoring and annotations provide a broader view of website performance, connecting traffic data with real-world events and system reliability. A key differentiator is its integration with AI. Through its built-in analytics assistant, users can query their data in plain English instead of navigating dashboards and reports. This conversational approach allows for faster insights, enabling users to ask questions like which pages are performing best or whether any monitored services are down, and receive direct, data-backed answers instantly. Despite these capabilities, GhostlyX maintains a strict privacy model. It does not collect IP addresses, personal identifiers, or any data that could be used to track individuals. Even its AI features operate solely on aggregated statistics, and conversations are not stored, ensuring that privacy is preserved across the entire platform. In essence, GhostlyX positions itself as a complete analytics solution for the modern web: fast, developer-friendly, and privacy-respecting. It combines real-time analytics, behavioural insights, monitoring tools, and AI-driven querying into a single platform, allowing teams to understand and improve their websites without compromising user trust.

Enterprise-grade event streaming platform for real-time agents, apps, and analytics.

RisingWave is a cloud-native, enterprise-grade event streaming platform built in Rust, designed for real-time data processing with sub-100ms latency. It unifies streaming and lakehouse worlds by continuously ingesting data from various sources like databases, message queues, and IoT devices, transforming it in motion, and materializing results for instant serving. It also integrates with Apache Iceberg for managing data in managed tables, simplifying ELT/ETL processes without the need for orchestrators or compactors. The platform is ideal for organizations needing continuous insights from live and historical data, supporting use cases such as monitoring and alerting, real-time data enrichment, IoT/telemetry pipelines, and streaming lakehouses. RisingWave is trusted by over 1,000 data-driven organizations across various industries including financial services, energy, manufacturing, sports betting, logistics, ad/marketing tech, e-commerce, and healthcare, enabling them to build proactive agents, AI automation, and customer engagement solutions.

The fastest open-source OLAP DBMS for real-time analytics and data warehousing.

ClickHouse is a fast, open-source, column-oriented online analytical processing (OLAP) database management system (DBMS) designed for real-time analytics on large datasets. It excels at processing billions of rows with millisecond results, making it ideal for use cases like observability, ML & GenAI, business intelligence, financial services, fraud detection, and gaming. Its architecture leverages column-oriented storage and vectorized query execution for superior performance and resource efficiency. This database is built for developers and organizations that require ultimate query performance and cost-effective data storage. It allows users to analyze and explore data instantly, offload heavy workloads, and build scalable real-time data products. ClickHouse offers flexible deployment options, including a managed cloud service (ClickHouse Cloud), a self-hosted open-source version, and a local version for querying files without a server. ClickHouse integrates seamlessly with a wide range of tools for data ingestion, visualization, and language clients, providing a comprehensive ecosystem for modern data challenges. Its developer-friendly nature ensures that complex data analysis can be performed intuitively using standard SQL.