List of the Top 21 Event Stream Processing Software for Apache Kafka in 2025

Ably stands out as the leading platform for realtime experiences. With more WebSocket connections than any competing pub/sub service, we facilitate connections for over a billion devices each month. Companies rely on us for their essential applications, including chat, notifications, and broadcasts, ensuring that these services run reliably, securely, and at an impressive scale. Our commitment to excellence makes us the preferred choice for businesses seeking to enhance their realtime capabilities.

Aiven takes charge of your open-source data infrastructure in the cloud, enabling you to devote your attention to what you do best: building applications. While you invest your efforts in innovation, we proficiently manage the intricacies of cloud data infrastructure for you. Our offerings are fully open source, granting you the ability to move data seamlessly between different clouds or set up multi-cloud environments. You will have complete transparency regarding your expenses, with a comprehensive breakdown of costs as we merge networking, storage, and essential support fees. Our commitment to keeping your Aiven software running smoothly is steadfast; if any issues arise, you can rely on our swift resolution. You can initiate a service on the Aiven platform in a mere 10 minutes, and the sign-up process doesn't require a credit card. Just choose your preferred open-source service along with the cloud and region for deployment, select a plan that includes $300 in free credits, and press "Create service" to start configuring your data sources. This approach allows you to maintain control over your data while utilizing powerful open-source services customized to fit your requirements. With Aiven, you can enhance your cloud operations and concentrate on propelling your projects ahead, ensuring that your team can innovate without the burden of managing infrastructure.

RudderStack serves as an intelligent solution for managing customer information flows. With it, you can effortlessly construct pipelines that integrate your complete customer data ecosystem. Furthermore, you can enhance these pipelines by sourcing data from your data warehouse, facilitating enriched interactions within customer tools for identity stitching and various other sophisticated applications. Begin developing more intelligent customer data pipelines now to maximize your insights.

Apache Kafka® can be incredibly straightforward when equipped with the appropriate tools, and that's precisely why kPow was developed—to enhance the Kafka development process while helping organizations save both time and resources. With kPow, pinpointing the source of production issues becomes a task of mere clicks rather than lengthy hours of investigation. Leveraging features like Data Inspect and kREPL, users can efficiently sift through tens of thousands of messages every second. For those new to Kafka, kPow's distinctive UI facilitates a quick grasp of fundamental Kafka principles, enabling effective upskilling of team members and broadening their understanding of Kafka as a whole. Additionally, kPow is packed with numerous Kafka management functions and monitoring capabilities all bundled into a single Docker Container, providing the flexibility to oversee multiple clusters and schema registries seamlessly, all while allowing for easy installation with just one instance. This comprehensive approach not only streamlines operations but also empowers teams to harness the full potential of Kafka technology.

Instaclustr, a company focused on Open Source-as-a-Service, ensures dependable performance at scale. Our services encompass database management, search functionalities, messaging solutions, and analytics, all within a reliable, automated managed environment that has been tested and proven. By partnering with us, organizations can direct their internal development and operational efforts towards building innovative applications that enhance customer experiences. As a versatile cloud provider, Instaclustr collaborates with major platforms including AWS, Heroku, Azure, IBM Cloud, and Google Cloud Platform. In addition to our SOC 2 certification, we pride ourselves on offering round-the-clock customer support to assist our clients whenever needed. This comprehensive approach to service guarantees that our clients can operate efficiently and effectively in their respective markets.

Solace specializes in Event-Driven Architecture (EDA) and boasts two decades of expertise in delivering highly dependable, robust, and scalable data transfer solutions that utilize the publish & subscribe (pub/sub) model. Their technology facilitates the instantaneous data exchange that underpins many daily conveniences, such as prompt loyalty rewards from credit cards, weather updates on mobile devices, real-time tracking of aircraft on the ground and in flight, as well as timely inventory notifications for popular retail stores and grocery chains. Additionally, the technology developed by Solace is instrumental for numerous leading stock exchanges and betting platforms worldwide. Beyond their reliable technology, exceptional customer service is a significant factor that attracts clients to Solace and fosters long-lasting relationships. The combination of innovative solutions and dedicated support ensures that customers not only choose Solace but also continue to rely on their services over time.

Apache Kafka serves as a fully managed service that eliminates concerns about vendor lock-in while providing essential features for effectively building your streaming pipeline. You can set up a fully managed Kafka instance in less than ten minutes through our user-friendly web interface or utilize various programmatic options, including our API, CLI, Terraform provider, or Kubernetes operator. Effortlessly integrate it with your existing technology stack by using over 30 connectors, ensuring that logs and metrics are easily accessible through integrated services. This distributed data streaming platform can be deployed in any cloud environment of your choosing. It is particularly well-suited for applications driven by events, nearly instantaneous data transfers, and data pipelines, in addition to stream analytics and scenarios where swift data movement between applications is essential. With Aiven's hosted and completely managed Apache Kafka, you can efficiently create clusters, deploy new nodes, transition between clouds, and upgrade versions with a simple click, all while monitoring everything through a user-friendly dashboard. This level of convenience and efficiency makes it an outstanding option for developers and organizations aiming to enhance their data streaming capabilities. Furthermore, its scalability and reliability make it an ideal choice for both small projects and large-scale enterprise applications.

WarpStream is a cutting-edge data streaming service that seamlessly integrates with Apache Kafka, utilizing object storage to remove the costs associated with inter-AZ networking and disk management, while also providing limitless scalability within your VPC. The installation of WarpStream relies on a stateless, auto-scaling agent binary that functions independently of local disk management requirements. This novel method enables agents to transmit data directly to and from object storage, effectively sidestepping local disk buffering and mitigating any issues related to data tiering. Users have the option to effortlessly establish new "virtual clusters" via our control plane, which can cater to different environments, teams, or projects without the complexities tied to dedicated infrastructure. With its flawless protocol compatibility with Apache Kafka, WarpStream enables you to maintain the use of your favorite tools and software without necessitating application rewrites or proprietary SDKs. By simply modifying the URL in your Kafka client library, you can start streaming right away, ensuring that you no longer need to choose between reliability and cost-effectiveness. This adaptability not only enhances operational efficiency but also cultivates a space where creativity and innovation can flourish without the limitations imposed by conventional infrastructure. Ultimately, WarpStream empowers businesses to fully leverage their data while maintaining optimal performance and flexibility.

Enable individuals to effectively delve into and assess streaming data. By organizing, documenting, and sharing your data, you could increase productivity by as much as 95%. Once your data is in hand, you can develop applications designed for practical, real-world scenarios. Establish a data-centric security model to tackle the risks linked to open-source technologies, ensuring that data privacy remains a top priority. In addition, provide secure and user-friendly low-code data pipeline options that improve overall usability. Illuminate all hidden facets and deliver unparalleled transparency into your data and applications. Seamlessly integrate your data mesh and technology stack, which empowers you to confidently leverage open-source solutions in live production environments. Lenses has gained recognition as the leading product for real-time stream analytics, as confirmed by independent third-party assessments. With insights collected from our community and extensive engineering efforts, we have crafted features that enable you to focus on what truly adds value from your real-time data. Furthermore, you can deploy and manage SQL-based real-time applications effortlessly across any Kafka Connect or Kubernetes environment, including AWS EKS, simplifying the process of tapping into your data's potential. This approach not only streamlines operations but also opens the door to new avenues for innovation and growth in your organization. By embracing these strategies, you position yourself to thrive in an increasingly data-driven landscape.

Amazon Managed Streaming for Apache Kafka (Amazon MSK) streamlines the creation and management of applications that utilize Apache Kafka for processing streaming data. As an open-source solution, Apache Kafka supports the development of real-time data pipelines and applications. By employing Amazon MSK, you can take advantage of Apache Kafka’s native APIs for a range of functions, including filling data lakes, enabling data interchange between databases, and supporting machine learning and analytical initiatives. Nevertheless, independently managing Apache Kafka clusters can be quite challenging, as it involves tasks such as server provisioning, manual setup, and addressing server outages. Furthermore, it requires you to manage updates and patches, design clusters for high availability, securely and durably store data, set up monitoring systems, and strategically plan for scaling to handle varying workloads. With Amazon MSK, many of these complexities are mitigated, allowing you to concentrate more on application development rather than the intricacies of infrastructure management. This results in enhanced productivity and more efficient use of resources in your projects.

The Streaming service is a cutting-edge, serverless event streaming platform that operates in real-time and is fully compatible with Apache Kafka, catering specifically to the needs of developers and data scientists. This platform is seamlessly connected with Oracle Cloud Infrastructure (OCI), Database, GoldenGate, and Integration Cloud, ensuring a smooth user experience. Moreover, it comes with pre-built integrations for numerous third-party applications across a variety of sectors, including DevOps, databases, big data, and software as a service (SaaS). Data engineers can easily create and oversee large-scale big data pipelines without hassle. Oracle manages all facets of infrastructure and platform maintenance for event streaming, which includes provisioning resources, scaling operations, and implementing security updates. Additionally, the service supports consumer groups that efficiently handle state for thousands of consumers, simplifying the process for developers to build scalable applications. This holistic approach not only accelerates the development workflow but also significantly boosts operational efficiency, providing a robust solution for modern data challenges. With its user-friendly features and comprehensive management, the Streaming service empowers teams to innovate without the burden of infrastructure concerns.

DeltaStream serves as a comprehensive serverless streaming processing platform that works effortlessly with various streaming storage solutions. Envision it as a computational layer that enhances your streaming storage capabilities. The platform delivers both streaming databases and analytics, along with a suite of tools that facilitate the management, processing, safeguarding, and sharing of streaming data in a cohesive manner. Equipped with a SQL-based interface, DeltaStream simplifies the creation of stream processing applications, such as streaming pipelines, and harnesses the power of Apache Flink, a versatile stream processing engine. However, DeltaStream transcends being merely a query-processing layer above systems like Kafka or Kinesis; it introduces relational database principles into the realm of data streaming, incorporating features like namespacing and role-based access control. This enables users to securely access and manipulate their streaming data, irrespective of its storage location, thereby enhancing the overall data management experience. With its robust architecture, DeltaStream not only streamlines data workflows but also fosters a more secure and efficient environment for handling real-time data streams.

A versatile Python framework crafted for the development of real-time intelligent applications, the construction of data pipelines, and the seamless integration of AI and machine learning models. This framework enhances scalability, enabling developers to efficiently manage increasing workloads and complex processes.

Data integration for hybrid cloud environments ensures efficient and dependable synchronization between your private and public cloud infrastructures. This process occurs in real-time and employs change data capture along with streaming capabilities. Striim, created by a seasoned team from GoldenGate Software, boasts extensive expertise in managing essential enterprise tasks. It can be deployed as a distributed platform within your infrastructure or hosted entirely in the cloud. The scalability of Striim can be easily modified to meet your team's requirements. It adheres to stringent security standards, including HIPAA and GDPR compliance, ensuring data protection. Designed from its inception to cater to contemporary enterprise demands, Striim effectively handles workloads whether they reside on-premise or in the cloud. Users can effortlessly create data flows between various sources and targets using a simple drag-and-drop interface. Additionally, real-time SQL queries empower you to process, enrich, and analyze streaming data seamlessly, enhancing your operational efficiency. This flexibility fosters a more responsive approach to data management across diverse platforms.

Develop sophisticated applications that enhance workflow efficiency, facilitate continuous operational oversight, and enable real-time process management. These innovative solutions are built to function around the clock on cloud infrastructure as well as edge devices. With an intuitive spreadsheet-like interface, you don't need programming skills; you can easily drag and drop data, input formulas, and generate charts effortlessly. All the necessary protocols for linking to sensors and machinery, such as MQTT, REST, and OPC UA, are conveniently provided. Streamsheets excels in handling streaming data, accommodating formats including MQTT and Kafka. You can choose a topic stream, make adjustments as necessary, and reintegrate it into the expansive realm of streaming data. Through REST, you unlock access to a wide range of web services, and Streamsheets ensures smooth bidirectional connections. Furthermore, Streamsheets can be utilized not only in cloud environments and on private servers but also on edge devices like Raspberry Pi, significantly enhancing their adaptability to diverse operational contexts. This inherent flexibility empowers companies to tailor their systems to meet specific operational demands, thereby optimizing overall performance.

IBM Event Streams is a robust event streaming solution based on Apache Kafka that helps organizations manage and respond to data in real time. It includes features like machine learning integration, high availability, and secure cloud deployment, allowing businesses to create intelligent applications that react promptly to events. The service is tailored to support multi-cloud environments, offers disaster recovery capabilities, and enables geo-replication, making it an ideal choice for mission-critical operations. By enabling the development and scaling of real-time, event-driven applications, IBM Event Streams ensures efficient and fast data processing, which significantly boosts organizational agility and responsiveness. Consequently, companies can leverage real-time data to foster innovation and enhance their decision-making strategies while navigating complex market dynamics. This adaptability positions them favorably in an increasingly competitive landscape.

Red Hat® OpenShift® Streams for Apache Kafka is a managed cloud service aimed at improving the developer experience when it comes to building, deploying, and scaling cloud-native applications, while also facilitating the modernization of older systems. This solution streamlines the tasks of creating, discovering, and connecting to real-time data streams, no matter where they are hosted. Streams are essential for the creation of event-driven applications and data analytics projects. By providing fluid operations across distributed microservices and efficiently managing substantial data transfers, it empowers teams to capitalize on their strengths, quicken their time to market, and minimize operational costs. Furthermore, OpenShift Streams for Apache Kafka boasts a strong Kafka ecosystem and integrates into a wider range of cloud services within the Red Hat OpenShift portfolio, enabling users to craft a wide variety of data-centric applications. Ultimately, the comprehensive capabilities of this service help organizations effectively address the challenges posed by modern software development, supporting innovation and growth in an ever-evolving technological landscape.

Scale from zero to millions of events each second with Arroyo, which is provided as a single, efficient binary. It can be executed locally on MacOS or Linux for development needs and can be seamlessly deployed into production via Docker or Kubernetes. Arroyo offers a groundbreaking approach to stream processing that prioritizes the ease of real-time operations over conventional batch processing methods. Designed from the ground up, Arroyo enables anyone with a basic knowledge of SQL to construct reliable, efficient, and precise streaming pipelines. This capability allows data scientists and engineers to build robust real-time applications, models, and dashboards without requiring a specialized team focused on streaming. Users can easily perform operations such as transformations, filtering, aggregation, and data stream joining merely by writing SQL, achieving results in less than a second. Additionally, your streaming pipelines are insulated from triggering alerts simply due to Kubernetes deciding to reschedule your pods. With its ability to function in modern, elastic cloud environments, Arroyo caters to a range of setups from simple container runtimes like Fargate to large-scale distributed systems managed with Kubernetes. This adaptability makes Arroyo the perfect option for organizations aiming to refine their streaming data workflows, ensuring that they can efficiently handle the complexities of real-time data processing. Moreover, Arroyo’s user-friendly design helps organizations streamline their operations significantly, leading to an overall increase in productivity and innovation.

Axual functions as a specialized Kafka-as-a-Service, specifically designed for DevOps teams, allowing them to derive insights and make well-informed choices via our intuitive Kafka platform. For businesses seeking to seamlessly integrate data streaming into their essential IT infrastructure, Axual offers the perfect answer. Our all-encompassing Kafka platform is engineered to eliminate the need for extensive technical knowledge, providing a ready-to-use solution that delivers the benefits of event streaming without the typical challenges it presents. The Axual Platform is a holistic answer tailored to enhance the deployment, management, and utilization of real-time data streaming with Apache Kafka. By providing a wide array of features that cater to the diverse needs of modern enterprises, the Axual Platform enables organizations to maximize the potential of data streaming while greatly minimizing complexity and operational demands. This forward-thinking approach not only streamlines workflows but also allows teams to concentrate on higher-level strategic goals, fostering innovation and growth in the organization.

We created Conduktor, an intuitive and comprehensive interface that enables users to effortlessly interact with the Apache Kafka ecosystem. With Conduktor DevTools, your all-in-one desktop client specifically designed for Apache Kafka, you can manage and develop with confidence, ensuring a smoother workflow for your entire team. While learning and mastering Apache Kafka can often be daunting, our passion for Kafka has driven us to design Conduktor to provide an outstanding user experience that appeals to developers. Instead of just serving as an interface, Conduktor equips you and your teams to take full control of your entire data pipeline, thanks to our integrations with a variety of technologies connected to Apache Kafka. By utilizing Conduktor, you unlock the most comprehensive toolkit for working with Apache Kafka, making your data management processes not only effective but also streamlined. This allows you to concentrate more on innovation and creativity while we take care of the complexities involved in your data workflows. Ultimately, Conduktor is not just a tool but a partner in enhancing your team's productivity and efficiency.

Seamlessly combine data from legacy systems into contemporary cloud and data platforms with a unified solution. Connect allows you to oversee the transition of your data from mainframes to cloud infrastructures. It supports data integration through both batch processing and real-time ingestion, which enhances advanced analytics, broad machine learning applications, and smooth data migration efforts. With a wealth of experience, Connect capitalizes on Precisely's expertise in mainframe sorting and IBM i data security to thrive in the intricate world of data access and integration. The platform ensures that all vital enterprise information is accessible for important business objectives by offering extensive support for diverse data sources and targets, tailored to fulfill all your ELT and CDC needs. This capability empowers organizations to adapt and refine their data strategies in an ever-evolving digital environment. Furthermore, Connect not only simplifies data management but also enhances operational efficiency, making it an indispensable asset for any organization striving for digital transformation.