List of the Top 14 Free Microservices Tools in 2025

Postman is a collaborative platform tailored for API development, aimed at streamlining the process of creating APIs while promoting teamwork, which leads to the quick production of high-quality APIs. Its various features support every stage of API development, thereby enhancing collaboration and expediting the process of building superior APIs. Users have the ability to rapidly and easily send requests for REST, SOAP, and GraphQL APIs right within Postman, which optimizes their workflow significantly. Moreover, it offers the capability to automate manual testing, integrating these tests into your CI/CD pipeline to prevent potential issues when new code is deployed. The platform also enables effective communication regarding API behavior by allowing users to simulate endpoints and their responses without needing a backend server. Additionally, you can create and publish visually appealing, machine-readable documentation, making your API more user-friendly and accessible. Regular monitoring of performance and response times keeps you updated on the health of your API, allowing for proactive management. Furthermore, Postman encourages a shared environment for both the creation and consumption of APIs, fostering real-time collaboration among team members, which can lead to more innovative solutions. This combination of features not only enhances productivity but also helps teams work more cohesively towards developing robust APIs. Postman’s AI Agent Builder is a comprehensive tool that accelerates the creation, testing, and deployment of AI agents by providing easy integration with APIs and LLMs. It allows users to quickly turn APIs into agent-ready tools, test LLMs’ performance and costs, and compare responses to choose the best model. The no-code platform features a visual canvas that lets developers design and configure agent workflows with ease.

Crashtest Security is a SaaS security vulnerability scanner designed to help agile development teams maintain ongoing security throughout the development process, even prior to production deployment. Featuring a cutting-edge dynamic application security testing (DAST) solution, it integrates effortlessly into your development ecosystem while safeguarding multi-page and JavaScript applications, as well as microservices and APIs. Setting up the Crashtest Security Suite takes only a few minutes, and it offers advanced crawling capabilities along with the option to automate your security measures. By providing insights into vulnerabilities listed in the OWASP Top 10, Crashtest Security empowers you to protect both your code and your customers effectively. This proactive approach to security helps teams to identify and mitigate risks early in the software development lifecycle.

Portainer Business simplifies the management of containers across various environments, from data centers to edge locations, and is compatible with Docker, Swarm, and Kubernetes, earning the trust of over 500,000 users. Its user-friendly graphical interface and robust Kube-compatible API empower anyone to easily deploy and manage containerized applications, troubleshoot container issues, establish automated Git workflows, and create user-friendly CaaS environments. The platform is compatible with all Kubernetes distributions and can be deployed either on-premises or in the cloud, making it ideal for collaborative settings with multiple users and clusters. Designed with a suite of security features, including RBAC, OAuth integration, and comprehensive logging, it is well-suited for large-scale, complex production environments. For platform managers aiming to provide a self-service CaaS environment, Portainer offers a range of tools to regulate user permissions effectively and mitigate risks associated with container deployment in production. Additionally, Portainer Business comes with full support and a detailed onboarding process that ensures seamless implementation and fast-tracks your operational readiness. This commitment to user experience and security makes it a preferred choice for organizations looking to streamline their container management.

Tyk is a prominent Open Source API Gateway and Management Platform, recognized for its leadership in the realm of Open Source solutions. It encompasses a range of components, including an API gateway, an analytics portal, a dashboard, and a dedicated developer portal. With support for protocols such as REST, GraphQL, TCP, and gRPC, Tyk empowers numerous forward-thinking organizations, processing billions of transactions seamlessly. Additionally, Tyk offers flexible deployment options, allowing users to choose between self-managed on-premises installations, hybrid setups, or a fully SaaS solution to best meet their needs. This versatility makes Tyk an appealing choice for diverse operational environments.

DeployHub serves as a comprehensive catalog for microservices, allowing users to manage their microservice implementations in a centralized manner. It enables tracking of deployment specifics, SBOMs, inventories, consumers, version histories, and the teams behind each service. By adopting a structured approach to microservice architecture, we help cloud-native teams enhance their business agility. The tracking and versioning capabilities offered by DeployHub represent a significant advancement in DevOps, providing teams an efficient method to utilize cloud-native application-level frameworks. Furthermore, DeployHub seamlessly integrates with your CI/CD pipeline, making it easier to streamline development processes. You can explore our free version by visiting deployhub.com. Built on the foundation of the Ortelius.io open-source project, DeployHub supports collaboration and innovation in microservice management. In addition, our platform continually evolves to meet the dynamic needs of modern software development.

RabbitMQ serves as a nimble messaging solution that can be easily implemented in both on-premises setups and cloud-based environments. Its support for multiple messaging protocols renders it a flexible choice for a variety of applications. Additionally, RabbitMQ can be set up in distributed and federated configurations to meet the needs for high scalability and robust availability. With a large community of users, it is recognized as one of the top open-source message brokers currently available. Companies ranging from T-Mobile to Runtastic utilize RabbitMQ, demonstrating its suitability for both burgeoning startups and established enterprises alike. Moreover, it is designed to work seamlessly across a multitude of operating systems and cloud platforms, providing a rich array of development tools tailored for popular programming languages. Users can take advantage of deployment options including Kubernetes, BOSH, Chef, Docker, and Puppet, which enables smooth integration into their current environments. Developers also have the ability to craft cross-language messaging solutions using a selection of programming languages such as Java, .NET, PHP, Python, JavaScript, Ruby, and Go, thereby broadening its applicability across diverse projects. Ultimately, RabbitMQ’s versatility and compatibility make it an essential tool for modern software development.

Implement, protect, oversee, and track your services with ease. Istio's advanced traffic management features allow you to control the flow of traffic and API exchanges between various services effortlessly. In addition, Istio makes it easier to configure service-level parameters like circuit breakers, timeouts, and retries, which are vital for executing processes such as A/B testing, canary releases, and staged rollouts by distributing traffic according to specified percentages. The platform is equipped with built-in recovery features that boost your application's resilience against failures from dependent services or network challenges. To tackle security concerns, Istio provides a comprehensive solution that safeguards your services in diverse environments, as detailed in this guide, which shows how to utilize Istio's security measures effectively. Specifically, Istio's security framework addresses both internal and external threats to your data, endpoints, communication channels, and overall platform integrity. Moreover, Istio consistently generates detailed telemetry data for all service interactions within a mesh, which enhances monitoring and offers valuable insights. This extensive telemetry is essential for ensuring high service performance and robust security, making Istio an indispensable tool for modern service management. By implementing Istio, you are not only reinforcing the security of your services but also improving their overall operational efficiency.

Founded in 2014, Codefresh offers a comprehensive container delivery platform that integrates CI/CD with Image Management, fostering collaboration between developers and operations teams. This innovative platform enables both startups and large enterprises to swiftly leverage microservices and container-based technologies. Headquartered in Silicon Valley, Israel, Codefresh is at the forefront of advancing containerization in the software industry. Its solutions are designed to enhance efficiency and streamline processes for development teams across various sectors.

You have the option to utilize your preferred debugging software to address issues with your Kubernetes services on a local level. Telepresence, an open-source solution, facilitates the execution of a single service locally while maintaining a connection to a remote Kubernetes cluster. Originally created by Ambassador Labs, known for their open-source development tools like Ambassador and Forge, Telepresence encourages community participation through issue submissions, pull requests, and bug reporting. Engaging in our vibrant Slack community is a great way to ask questions or explore available paid support options. The development of Telepresence is ongoing, and by registering, you can stay informed about updates and announcements. This tool enables you to debug locally without the delays associated with building, pushing, or deploying containers. Additionally, it allows users to leverage their preferred local tools such as debuggers and integrated development environments (IDEs), while also supporting the execution of large-scale applications that may not be feasible to run locally. Furthermore, the ability to connect a local environment to a remote cluster significantly enhances the debugging process and overall development workflow.

Aerobase serves as an open-source solution tailored for Identity and Access Management (IAM), emphasizing critical elements like identity federation, single sign-on (SSO), adaptive authentication, access control, account management, identity provisioning, and the protection of APIs and microservices while adhering to privacy regulations. This guide aims to help you kick off your experience with Aerobase by outlining the necessary steps for server installation and the use of the default database, but it does not delve into advanced deployment options. To gain a deeper understanding of the full range of features and configuration options available, it is advisable to consult the supplementary reference materials provided. By exploring these additional resources, you will significantly broaden your grasp of Aerobase's functionalities and potential applications. Engaging with these materials will equip you with the knowledge necessary for maximizing your use of the platform.

Thundra empowers application teams to build, troubleshoot, test, and oversee contemporary microservices in cloud environments. By providing a comprehensive platform that integrates automated instrumentation, cloud application debugging, and test optimization, Thundra removes the necessity for various tools across both pre-production and production stages. The company features two key products: Thundra Foresight, designed to assist in monitoring and resolving issues within your CI workflows and tests, and Thundra APM, which specializes in application performance monitoring for serverless architectures and containerized applications. Additionally, this unified approach streamlines the development process, enhancing team productivity and efficiency.

Enhancing your workflow efficiency can be achieved through the use of pipelines, which are fundamental to the CI process within Microtica. Each microservice and component follows a distinct build process via a pipeline, initiated through either manual or automatic triggers. This build sequence is regulated by a central document known as the microtica.yaml file, which resides in the root directory of the repository. A notable aspect of this system is its user customizability, enabling individuals to define their unique build processes and the commands that are executed simply by adjusting the microtica.yaml file. Furthermore, this adaptability allows users to modify their workflows, ensuring they align with the specific requirements of their projects. This level of customization not only enhances productivity but also fosters a more tailored development environment.

Epsagon empowers teams to rapidly visualize, comprehend, and enhance their microservice architectures. By utilizing our innovative lightweight auto-instrumentation, we effectively remove data gaps and the manual effort tied to traditional APM solutions, which leads to notable decreases in the time required for issue detection, root cause analysis, and resolution. Additionally, Epsagon boosts development efficiency and minimizes application downtime, ultimately fostering a more agile development environment. This combined approach not only streamlines processes but also enhances overall team productivity.

Creating a unified logging framework is crucial for making log data both easily accessible and operationally effective. Many existing solutions fall short in this regard; conventional tools often fail to meet the requirements set by contemporary cloud APIs and microservices, and they lag in their evolution. Fluentd, which is developed by Treasure Data, addresses the challenges inherent in establishing a cohesive logging framework with its modular architecture, flexible plugin system, and optimized performance engine. In addition to these advantages, Fluentd Enterprise caters to the specific needs of larger organizations by offering features like Trusted Packaging, advanced security protocols, Certified Enterprise Connectors, extensive management and monitoring capabilities, and SLA-based support and consulting services designed for enterprise clients. This wide array of features not only sets Fluentd apart but also positions it as an attractive option for companies seeking to improve their logging systems. Ultimately, the integration of such robust functionalities makes Fluentd an indispensable tool for enhancing operational efficiency in today's complex digital environments.