Top 43 Application Performance Monitoring (APM) Tools SaaS Companies in May 2026

Paris, Île-de-France, France

Performance issues are the worst enemies of your website. 53% of users say they will leave a website that takes more than 3 seconds to load and it could impact your revenues quite badly. Your web app might be fine right now, but are you sure it can handle traffic spikes or extended high use without affecting the user experience? Do you know your max capacity? That’s where we come in. With more than 20 million downloads, Gatling has helped +200,000 companies all over the world prepare for success. With scripting available in JavaScript, TypeScript, Java, Scala or Kotlin, our solutions designed for DevOps and CI/CD help you develop high-quality crash-proof applications through load testing. Our open-source solution will help you grasp the basics of load testing, while our Enterprise offers will give you access to distributed testing, live reporting, advanced metrics and public Gatling APIs/integrations. Gatling Enterprise is available in Cloud and Self-Hosted versions, or can be used through the AWS and Azure Marketplaces. Want to know how to get started? Schedule a demo directly with our experts! You can also jump start your load testing skills with the Gatling Academy, our learning platform, or check-out our wide range of blog posts, webinars and use-cases at www.gatling.io.

Grand Rapids, Michigan, United States

BindPlane builds cutting edge observability tools for businesses, private users, and open source projects. Our mission is to advance observability technology through promoting and contributing to open source communities. We are a proud partner of the OpenTelemetry project. Docs: https://docs.bindplane.observiq.com/docs/about

New York, New York, United States

Dash0 is modern OpenTelemetry Native Observability, built on CNCF Open Standards such as PromQL, Perses and OTLP with full cost control. It provides an observability platform that delivers applications and infrastructure resource-centric monitoring, custom service metrics, query building, and promQL support.

Dublin, Co. Dublin, Ireland

MMSOFT Design, Ltd. is the maker of Pulseway, a mobile-first RMM that helps managed service providers and IT administrators look after their IT infrastructure on the go and transform their IT operations and services. Pulseway is used by over 13,000 businesses worldwide including BestBuy, DELL, Louis Vuitton, Canon and Siemens. In May 2025, Kaseya and Pulseway announced they have united to drive innovation for IT professionals as part of a next step of a long-standing partnership that delivers integrated solutions and access to the Kaseya ecosystem.

San Jose, California, United States

Provider of a turn-key Kubernetes-based application management platform intended to accelerate the adoption of open-source and cloud-native technologies. The company's application platform is intuitive, flexible and efficient that can be widely used on any application, operating system and infrastructure, enabling businesses to deploy, operate and optimize the lifecycle of all containerized applications.

Arlington, Virginia, United States

Greymatter.io is your gateway to a smarter, more connected future with our Enterprise-Grade, All-in-One Zero Trust Networking Platform. We're rewriting the narrative of the connected world, addressing critical challenges in application networking. Our journey began in 2015, leveraging over 30 decades of expertise and gaining recognition in mission-critical defense and intelligence sectors. Committed to extending your business value, ensuring zero-trust security, and expanding revenue streams, we've emerged as leaders in cloud-native service networking. Greymatter prioritizes top-tier security, incorporating advanced measures trusted by US Government Organizations to safeguard your network and data. Moreover, it provides universal visibility, offering deep insights into network performance, enabling informed decision-making. Explore Greymatter today and experience the power of our Application Networking Platform: https://info.greymatter.io/greymatter-by-the-numbers

Palo Alto, California, United States

Uptime.com provides peace of mind to thousands of customers like Apple, Microsoft, IBM, Palo Alto Networks, Kraft, and BNP Paribas who trust us to monitor the performance, health, and downtime of their websites, applications, and infrastructure. We’ve been recognized as the world’s best website and service monitoring solutions by G2 and TechRadar Pro for several consecutive years. Our customers depend in our services for mission critical availability monitoring. Monitor in minutes with our 14-day free trial: www.uptime.com.

Burlingame, California, United States

Give every engineer reliability superpowers. Stanza is on a mission to make reliability not just a privilege of the world's largest and most successful technology companies, but a standard accessible to anyone building software. Stanza’s Infrastructure Responsive Design is an application-layer approach enabling systems to adapt to changing needs and conditions end to end, through efficient resource allocation at the client and edge as well as the server. Your most critical customer interactions and user journeys always take priority, keeping your key experiences running smoothly even during peak traffic periods or in the face of lost system capacity. Stanza provides an exceptional customer experience without costly infrastructure changes or extra team members.

, United States

Enterprise-Grade OpenTelemetry

Los Altos, California, United States

Developer of an Application Performance Acceleration technology designed to activate data set I/O. The company's software puts primary I/O on an SSD cache in the server to achieve performance acceleration equivalent to all flash arrays which works without replacing existing spindle based storage, enabling enterprises to move computer to the cloud, while keeping storage secure in their data center.