Xceptance

Clients and industries

Xceptance serves international customers across multiple sectors, including:

• E-commerce and online retail.
• Telecommunications.
• Optical industries.
• Finance and other online service providers.
• Organizations in North and South America, the EU, and the APAC region.

Team and expertise

• The team consists mainly of test engineers with degrees in Computer Science, Business Informatics, or equivalent qualifications.
• The company emphasizes continuous improvement of its QA methods and internal practices.
• Open source plays a central role: Xceptance maintains Xceptance LoadTest (XLT) under the Apache License 2.0 and the Neodymium framework under the MIT license.

Languages and regions served

• Day-to-day working languages include English and German, with additional capabilities in French, Italian, Romanian, and Ukrainian.
• Teams are based exclusively in Germany and the USA while supporting clients worldwide.

Contact overview

• The website lists dedicated phone contacts for the European headquarters (Germany) and the North American subsidiary (USA).
• Detailed, up-to-date contact information (phone numbers, contact forms, and postal addresses) is available on the main website.

Approach to quality and collaboration

• Focuses on efficient, high-quality testing delivered by experienced engineers.
• Supports both agile teams and traditional enterprise projects, and can engage in short assignments or long-term engagements.
• Works either with a client's existing tools and processes or with Xceptance's own toolchain.
• Aims to be a collaborative, respectful partner rather than just a fault-finding test team, keeping client needs at the center of each engagement.

AI innovation and open source

• Invests in in-house R&D to create and evolve open-source testing tools such as XLT and Neodymium.
• Pioneers AI-assisted test automation, particularly around natural language test playbooks, self-healing tests, and AI-supported diagnostics.
• Combines AI with human judgment: AI is used as a companion and assistant, while human experts remain responsible for strategy and decisions.

Team culture

• Emphasizes a positive, supportive working environment with flat hierarchies.
• Values long-term relationships with clients, partners, and team members.
• Encourages knowledge sharing within the wider testing community through open-source projects and contributions.

Xceptance focuses on software quality assurance for web and digital applications, combining human expertise with AI-assisted tooling.

Core service areas

• Human and AI-powered testing

Blends expert manual testing with AI assistance for note-taking, analysis support, and faster test execution, while humans always define strategy, scope, and acceptance criteria. Testing can also be performed fully manually (without AI) when required by compliance or privacy.

• Load and performance testing

Plans and runs realistic server-side and client-side performance tests to assess stability, responsiveness, and scalability of web applications and APIs under high traffic. Uses Xceptance LoadTest (XLT) and related tooling to generate traffic, capture metrics, and provide actionable performance reports.

• Test automation

Designs and implements automated regression and data-driven tests across different platforms and configurations. Uses the open-source Neodymium framework and other tools to make tests maintainable, repeatable, and efficient, with ongoing work on AI-assisted test generation from natural language.

• Test management

Plans, monitors, and controls the testing lifecycle so software meets quality goals, deadlines, and budget constraints. Human test managers define strategies and milestones, while AI is used as an assistant for documentation and analysis.

• Device testing

Tests complex software-driven devices (for example IoT or medical-related equipment) for reliability, performance, and correct behavior under different operating conditions.

• Application-level security testing

Evaluates application authentication, data handling, and access controls to identify security weaknesses and support compliance and risk reduction.

• Accessibility and usability testing

Reviews web applications for accessibility and usability, helping ensure inclusive, user-friendly experiences that support legal and standards compliance.

• Test guidance, coaching and support

Provides consulting, workshops, and hands-on support to help teams design test strategies, set up QA processes, or build an internal quality assurance function.

Typical customers and use cases

• High-traffic web and e-commerce platforms that must handle peak loads reliably.
• Companies that need independent QA expertise for new projects, migrations, or major releases.
• Teams looking to professionalize their testing, introduce automation, or modernize QA processes.
• Organizations that want to combine human testing with AI-assisted approaches while staying in control of quality and compliance.

• Type: Commercial software-as-a-service (SaaS) platform.
• Purpose: Central place to manage, configure, run, and evaluate load and performance tests, monitoring, and (in future) test automation in the cloud.
• Key capabilities:
• Web-based management for load test projects.
• Configuration, scheduling, and execution of load tests.
• Evaluation and sharing of test results.
• Monitoring-as-code: continuous browser-based checks of response times and functionality with threshold-based alerts and historical performance views.
• Integration with Xceptance LoadTest (XLT) and related tooling.

Note: Some advanced automation reporting features are described as upcoming and may still be in development.

Xceptance LoadTest (XLT)

• Type: Open-source load and performance testing tool running on the JVM.
• Purpose: Execute realistic, flexible load tests for web applications and other systems.
• Key characteristics:
• Supports load testing "as code" using Java for flexible, realistic test scenarios.
• Offers record-and-replay options for simpler scenarios.
• Collects data in open formats and provides detailed reporting by transaction, user action, and HTTP request.
• Scales across multiple machines, scenarios, and load profiles for high-volume tests.
• Includes a Result Browser and rich reports to help diagnose performance issues quickly.

Neodymium test automation framework

• Type: Open-source test automation framework built on established libraries such as JUnit, Selenide, and Allure.
• Purpose: Provide a project-ready automation stack for browser-based tests with minimal setup effort.
• Key capabilities:
• Integrated reporting with Allure.
• Built-in support for multi-browser, parallel execution.
• Data-driven test support and test data management utilities.
• Video recording, secret masking, and automated Lighthouse performance audits.
• Pre-configured starter templates and showcase repositories for fast onboarding.
• AI-driven enhancements (in progress):
• Natural language playbooks: tests expressed in plain language and translated into browser actions.
• Fast offline replay of recorded playbooks without recurring LLM costs.
• AI-powered root cause analysis for failed tests.
• Self-healing locators to keep automated tests stable when UI elements change.

Ask anyway — the agent will say plainly that it is not published rather than guess.