There are hundreds of software testing tools available, but finding the right ones can be difficult.
Search for software testing tools and you will often find short “best tools” lists covering the same familiar products. Those lists can be useful, but they only show a small part of what is available.
AT*SQA has built something much broader.
AT*Tools™: The Comprehensive List of Software Testing Tools currently includes 624 tools across 25 categories. It covers test automation, API testing, performance testing, security testing, accessibility, mobile testing, AI testing, test management, test data, service virtualization, observability, and many other areas of software quality.
For software testers, QA engineers, developers, and testing leaders, it is a resource worth knowing about.
Browse AT*Tools™: The Comprehensive List of Software Testing Tools
What Is AT*Tools™?
AT*Tools™ is a software testing tools directory maintained by AT*SQA.
Rather than publishing a short list of recommended products, AT*SQA organizes hundreds of tools by the type of testing work they support.
As of August 5, 2026, the directory includes:
- 624 software testing tools
- 25 testing tool categories
- Established commercial products
- Open-source projects
- Newer AI-assisted testing and AI evaluation tools
- A separate category for legacy, renamed, discontinued, or unclear tools that need current-status review
This makes AT*Tools™ useful when you want to see what options exist before deciding which products deserve a closer look.
25 Categories of Software Testing Tools
AT*Tools™ covers a much wider range of testing technology than most software testing tool lists.
The current categories are:
- Accessibility Testing Tools
- AI-Assisted & Autonomous Testing Tools
- AI/ML and LLM Evaluation Tools
- API Testing Tools
- Cross-Browser, Device & Cloud Testing Tools
- Defect Tracking & Collaboration Tools
- Desktop & GUI Automation Tools
- Email, Content & Web Validation Tools
- Exploratory Testing & Session Support Tools
- General Tester Productivity & Documentation Tools
- Legacy, Renamed, Discontinued or Unclear Tools
- Mobile App Testing Tools
- Model-Based, Combinatorial & Specialized Testing Tools
- Monitoring, Diagnostics & Network Tools
- Performance, Load & Reliability Tools
- Security Testing Tools
- Service Virtualization, Mocking & Contract Testing Tools
- Test Data & Data Quality Tools
- Test Environment, CI/CD & Infrastructure Tools
- Test Management & Planning Tools
- Test Reporting, Analytics & Observability Tools
- Unit, Component & BDD Frameworks Tools
- Usability, Crowdtesting & User Research Tools
- Visual Testing & UI Review Tools
- Web UI Automation Tools
Why AT*Tools™ Is Useful
It Covers More Than Test Automation
Software testing tools are often treated as if they are mainly browser automation tools.
AT*Tools™ takes a much wider view.
The directory includes tools for security, accessibility, APIs, performance, test data, service virtualization, defect tracking, observability, mobile testing, usability, visual testing, CI/CD environments, test management, and specialized testing techniques.
If you are researching a specific testing problem, you can go directly to the category that fits it.
It Includes AI Testing Tools
AT*Tools™ includes two separate AI categories.
AI-Assisted & Autonomous Testing Tools covers products and assistants that use AI for test authoring, maintenance, analysis, or autonomous execution.
AI/ML and LLM Evaluation Tools covers tools used to evaluate machine-learning models, prompts, agents, retrieval systems, and large language models.
This makes the directory useful for testers who are adding AI to their existing testing work as well as teams responsible for testing AI-based systems.
It Is Not a “Best Testing Tools” Ranking
AT*SQA does not rank the tools.
That approach makes sense because the right testing tool depends on the technology, project, budget, team, and testing problem.
A browser automation framework and an API client solve different problems. A test management platform cannot be judged on the same basis as a security scanner or an LLM evaluation framework.
AT*Tools™ gives you options to research rather than declaring one product the winner.
It Does Not Hide Older or Discontinued Tools
AT*SQA has a separate category for legacy, renamed, discontinued, or unclear tools.
Keeping those entries separate helps users identify products that may have changed names, been discontinued, or need further review instead of mixing them with tools that have a clearer current status.
AT*SQA Explains Where Its Information Comes From
AT*SQA states that it has not independently tested every tool listed in AT*Tools™.
Descriptions, features, pricing, compatibility, availability, and other details are based mainly on information published by vendors and open-source projects.
AT*Tools™ can help you find products that may fit your needs. You should still review the vendor or project information and evaluate a tool before choosing it for your team.
AT*Tools™ Is Being Updated
AT*SQA says it regularly adds and updates tools using current product information, open-source project activity, its AT*Work tools inventory, and input from the software testing community.
The main AT*Tools™ page also has sections for:
- What Is New
- What Has Been Updated
- Tool News
- What Is Getting the Most Chatter
AT*SQA also accepts suggestions from software testers, vendors, and open-source project maintainers. Users can report outdated descriptions, broken links, product name changes, and discontinued tools.
A Useful Resource for Software Testing Tool Research
No directory can tell you which testing tool is right for every project.
AT*Tools™ gives you a broad view of the software testing tools available across 25 different areas.
If you already know the type of tool you need, you can go directly to that category. If you are not sure what is available, the directory can help you discover tools and testing approaches you may not have considered.
With 624 tools and 25 categories, AT*Tools™ is one of the more useful software testing tool resources we have found.
Explore all 624 tools in AT*Tools™
Frequently Asked Questions About AT*Tools™
What is AT*Tools™?
AT*Tools™: The Comprehensive List of Software Testing Tools is a directory maintained by AT*SQA. It currently contains 624 software testing tools organized into 25 categories.
How many software testing tools are listed in AT*Tools™?
AT*Tools™ lists 624 tools as of August 5, 2026.
What types of software testing tools are included?
The directory includes tools for test automation, APIs, AI testing, LLM evaluation, performance, security, accessibility, mobile apps, test management, test data, visual testing, service virtualization, usability, observability, CI/CD, and other software testing activities.
Does AT*SQA rank the software testing tools?
No. AT*SQA does not present AT*Tools™ as a ranking of the best software testing tools.
Does AT*Tools™ include AI testing tools?
Yes. There are separate categories for AI-Assisted & Autonomous Testing Tools and AI/ML and LLM Evaluation Tools.
Has AT*SQA tested all 624 tools?
No. AT*SQA states that it has not independently tested every tool. Information is based primarily on current information published by vendors and open-source projects.