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Open Source Assessment Platform

TAO Core

The foundation of the TAO solution stack – Gain access to the shared innovations of a global community and benefit from the guaranteed flexibility, control, and cost-savings of open source assessment software.
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A desktop monitor showing the TAO Math Entry interaction in TAO Core and a laptop showing the text reader and audio recording interactions in TAO Core.

The Power Behind TAO is Open

Championing open source and open standards allows us to make our platform highly available to a global community of educators and learners — and means you are always in control of your testing tools. Driven by an open ethos, TAO serves leading institutions of all sizes, so you have the freedom to collaborate with peace of mind, access innovation faster, and benefit from technology that evolves with your needs.

TAO’s open source test management platform offers you the most choice when it comes to running your digital programs. From how you deploy tests to how you visualize data, you get the foundational tools and flexibility to choose.

  • Free to download 
  • A digital assessment platform ideal for institutions that want to host and manage a solution in-house
  • Open source developments become yours by default 

Collaborate with/ Peace of Mind. Build with Confidence.

Leverage a complete open source test management system. Whether you’re piloting digital assessment in a small-scale deployment or launching your first testing campaign, TAO Core can help you get started.
All-in-One Platform
Multi-Lingual
Interoperable by Design
Access Shared Developments
Eliminate Licensing Fees
Implement Custom Features

An All-in-One Assessment Platform

The TAO assessment engine cohesively combines assessment authoring, rostering & delivery, and reporting into a single secure solution. And with a range of built-in items from multiple-choice to complex simulations, you can create hands-on, authentic assessments that reflect how students learn today.
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Reach More Learners Globally

TAO is available in more than 30 languages worldwide, including Arabic. In addition to the TAO Core open source code, the platform supports contributions to language localization to help support education for the greater good.

Interoperable by Design

TAO is the only open source assessment system built on QTI open standards from the ground up to seamlessly plug and play with your digital ecosystem. With TAO, software interoperability means your testing tools, content and data are always in your control.
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Access Shared Developments

TAO enables free access to a global community of innovators, where new platform developments, support, and best practices are shared openly. Plus, the continuous open source code enhancements that we develop automatically become yours, so you can dramatically lower your technology ownership costs.
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Eliminate Licensing Fees

Say goodbye to expensive proprietary licensing fees. Download TAO at no cost and take advantage of the security of your existing hosting infrastructure, along with the expertise of your IT team to manage the platform in-house.
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Implement Custom Features

Freely extend the TAO Core platform with new applications, features, and enhancements to support continuous innovation in an ever-changing education landscape.
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Over 100 Million Tests Delivered in 194 Countries Worldwide

"Experimenting with TAO has given us a boost of confidence that the open source assessment solution is a reliable alternative to those offered by traditional vendors in the market."
The New York City Department of Education
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Additional Resources

Access free training and support resources from our Knowledge Base to help you master our open source assessment tools.

TAO User Guide TAO Training Center TAO Forum

Get Started on Your Terms

Download our open source test management system today! With installation methods geared toward both educators and developers, it's never been easier to start building better assessments.
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Looking to Upgrade?

Compare TAO Core with our paid solutions, TAO Ignite, Pro, and Enterprise, to see how the platform features and services stack up side-by-side.
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