# Deque

> Deque sells digital accessibility testing software, audits, consulting and training to organizations building websites and mobile apps. Founded by Preety Kumar in 1999, it maintains the open-source axe-core engine and sells the Axe Platform to help teams detect, prioritize and repair accessibility barriers throughout development.

- **Founded:** 1999
- **Headquarters:** Herndon, United States
- **Founders:** Preety Kumar (Founder, CEO and board member)
- **Products:** axe-core, Axe DevTools, Axe Monitor, Axe Auditor, Axe MCP Server
- **Notable:** Open-sourced axe-core in 2015., Reported five billion axe-core downloads in August 2026., Named a Leader in The Forrester Wave: Digital Accessibility Platforms, Q4 2025, according to Deque’s published report material.

## Products & services

- **axe-core** — Open-source accessibility rules engine for HTML interfaces; released in 2015 under MPL-2.0.
- **Axe DevTools** — Web and mobile accessibility testing, browser extensions, guided tests, linting and development pipeline integrations.
- **Axe Monitor** — Site-wide automated scanning, prioritization, reporting and progress tracking.
- **Axe Auditor** — Structured manual accessibility testing and audit issue management.
- **Axe MCP Server** — Connects accessibility testing and remediation guidance to compatible AI coding agents, with human approval of fixes.
- **Deque University** — Self-paced and instructor-led digital accessibility education, including disability scholarships.
- **Audits, consulting and remediation services** — Expert evaluation, accessibility program strategy, remediation guidance and accessibility conformance reporting.

## Achievements

- Open-sourced axe-core in 2015.
- Reported five billion axe-core downloads in August 2026.
- Named a Leader in The Forrester Wave: Digital Accessibility Platforms, Q4 2025, according to Deque’s published report material.
- Deque reports more than 10,000 completed accessibility audits and 200,000 training learners.
- Blue Bottle case study reports an 87% reduction in accessibility issues within four months.

## Latest updates

- **2026-09** — Developer Hub September 15 release notes added project data-shape and repository locking after the first successful session.
- **2026-08** — Preety Kumar published a reflection on Deque’s long-running Microsoft accessibility collaboration on August 25.
- **2026-08** — Deque announced five billion axe-core downloads on August 18.
- **2026-04** — Deque published Blue Bottle’s reported 87% issue reduction over four months.

## Links

- Website: https://www.deque.com/
- LinkedIn: https://www.linkedin.com/company/deque-systems-inc/
- Twitter/X: https://twitter.com/dequesystems
- GitHub: https://github.com/dequelabs
- YouTube: https://www.youtube.com/@DequeSystemsInc
- Bluesky: https://bsky.app/profile/deque.com
- Facebook: https://facebook.com/dequesystems

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Profile page: https://yespress.io/deque
Published by YesPress — https://yespress.io
Last updated: 2026-09-30