In this talk, the speaker discusses the importance of open source software in improving accessibility. They highlight that accessibility is not just about helping people with disabilities, but also about making the internet more usable for everyone. Open source communities are advantageous for accessibility because of their focus on bug tracking, community interest, and collaboration. The speaker also emphasizes the need for open accessibility reporting and the involvement of people with disabilities in testing and development. They discuss various open source tools and projects that promote accessibility, including the development of the OpenACR platform for creating accessibility confirmation reports. Overall, the talk emphasizes the benefits of open source software in driving innovation and inclusivity in the technology industry.