O'Dea co-founded the Silicon Republic online newspaper for science, business and technology with Darren McAuliffe in 2001. She is a champion of diversity in science, technology, engineering and mathematics and set up the Inspirefest conference to address inclusion at technology conferences.
She was awarded a fellowship of the Irish Computer Society for her work promoting women in the technology sector.  She was co-inducted into the Irish Internet Association Hall of Fame with Darren McAuliffe.
Opening the 2018 Inspirefest, the fourth year of the conference founded by Ann O'Dea, Ireland's Minister for Health Simon Harris "emphasised the role of women in Stem (science, technology, engineering and mathematics) and said that the future was being invented by people like those at this event" in Dublin https://www.irishtimes.com/business/technology/divide-between-art-and-science-is-disappearing-inspirefest-told-1.3539263
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- "Ann O'Dea: 'If you copy other events you end up with 90 per cent male panellists'". www.irishtimes.com. Retrieved 2018-06-22.
- Ravanona, Anne (2017-04-13). "Trailblazing Women: Ann O'Dea, CEO & Co-Founder Silicon Republic, CEO Inspirefest". Huffington Post. Retrieved 2018-06-22.
- "Fellowships awarded to Minister Richard Bruton, Ann O'Dea and Anne Heraty by Irish Computer Society". www.ics.ie. Retrieved 2018-06-23.
- "IIA Hall Of Fame". Net Visionary Awards 2017. Retrieved 2018-06-22.