Here is a list of education technology companies and products with at least one female co-founder. If I am missing any tools here, let me know. This list is constantly being updated.
Katrina Stevens and Nicole Smith
Yasmeen Kassim
Heather Hiles
Ritu Jain
Betsy Corcoran
Alexandra Fleur
Jennifer Medbery
Aliya Bhatia, Ana María de Vries and Grace Landrieu
Dr. Deborah Hardy
Yasmeen Kassim
Lisa Lantz
Kasey Brown
Amy Lin
Mandela Scumacher-Hodge
Tess Brustein
Sarah Chou and Qian Wang
Esther Wojcicki
Ayah Bdeir
Lisa Fung and Maureen McAvoy
Kate Connally
Chandini Ammineni, Shilpa Dalmia and Peggy Chang
Jenny Chang and Wayne Jiang
Deb Liu
Jocelyn Leavitt and Samantha John
Stephanie Castilla
Alison Johnston
Karen Garrett
Coolmath Karen (real name not given)
Maya Bisineer
Catheryne Nicholson
Colleen King
Reed Howard
Dr. Louise Waters
Sue Khim
Jocelyn Leavitt and Samantha John
Diana Dell
Anna Sturrock
Julia Leonard
Karen Mahon
Miriam Altman & Alexandra Meis
Ana Albir
Ana Albir
Nikita Kapoor
Maya Goodall
Mariah Bruehl
Katy Hite, Amy Killebrew, Elizabeth Ludemann, Allison Parker, & Vicki Rakowski
Kathryn Tucker
Andrea Rincon
Kaylie Greaves
Erika Trautman
Libby Curran
Teri Blumenthal
Julia Franks