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Houghton Mifflin Harcourt Learning Technology
 The former Riverdeep logo | |
| Company type | Subsidiary |
|---|---|
| Industry | CD-ROM software Educational video game |
| Founded | 1995 (Riverdeep Interactive Learning Limited) |
| Headquarters | |
| Parent | Houghton Mifflin Harcourt |
| Website | hmhco |
Houghton Mifflin Harcourt Learning Technology, originally started as Riverdeep Interactive Learning, is a publishing house for educational online and CD-ROM products based in San Francisco, Boston and Dublin, Ireland. Founded in 1995, Riverdeep was principally the creation of the Irish ex-investment banker Barry O'Callaghan. O'Callaghan was Riverdeep's CEO and controlling shareholder.[1] Riverdeep also acquired the companies Broderbund, The Learning Company and Edmark, and became a distributor for said companies.
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