A geometry package providing for both graphical and algebraic input
| Website: | www.geogebra.org |
| Cost: | Free – Open source |
| Availability: | Online |
| Top 100 Tools 2012: | - |
| Top 100 Tools 2011: | 50 |
| Top 100 Tools 2010: | - |
| Top 100 Tools 2009: | - |
| Top 100 Tools 2008: | - |
| Top 100 Tools 2007: | - |
