I did just paste the description from the EAGLE Website if you still need it:
- 3 modules with identical user interfaces
- Hundreds of video tutorials available
- Regular free online trainings and free support through dedicated experts
- Active user forums that help solve design problems and give guidance
- User manual available for download or accessible from the software
- Compatible with Windows®, Linux® and Mac®
- Available in 32- and 64-bit versions
- Tens of thousands of free component libraries available
- Extensions (User Language Programs (ULPs)) that allow for customized features
- Large ecosystems of integrated 3rd party solutions (e.g. 3D,Simulation, Signal Integrity)
- Windows XP, Windows Vista, Windows 7, Windows 8.
- The 64 bit EAGLE version requires a 64 bit version of the operating system.[/li][/list]
- Linux based on kernel 2.6 for Intel computers, X11 with a minimum color depth of 8 bpp, libssl.so.1.0.0 and libcrypto.so.1.0.0. For the 64-bit version a 64 bit operating system is required and libc.so.6 with sub version GLIBC_2.14 or higher.
- Mac OS X version 10.8 to 10.10 for Intel computer.[/li][/list]
(
http://www.cadsoftusa.com/eagle-pcb-design-software/about-eagle/)