Canon 70D has a Canon EF/EF-S lens mount and currently there are 324 native lenses available for this mount.
Canon 70D doesn't have a sensor based image stabilization system but 112 of these lenses already comes with optical image stabilization.
Since Canon 70D has a APS-C sensor, it has a focal length multiplier of 1.6x so you have to multiply lenses original focal length with this multiplier to find the Full Frame equivalent focal length of the lens when mounted on 70D.
You may also also be interested in these:
Canon 70D Lenses with Image Stabilization
Canon 70D Lenses with Weather Sealings