Ergonomic / Vertical Mouse
For those of you having Repetitive Strain Injury issues with mouse, here's a highly recommended mouse.
They have both right-handed, left-handed, and wired, wireless, versions. Be sure to pick the one you want. Evoluent VerticalMouse
The Evoluent VerticalMouse is favored by the well-known programer Jamie Zawinski (aka jwz) (he wrote the Netscape browser). See Celebrity Programers with Repetitive Strain Injury.
Comanro Ergonomic Ev Mouse
- Comanro Human Ergonomic Ev Mouse
- DPI 500/1000/1800/2500 adjustable
Microsoft Sculpt Ergonomic Mouse
For detail and video review, see Microsoft Sculpt Ergonomic Mouse 6000
Microsoft Natural 6000 Ergonomic Mouse
As of this one is no longer made. Replaced by Microsoft Sculpt Ergonomic Mouse 6000
Anker Ergonomic Vertical Mouse 1000
This one is very cheap. There are wired and wireless versions.
Delux Wireless Vertical Upright M618
You can try trackball. See Best Trackballs Comparison
there's also Contour Roller Mouse
There's also a SmartNav Natural Point Hands Mouse. amazon But it's few hundred dollars.