- Moveable Type (and TypePad)
- Firefox Extension
- Safari Extension
- Greasemonkey scripts for inclusion in web-based apps like Bloglines, Google Reader, etc.
- Add more in the comments…
I haven’t built add-ons for most of these platforms before, so I’d love to work with folks who do have experience on these platforms port it over. I set up a Share This/Share Icon developers forum to help get things started.
If you want to port Share This to another platform leave a comment, head over to the forum or get in touch and we’ll get it built.