This is a pretty good web-based audio editor. This could serve as a good replacement for Audacity or GarageBand. It has some great effects and a good library of sound clips. It operates in much the same way as Audacity of GarageBand, just in your web browser.
This is a great and easy-to-use site that allows you to create professional looking Photoshop-style effects with little effort. Do you want to see yourself on the cover of Rolling Stone, as a painting in an art gallery, or as a tattoo? Select an effect from the front page, upload a picture, make any necessary adjustments (e.g. zoom in on face), and view the result. Just be aware that all original photos and the resulting images are publicly viewable.