The following page at CNN.com has a list of charitable sites and ways to help those injured in the Boston attack and their families:
And another link to help victims of the Texas explosion:
Also, you can use Goodsearch.com to raise money for these or other charities. It's free to use, no registration is required (although you have the option of doing so), and it works just like any other search engine:
If anyone knows of any other good charitable links to share, feel free to let me know.