With Tinychat, you can create your own chatroom and invite people through one simple link. You can also embed your chatroom on your blog, myspace, personal site, and many other portals. You can even invite people through email and twitter.
MyStudiyo offers a rich solution for creating online quizzes. Make quizzes in just minutes and embed them in any website or invite players to your MyStudiyo
Exam Professor is a web-based tool that allows you to build, embed, and manage your own exams, tests or quizzes (or drill and practice) quickly and easily
web tool which allows you to upload a file or input a link to a file to give you a code which can be placed onto your website or blog. You won't ever need to upload a file to your own server again.