While I don't have any experience personally managing students' online tech projects (today was my first day of teaching ever), my first career was as a computer techie, so some ideas spring to mind.
Google Docs is of course fantastic. I actually made a video for my husband's high school class on creating a google doc. Feel free to use it in your class if you think it appropriate:
There are also lots of programs and services that are popping up with the intent of organizing one's life. Many of these can be connected to one another and have multiple uses and sharing options. Two that I would suggest are:
If you're looking for ideas for tech projects, creating a wiki would definitely be fun. My persona fave is:
Creating a blog is also another option. I like to use blogger, especially since Google owns it and so it works great with Google Docs:
You could also create an e-book together if you like as well using Tikatok. It's a nice option because even if your tech goes down, kids can work on story line, illustration, etc. with or without their comps.
Hope some of these help!