One project I'm on uses clockingit.com - it's a free hosted collab tool and it's also OSS in case you want to migrate from the free hosted version and host it y

One project I'm on uses clockingit.com - it's a free hosted collab tool and it's also OSS in case you want to migrate from the free hosted version and host it yourself down the road. It's pretty straight-forward and easy to get non-techy people to use (which may or may not be a critical attribute, depending on the makeup of the rest of your team).