Say I have eclipse installed in office and home. Both eclipse are 3.5 but may have slightly difference, like plugins version. I'd like to commit the code to online repo when get off work and then checkout at home.

1. What would be a possible solution? github? sourceforge? Are they free?
2. Would those slightly difference in eclipse cause any problem? Since I might commit whole project folder which consist some configurations.

Can the community explain a bit or suggest some keyword? I will look up more online. Thanks.