In addition to adding files to your OSF project directly through your browser, you can connect many other web tools you may be using into your OSF. This enables files you store in such services to be accessible alongside the rest of your project materials without needing to move the files themselves or stop using other services you like. For more detail on what services you can connect and how to tie them into your project, see the [OSF Add-on guide](http://help.osf.io/m/addons/l/524148-connect-add-ons).
If some of your workflow involves custom software scripts, you can also use the [OSF's public API](https://developer.osf.io/) to add or modify your files on the OSF.