Yes, installing new soft is evil if you just need to transfer a file. I mean, isn’t the internet is build for data transfering? What for you will install new soft? What I use is https://click2copy.com – it doesn’t require any additional installation and transfers files directly (without uploading). You select the file, click2copy creates the link, you sends the link to your friend, yozur friend opens the link – and the file transfer begins: browser-to-browser, without uploading or something. So, the data is transfered directly. That’s really the only one service in inet that do such an amazing stuff. Give it a try!