Crosscountry.aero is by far the best electronic logbook out there. You upload your igc file just like OLC and get an online flight analysis tool similar to SeeYou with logbook which extracts all the information you need to log from the igc file, including distance flown, release altitude, max altitude, takeoff and landing place, etc. all is left for you to do is enter your comments.. You can also export to excel and pdf. To get all the bells and whistles you need to buy a subscription (around $50 per year). Giving the quality and functionality of this service I am surprised it is not well known.

Ramy