Here is the list of Top Social Exchange (addmefast alternative) Sites based on recent Alexa ranking. In case I missed some sites falling between the numbers, Please post it below and I will update the list.
1. addmefast.com
Alexa Traffic Rank: 1,920
2. youlikehits.com
Alexa Traffic Rank: 2,112
3. twiends.com
Alexa Traffic Rank: 3,095
4. vagex.com
Alexa Traffic Rank: 7,754
5. socialmediaexplode.com
Alexa Traffic Rank: 10,310
6. traffup.net
Alexa Traffic Rank: 15,365
7. socialclerks.com
Alexa Traffic Rank: 15,950
8. shareyt.com
Alexa Traffic Rank: 20,636
9. enhanceviews.net
Alexa Traffic Rank: 21,512
10. u2bviews.com
Alexa Traffic Rank: 21,709
11. swapes.com
Alexa Traffic Rank: 29,511
12. my-follow.com
Alexa Traffic Rank: 30,512
13. plusfollower.info
Alexa Traffic Rank: 35,110
14. tubetoolbox.com
Alexa Traffic Rank: 39,642
15. hitfollow.info
Alexa Traffic Rank: 41,997
16. followback.info
Alexa Traffic Rank: 45,091
17. newfollow.info
Alexa Traffic Rank: 46,310
18. letgetmorefollowers.info
Alexa Traffic Rank: 49,955
19. likesbay.com
Alexa Traffic Rank: 59,724
20. linkcollider.com
Alexa Traffic Rank: 82,573
