First off, for tons YouTube Subscribers, and get some views too check out SubXcess:
www.ytnuke.com for 2.5-6.5k free mobile views, now for the list.
http://jumpstartviews.com/?r=8630 for 2.5-5k views, and a few free views per day.
Use the following websites: (in order of what I think is the best to worst)
1. u2bviews - likes, comments, favorites, and views
2. Vagex - likes, comments, favorites, and views
Non-ref link: http://www.vagex.com
3. EnhanceViews - likes, comments, favorites, views, featuring, Reddit upvotes, Twitter followers, and Facebook likes.
non-ref link: http://www.enhanceviews.com/rpage.php?r=k9w9DCe8gNg=
4. MegaYoutubeViews - Lots of views
5. ShareYoutubeVideos - A lot of mobile views
6. View2.be - Slower but decent ammount of views
non-ref link: http://www.view2.be
7. EmpireViews - Gives good ammount of views, but has annoying loud websites in traffic exchange.
non-ref link: http://www.empireviews.com
8. HitLeap - It is more for actual websites, but also works with YouTube videos.
9.eBesucher - German traffic exchange with a high amount of members from all over the world!
non-ref link: http://www.ebesucher.com/
10. Websyndic - It is also for actual websites mostly, but you can get YouTube views too.
non-ref link: http://www.websyndic.com
11. ViewTubeTrain - Views the whole length of your video for high retention views.
13. TubeExposure - You can get credits really fast. Cons are it takes a long time for the videos to earn views.
non-ref link: http://www.tubeexposure.com
14. YTmax - You can get credits fairly easy, but it delivers views slowly.
non-ref link: http://www.ytmax.com
14. AddMeFast - Social Media, Instagram, YouTube likes, views, and subscribers & much more!
15. youlikehits - manual surfing (but you can use imacros for auto), auto traffic exchange, high speed views.
Non-ref link: http://www.youlikehits.com
16. like4like - social media, and youtube views, likes, comments, and subs.
17. AsiaCube - Social Media and Youtube subscribers, views, and likes.
non-ref link: http://www.asiacube.com
18. SocialMediaExplode - Social Media and Youtube subscribers, views, and likes.
non-ref link: http://www.socialmediaexplode.com
19. RapidLikes - Social Media and Youtube subscribers, likes, and views.
non-ref link: http://www.rapidlikes.net
20. SocialFans - Social Media and Youtube subscribers, views, and likes.
non-ref link: http://www.socialfans.eu
21. ZikiHits - Social Media and Youtube subscribers, views, and likes.
non-ref link: http://www.zikihits.com
22. AnHits - Social Media and YouTube likes, subscribers, and views.
non-ref link: http://www.anhits.com
These are all websites that I use a lot or frequently. I do reccomend you use most if not all of these websites. If I missed any you think deserve to be on here you can list them below and I will add them to the list.