Level 10 Mission: Impossible. The rarest of all private trackers.
AoM
Exigo
Level 9 These trackers besides being very rare have a very limited maximum membership count.
FSC
HDBits.org
Level 8 Even rarer. Mostly only staff members send out invites or invite applications.
DB9
FTN
Pedro's
Level 7 These trackers are very difficult to get in to. It may be easier to find someone who is giving away their account, as opposed to an invitation.
TS-Tracker
InTheShadow
NorBits
HD-Spain
Level 6 Rare trackers but not impossible.
CosaNostra
PolishTracker
Bit-Vault
TheVault
HDCenter
BTGigs
BaconBits
CHDBits
SceneHD
AwesomeHD
Level 5 Level 5 trackers are not given away for free. Everybody and anybody is trying to get into these sites from here up.
LzTr
HDWing
BitHUmen
TranceTraffic
TheOccult
DVDSeed
BTN
GFT
Fux0r
x264
Level 4
BitMe
BitMeTV
What.CD
PTN
ScienceHD
GigaTorrents
CartoonChaos
MusicVids
Deli.sh
nCore
RevolutionTT
PreToMe
CinemaGeddon
ComicBT
SceneAccess
FinBytes
Karagarga
HDCorea
Sinderella
Level 3 The trackers from this level and up are harder to get into. Having said that, most of these Level 3 sites are offered freely through tracker "giveaways".
PassThePopcorn
TehConnection
PixelHD
TorrentLeech
StopThePresses
HDTorrents
Waffles
BeatHau5
IPTorrents
PianoSheets
SceneFZ
FunFile
BlackCats-Games
GazelleGames
TVVault
UHDBits
TheHorrorCharnel
MySpleen
MyAnonamouse
TVTorrents
Goem
Jpopsuki
TopHos
TotallyKids
DesiTorrents
Secret-Cinema
Level 2 These trackers are easy to obtain. Chances are you will get in these sites easily by asking in the invite section of tracker invite websites. Many of these are often open publicly to new signups, as well.
Acid-Lounge, AudioBookTorrents, Audionews, Audiozone, BeyondHD, BitLeechers, BitSoup, BitSpyder, BTNext, BWTorrents, ChinaHDTV, DanishBits, DimeaDozen, Diwana, Elbitz, EliteBits, ExtremeBits, FileBits, FileList.ro, FluxGamer, Gormogon, GFXNews, LearnBits, Midnight-Scene, NTorrents, PowerScene, ProAudio-Torrents, PussyTorrents, SceneTime, SceneTracker, ShareReactor, SoftTorrents, SoundDamage, Speed.CD, SwePiracy, TheInternationals, TheSharingZone, TheShow, TorrentBits.ro, TorrentBytes, TorrenTech, TorrentZilla, TranceBooster, TVJunkies, TV.Torrents.ro, UKNova, VIPv2, XBOX-Sky, XtremeZone, XW Torrents
Level 1 These trackers are mostly often open for signups. Those looking to join can register with ease.
HDBits.ro, TVTorrents.ro, PussyTorrents, SceneTracker, SoftTorrents, SoundDamage, TheSharingZone, TorrentBits.ro, TorrentBytes, TorrentZilla, TranceBooster, TVJunkies, UKNova, VIPv2, XBOX-Sky, XtremeZone, XW Torrents, Libble, Demonoid, Bitshock, HD-Evolution, Twilights, SceneBits, PleasureDome, LearnFlakes, FuckLimits, DocsPedia.