However since Satan has promise to mislead mankind too, it also continually use new tactic to create sect in religion or even manage to convince people that, there is no God and the religion is the instigation of all problem. Here are small list of popular manmade religions.
Yet according to Allah only system valid is called Islam. However regardless whatever activity they do they will not succeed. All they are doing is creating problem for themselves. If analyse these group, all they doing is, calling each others are disbeliever & hating each other , also they are very happy on their belief, and the Islamic cult has taken Al- Islam as their personal, cultural, national, or private religion anyway please ponder on some verse below to grasp my understanding
The Quran 3:19
The Religion before Allah is Islam (submission to His will): nor did the people of the Book dissent therefrom except through envy of each other, after knowledge had come to them. But if any deny the Signs of Allah, Allah is swift in calling to account
The Quran : 15:9
We ,even, We, reveal the Reminder, and We verily are its Guardian
Allah (GOD) promise,The protection of HIS BOOK. Therefore the protection of true islam is automatically secure. And because of this' God made each sect to chose their own names.
The Quran : 23: 53
But they have broken their religion among them into sects, each group rejoicing in its belief.
The Quran : 30:32
Of those who split up their religion , and became sects, each sect rejoicing in that which is with it.
The Quran: 6:159
Verily, those who divide their religion and break up into sects , you have no concern in them in the least. Their affair is only with Allah, Who then will tell them what they used to do.
The Quran: 16:125
Invite to the Way of your Lord with wisdom and fair preaching, and argue with them in a way that is better. Truly, your Lord knows best who has gone astray from His Path, and He is the Best Aware of those who are guided.
The Quran: 3:85
And whoever desires a religion other than Islam, it shall not be accepted from him, and in the hereafter he shall be one of the losers
The :Quran : 3:102
O you who believe! be careful of (your duty to) Allah with the care which is due to Him, and do not die unless you are Muslim.
The Quran: 3:67
Ibrahim was not a Jew nor a Christian but he was upright , a Muslim and he was not one of the polytheists
The Quran: 22:78
And strive for Allah with the endeavour which is His right. He hath chosen you and hath not laid upon you in religion any hardship; the faith of your father Abraham. He hath named you Muslims of old time and in this (Scripture), that the messenger may be a witness against you, and that ye may be witnesses against mankind. So establish worship, pay the poor-due, and hold fast to Allah. He is your Protecting friend. A blessed Patron and a blessed Helper!
These sects are divided some category, is because the founder / follower of those sects, directly or indirectly, class him/their founder leaders as a new prophet / messenger of GOD. Those who don’t declare new Prophet, but their action, believe and egos prove they are also taking similar view .Here are some cult they claim they are practicing Islam yet they believe another new messenger after prophet Muhammad [s] and too bad their bogus prophet does not authorised by Al-Quran but the good news is Allah made them cult to chose their own name/ title which keep Islam pure.
Nation of Islam
Also there are some cults whom do not declare new messengership, yet they too reluctant to follow their own Imam / Guru's like another prophets / messengers
CULT'S WITH IN LABEL ISLAM
Hanifi, Maliki, Shafi, Hamboli,Berlohbi, Wahabi, Tablighi, Dawbondi .....
Twelver, Ashari, Usuli, Akhbari, Ismaili, Alawi, Kharijite
Chisti Nakshabondi Qadri
Also there is other small organised groups adopted from Sunni & Shia cult. They too follow their leader strictly and they mainly using Islam to gain political statues or leadership and gain wealth from ordinarily people
Taliban, Jomayati Islamiya, Hizbut-Tharir, Jihadis, Ikwahni, ife, Imuk...
However since Allah said about these sects Their affair is only with Allah 6:159 Therefore I don’t wish to involve on argument /accusation to prove anyone ideology is incorrect, since there is enough information available through themselves if one wish to research.But I think it is best to inform mankind, at least briefly about all of them well-known sects, which divided the great one religion ( Islam) into so many sects and create confusion / obstruction for mankind to follow this beautiful system of Islam.
The Quran: 2:62
Those who believe (Muslim), and those who are Jews, and Christians, and Sabaeans - whoever believeth in Allah and the Last Day and doeth right - surely their reward is with their Lord, and there shall no fear come upon them neither shall they grieve.
It is best, for sake of unity in mankind if we keep difference of opinion aside and unity upon what ever in common regardless of whichever religion or sect some one belong to.
The Quran 3:64
Say: "O People of the Book! come to common terms as between us and you: That we worship none but Allah. that we associate no partners with him; that we erect not, from among ourselves, Lords and patrons other than Allah." If then they turn back, say ye: "Bear witness that we are Muslims
Lastly I sincerely advice to myself and to everyone that we must avoid all and every kind of SECT and just simply believe & trust on Allah alone, may Allah guide us all to His straight path.