Donovan published Androphilia: A Manifesto: Rejecting the Gay Identity, Reclaiming Masculinity under the pseudonym Jack Malebranche in 2006.

[6]: 243 [10] In this book, he advocates for a societal structure he calls "the gang" or "The Brotherhood": small groups of men banding together for survival against the outside world.

[8]: 100, 112  Donovan also wrote for another of Spencer's publications, Radix Journal, for Jared Taylor's American Renaissance, and for Greg Johnson's Counter-Currents.

[17] In Milo Yiannopoulos's March 2016 Breitbart article, "An Establishment Conservative's Guide to the Alt-Right", he relied on Donovan's writings alongside those of Richard B. Spencer and Steve Sailer.

[4][8]: 112  Much of Donovan's ideology centers around "The Brotherhood", his ideal social and political structure which he says is based around the "tribal" relationships between male warriors.

[8]: 113  Researcher Matthew N. Lyons has contrasted Donovan's Brotherhood ideal, where male camaraderie is central, to that of the Christian right, which heavily focuses on the family unit.

Lyons has said the Wolves of Vinland were an example of Donovan's "Brotherhood" ideal, as they performed group rituals including animal sacrifice, and had members fight one another as a "test [of] their masculinity".

[23] He has called for restoring "traditional" gender roles, restricting women to birthing and raising children, and preventing them from leadership in society or politics.

[17] Donovan's ideology are usually characterized as part of the manosphere and alt-right movements, and have been described as male supremacist, white nationalist, and accelerationist.

[8]: 172 [24] Donovan was sympathetic towards the white nationalist goals of the movement, such as promoting racial separatism and fighting "anti-white bias".

[6]: 251  Shane Burley wrote that Donovan was well received among the alt-right because of "his extreme anti-feminism and defense of male violence", and that "his presence helps to round out the Alt Right's ideas about gender, introduces the Men's Rights community to their work, and he has pushed the reclaiming of Nordic racial spirituality and close-knit tribal structures that are ethnically defined".

In May 2017, Donovan wrote an essay title "Why I am not a White Nationalist", describing how he does not wish to organize with anyone, preferring instead "to hang out in the woods with ... the people who I am oathed to, my tribe, the Wolves of Vinland".

He advocates a dissolution of the United States, which he believes to be on the verge of collapse, through a process called "pan-secessionism", in which societies would be devolved into racially-segregated autonomous zones.

[8]: 119  In his book A Sky Without Eagles, he advocates "pan-secessionism", an idea in which racially segregated, small, decentralized "homelands" would form.

[4] Donovan has also advocated for a version of "anarcho-fascism",[5][8]: 114  which he said refers to a "unified male collective... bound together by a red ribbon of blood.

"[8]: 114  He later said that he wasn't "an anarchist or fascist proper", but was rather emphasizing that "revitalizing tribal manliness will require a chaotic break from modernity.

Donovan viewed the predicted failure in a positive light, as an opportunity make America "a place where men can restart the world".

[8]: 114  He wrote that he would no longer allow white nationalists to use or publish his writing, criticized Richard B. Spencer for describing the alt-right as a white nationalist movement, and decried the Unite the Right rally for bringing members of the alt-right together with neo-Nazis and members of the Ku Klux Klan, who he wrote "actively despise me and my friends".

He has stated that straight people deserve more power and privilege due to the perceived inferiority of gay men's "reproductive sexuality" to that of heterosexuals.

[6]: 244 Investigative journalist and right-wing extremism expert Chip Berlet noted that the emergence of homosexual figures such as Donovan and James O'Meara among the alt-right in the United States was unusual compared to white supremacist groups in Europe.

[4] In a May 2018 interview with The Hollywood Reporter, Fight Club author Chuck Palahniuk listed Donovan as an influence on his own writing.

Palahniuk, in part, replied, "I read Jack Donovan because he's one of the few men writing about male issues with the skill and passion of a Roxane Gay or Margaret Atwood.