J-Source was launched in the spring of 2007 by a collective of Canadian journalism schools and organizations led by the Canadian Journalism Foundation (chair: Thomas Kierans; executive director: Jody Jacobson), which was the project’s principal funder and administrator until December 2013. Initial development was made possible by grants from the Edward S. Rogers Sr. Graduate School for Advanced Communications at Ryerson University, the Canadian Media Research Consortium and the Ryerson Research Assistants Fund. Initial technical and administrative support by Joe Castaldo (School of Journalism, Ryerson University) and Ryerson’s Digital Media Projects team under the leadership of Mark Huras. The founding Editorial Committee members were Paul Benedetti (Western University), Colette Brin (Université Laval), Marc-François Bernier (Université Ottawa), Mary Doyle (Western University), Patricia Elliott (University of Regina), Dean Jobb (University of King’s College), Brian Gabrial (Concordia University), Abby Goodrum (Ryerson University), Linda Kay  (Concordia University), Mary McGuire (Carleton University), Bill Reynolds (Ryerson University) and Stephen Ward (University of British Columbia).

Since 2013 J-Source and ProjetJ have been managed by the journalism programs at  Ryerson University, Carleton University and Université Laval supported by financial contributions from Canadian media organizations, trade unions and individual donors. In 2017, ProjetJ was consolidated into J-Source with management by Ryerson and Carleton.

In 2019 J-Source began a relationship with J-Schools Canada/ÉcolesJ (j-schoolscanada.ca) the organization that represents post-secondary journalism programs in Canada and is the Canadian affiliate of the World Journalism Education Councils a major donor. Part of relationship involves a growing focus the publication of student journalism, journalism and media research and discussion of pedagogical issues for journalism faculty at J-Schools Canada/ÉcolesJ member institutions.

J-Source/ProjetJ has a monthly audience of more than 20,000 unique viewers and distributes a weekly newsletter to 4,500 subscribers that features highlights from that week’s contributions to the site. It also has an active Facebook site (facebook.com/jsource/ and Twitter feed (@jsource), oversees an active Jobs Board for journalism positions across Canada (http://j-source.ca/jobs-board/) and the popular feature media on the Move (http://j-source.ca/?s=media+on+the+move).