This brief list, compiled in January 2014 and updated when noted, is an aggregation of  existing artist resources.  Many of the notes resources are focused in NYC.  -Jeff Bergman

Artist Resources-

Online:
Res Artis http://www.resartis.org/en/
The worldwide network of artist residencies and residential art programs.

Re-title.com http://blog.re-title.com/opportunities/
re-title.com is the information resource for emerging and professional contemporary art, providing directory services for internationally focused artists and galleries.Re-title has a thorough list of grants, residencies and calls for work.  It has an International focus.

Residency Unlimited http://www.residencyunlimited.org/
Residency Unlimited (RU) supports the creation, presentation and dissemination of contemporary art through its unique residency program and year-round public programs. 

Creative Commons http://us.creativecommons.org/
Creative Commons licenses help creators retain copyright while allowing others to copy, distribute, and make some uses of their work, at least non-commercially.

in New York

New York Foundation for the Arts http://www.nyfa.org/
The New York Foundation for the Arts’ mission is to empower artists at critical stages in their creative lives.  NYFA provides grants, lists of residency and grant opportunities and regular listings of free art events and calls for participation.  They are very important to the working artists in NYC.

Lower Manhattan Cultural Council http://www.lmcc.net/
LMCC brings art where it’s least expected and engages the ideas of the moment by exploring the links between culture and capital. We curate and commission art installations, produce and present performances, and champion the arts as a vital component in creating and maintaining a vibrant community.
LMCC offers granted studio spaces and group shows are curated and seen by gallerists, curators and other artists.

Elizabeth Foundation for the Arts http://www.efanyc.org/
EFA has an incredible project space and studio space program, as well as the Robert Blackburn printshop.

Recess http://www.recessart.org/
Recess is an artists’ workspace open to the public.  At once a studio and exhibition space, Recess initiates lasting connections between artists and audiences, presenting ambitious projects that embrace experimentation and focus on process.

Chashama http://www.chashama.org/
Chashama supports thriving cultural communities by transforming temporarily vacant properties into spaces where art can flourish. By recycling and repurposing buildings in transition, we invest in neighborhoods, foster local artists, and sustain a vast range of creativity and culture.