Applications Awards & Submissions Database
Here is a public Google spreadsheet filled with monthly deadlines for submission opportunities in the realm of writing and performance making.
You can also submit any opportunities you come across using this form. Focus is opportunities open to NSW based artists (local, interstate, national and/or international) but all submissions welcome.
Also check out the spreddy Melb/Vic based VIMH has here. Their commitment to commity building has certainly inspired this resource.