This is just a quick list of some OER resources -- by no means exhaustive or authoritative.
This presentation discusses using LibGuides for your course content instead of the traditional LMS (Blackboard, Canvas, D2L, etc.).
Presentation in PDF
If you'd like to try and take your course completely out of the LMS environment, i.e. completely in LG, perhaps some of these resources can help.
Asessment:
http://evscicats.com/blog/web-tools-for-teachers-assessment/
http://www.edutopia.org/blog/5-fast-formative-assessment-tools-vicki-davis
Engrade: https://www.engrade.com
Review of Engrade: http://edtechreview.in/reviews/176-engrade-online-tool-set-for-teachers
Rubrics