A Compendium of NP optimization Problems.
Open Problems Project.
Open Problem Garden.
Problem in Graph Theory.
Graph Classes and their Inclusions.
Computational geometry Algorithms Library (CGAL)
Parameterized Complexity.
Recent Advances in Parameterized Complexity.
Recent upcoming Conferences.
Journals in Discrete Mathematics and related fields.
Know the Researcher ( DBLP, Researchgate ,
Google Scholar , Arxiv ).