General

Ensembl genome browser
Ensembl is a genome browser for vertebrate genomes that supports research in comparative genomics, evolution, sequence variation and transcriptional regulation. Ensembl annotate genes, computes multiple alignments, predicts regulatory function and collects disease data. Ensembl tools include BLAST, BLAT, BioMart and the Variant Effect Predictor (VEP) for all supported species.

EpiGenie
Conferences and epigenetics news
EpiGenie is a team of folks who scour through PubMed, watch out for interesting epigenetics press releases, conduct interviews with epigenetics researchers, and work closely with the technology providers to stay on top of the most applicable work driving epigenetics-related research.

NIH: BLAST
Compare proteins and DNA sequences
BLAST finds regions of similarity between biological sequences. The program compares nucleotide or protein sequences to sequence databases and calculates the statistical significance.

PubMed
PubMed® comprises more than 34 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.