A Wikipedia:Genome_browser is a web application for browsing genome annotations.
For example, JBrowse.
When combined, multiple forms of evidence tend to be more accurate than a single source, as each distinct form reduces overall uncertainty... Genome browsers facilitate genomic analysis by presenting alignment, experimental and annotation data in the context of genomic DNA sequences. -- Cline & Kent: Understanding genome browsing. Nat. Biotechnol. 2009;27:153-5.