Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of feature sets available in various tools. Each column represents specific features and whether or not they are supported by each toolkit (rows). Cells are highlighted in blue when that feature is present, in grey if it is not clear whether or not a particular feature is supported and in white if the feature is not supported. For each tool a URL is provided.
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