A collection of integrated tools and libraries using the Go programming language.

• argp: Command line argument parsing, including parsing lists and maps and configuration files.
• canvas: Vector graphics library that can output raster images, SVGs, PDFs, HTML Canvas, TeX, PostScript, etc. file formats.
• font: Font parsing and manipulation for TTF, OTF, TTC, WOFF, WOFF2, and EOT file types.
  • cmd/fontcmd: Font toolkit that can select a subset of glyphs from a font, merge fonts, or show font information and display glyphs in the command line or as a raster image.
• geo: Geospatial library including an OSM PBF file parser and geometry extractor.
• locale: Handling of locale-specific parsing of dates, date intervals, currencies, etc using the CLDR dataset.
• log: Package-wide logging to console/file/journald including levels, colours, datetime and source file & line number.
• mail: Mail related utilities, including parsing DMARC and SMTP TLS reports and the milter protocol.
  • cmd/milter: A mail filter to prevent e-mail spoofing, use Sender Rewriting Scheme (SRS), and parse SMTP TLS/DMARC reports.
• minify: High-performance minifiers for web file formats, such as HTML, CSS, JS, JSON, and XML.
  • cmd/minify: Command line tool to minify files.
• parse: Parsing utilities with parsers for (mainly) web formats, such as HTML, CSS, JS, JSON, and XML.
• prompt: Command line prompting by scanning into any variable type using a text, select, or checkbox input prompt.