Birdfont vs FontForge

Birdfont is a font editor for creating vector graphics and exporting TTF, OTF and SVG fonts. It runs on Linux, Windows and macOS, and supports monochrome and color font formats. SVG files from Inkscape and Adobe Illustrator can be imported. The Open Source plan costs nothing and includes TTF and monochrome SVG fonts, kerning, ligature substitutions, alternates, SVG import and commercial use. The Freeware plan also costs nothing, and allows creation of free fonts under the SIL Open Font license. Commercial costs $4.99, paid once; it includes commercial fonts and one year of upgrades, while the purchased version continues to work afterward. Plus costs $9.99, paid once and adds color fonts, OpenType SVG, OTF, COLR/CPAL, single-stroke CNC fonts and variable fonts. Plus can export multiple static fonts from a variable master. Birdfont is also available through Steam. The app does not collect user data by default; crash reports are optional.

FontForge is a free, open-source font editor for Windows, macOS and GNU/Linux. It creates and modifies PostScript, TrueType and OpenType fonts, saves fonts in outline formats and can generate bitmaps. Users can draw letter outlines, set glyph metrics and ligatures, and manage related metadata. FontForge supports OpenType and Apple Advanced Typography tables, including GPOS and GSUB features. Its font, bitmap and metrics views offer ways to inspect and edit typefaces. For automation, it includes Python and a legacy native scripting interpreter; Python-package plugins can add tools to the Font View or Char View menus. The command line accepts PostScript, TrueType, OpenType, Mac resource, bitmap and SVG files, among others listed. The project makes source code available under a libre license and permits redistribution with or without a fee. Releases are available for Windows, Mac and GNU+Linux, with developer builds also offered. The Mac installation requires OS X 10.15 or later. The Windows page warns that the launcher may upset some antivirus and firewall applications. For questions, the homepage directs users to consult documentation and web searches before using its mailing list.