Prototypo vs Runebender

Prototypo is an online app for designing typefaces from four parametric starting points: Prototypo Fell, Prototypo Grotesk, Prototypo Elzevir, and Spectral. Its controls cover more than thirty characteristics, including thickness, aperture, and roundness, with separate adjustments for serif details. Users can change individual letters or groups of letters, then export fonts in OTF format for installation on macOS, Windows, or Linux, or display them in a browser. A Chrome extension previews font changes on websites, and fonts can be sent to Glyphr Studio for further editing. Prototypo supports the Latin Extended 3 glyph set, but has no cursive templates and does not let users import their own fonts to modify. The maker says exported fonts use a CC0 license, permitting commercial use without permission. The free plan has limited parameter range and one week of support; Pro is $8.25 per month and Team is $49.96 per month. The FAQ lists a free trial and requires an up-to-date Chrome, Firefox, or Opera browser.

Runebender is a free font editor for UFO and Designspace sources, with tools for glyphs, paths, filters, components, anchors, masters, interpolation, spacing, kerning, feature code, color fonts, text shaping, font information, and font checking. It opens UFO and Designspace files, Glyphs files and packages, and compiled TTF or OTF fonts; Glyphs files are converted to UFO, while compiled fonts are opened as UFOs in memory. Babelfont packages can also be imported. Experimental local models can suggest a heavier glyph master from a lighter one, and local chat is available through font-ml. The browser editor runs on the user's machine without uploading files, but it has interaction gaps and is not recommended for real work. The native application has no packaged release and is installed from source with Cargo. Runebender is alpha software and writes UFO and Designspace files in place, so the documentation advises working on copies and keeping sources under version control. The project is licensed Apache-2.0 or MIT and maintained independently, not as an official Linebender project.