Graphite is a programmable Unicode-compliant smart font technology and rendering system developed by SIL International as free software, distributed under the terms of the GNU Lesser General Public License and the Common Public License.

[2] Graphite is based on the TrueType font format, and adds three of its own tables.

This makes Graphite especially suited for minority writing systems that cannot rely on applications to provide built-in rendering information.

In this regard, Graphite is similar to AAT and different from OpenType which requires applications to provide built-in rendering information.

It is also available on Mac OS X Snow Leopard[3] although with AAT, macOS already provides a technology suitable for minority scripts.