FontLab is a professional font creation software used by type designers to create, edit, and manage fonts. It offers a range of tools for drawing and modifying glyphs, allowing users to design custom typefaces from scratch or refine existing ones. The software supports various font formats, including TrueType, OpenType, and Web Fonts. With its user-friendly interface and powerful features, FontLab is popular among both beginners and experienced designers in the typography field.