The technical OpenType editor

An affordable font utility that allows users to visually edit the contents of tables in TrueType and OpenType fonts.
DTL OTMaster (OTM) is a highly sophisticated application for reviewing, editing and altering tables and contours of OpenType fonts (.otf and .ttf), TrueType fonts (.ttf) and TrueType Collection (.ttc) fonts, including CID-keyed OpenType fonts, CJK (Chinese, Korean, Japanese) and complex-scripts (Indic, Arabic etc.) fonts.

Version 2.4 highlights

NEW! Use the consistency checker to check which written languages your font supports and which characters are missing.
IMPROVED! Export OpenType Layout feature definitions into the AFDKO syntax version 2.5 used by Fontographer 5.1
IMPROVED! Add OpenType Layout feature definitions to any font using an AFDKO syntax version 2.5 file. OTMaster will intelligently omit the feature definitions that aren?t covered by the glyphs in the font ? so you can use one large ?master file? with your feature definitions, and OTMaster will only add the necessary features from it.
NEW! Change the version of the gasp and post OpenType tables.
IMPROVED! Numerous bugfixes and minor improvements.
Users of DTL OTMaster 2.3 can get a free update to 2.4

Overview of DTL OTMaster

DTL OTMaster reveals the secrets of your OpenType and TrueType fonts without your having to slog through text dumps or binary code. It makes the editing of tables easy and smooth using its graphical user interface.
Furthermore, it comes with a built-in Glyph Editor for proofing and editing contours or even drawing glyphs from scratch. The kern Table Viewer provides a kerning class editor for proofing and refining the kerning, and the GSUB/GPOS Table Viewer lets you visually test (and in case of GPOS also adjust) these OpenType Layout tables.
One of the most remarkable functions in OTM, is the option to import and export OpenType Layout features files. During import OTM compiles the OpenType Layout features with the AFDKO (Adobe Font Development Kit for OpenType) syntax (.fea) and produces binary OpenType Layout tables.

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