The following companies are known to provide third-party products for Arbortext:
- Piper Group Plc (now BAE Systems Customer Information Services)
- Absolute Data Group
- Document Solutions
- Design Science - "MathFlow for Arbortext" (MathML)
- Smart Communications, Inc. - MAXit Grammar Checker for Arbortext Editor 5.2; The MAXit Checker is a "plug-in" to the Arbortext Editor that allows full grammar, syntax and style checking. An ideal tool for companies who need compliance to ATA2200 and S1000D Simplified Technical English.
- Acrolinx - acrolinx IQ Intelligent Reuse (rule-based linguistic checking)