ActiveLedIt!
A UNICODE word processor rich text control. By Sophist Solutions.
Chado Software
SpellText: a text box component that checks spelling as you type. SpellServer: spellchecking for your ASP web sites. SpellEditor: a full Rich Text box that checks spelling as you type.
Exontrol ExEdit
Add to applicaton an easy-to-use edit control that supports built-in HTML format, and syntax highlighting as well. [Control, Commercial]
Input Pro
Collection of formatted edit controls. By FarPoint Technologies Inc.
Polar SpellChecker
Spell checking component that is bundled with 12 language dictionaries including English, German, French, Italian, Spanish, Dutch, Swedish, Danish, Latin, Slovenian, Czech, and Polish. By Polar.
TachyonSpell
ActiveX spell-check component. Contains an English dictionary of 102,000 words, and uses "Fuzzy Logic" for its suggestion matching algorithm. [Commercial]
TX Text Control
Provides word processing functionality in component form. By Imaging Source.
UniToolbox
A set of Unicode-aware ActiveX controls and utilities for creating Unicode-enabled software. [Commercial]