AiEditor

Private deployment with your own LLM API key is the detail that sets AiEditor apart from most AI writing add-ons.

AiEditor is an open-source rich text editor with built-in AI features, made for developers who want to put an editor inside their own product.

You can run it on your own infrastructure and point it at a private model instead of sending text to a third party.

The editor works with various UI frameworks and is customizable, so it can fit into an existing front end.

Markdown is supported, and real-time collaboration is part of the feature set.

The AI side covers writing help and translation.

Commercial use requires a commercial license, so check that before shipping it in a paid product.

Customizing it may take real technical skill, and the AI features depend on whichever external model you connect.

For a team that wants control over where its text goes, that trade is reasonable.