Text Helper
Usage
Add or select a Font object.
Open the Text Helper tab in the 3D View sidebar.
Type or paste text; toggle the floating toolbar from the panel header (overlay icon).
Use Font on the HUD to open the viewport font picker, or adjust formatting from the toolbar.
Preferences: Edit → Preferences → Add-ons → Text Helper.
Requirements
Blender 5.2.0 or newer
Multi-line sidebar textbox requires Blender 5.2+
Text Helper