Open Annotation Server (OAS)

The current version of the Open Annotation Server (OAS) developed by CATCHPlus and CODA.

Line Cutout Service

Selected (rotated) blocks of written lines on scanned manuscript and automatically generate line strips.

Synchronized Annotation Viewer

Proof-of-concept CODA prototype that visualizes document image, transcription texts and associated named entities in a synchronized way.

Conversion code

Some converters of proprietary annotation formats to OA(C)


Linguistic analysis and Named Entity Recognition software for Dutch

Scratch4All / MONK

Annotation tool and search environment for word zones and line strips on scanned handwritten documents.