We do in house annotations for many of our projects, as well as use third party services, in case of larger projects. One of our main collaborators in for annotations is rProcess.
rProcess is a team based in India. They offer many data annotation capabilities, including semantic segmentation, image segmentation, data labelling, named entity recognition (NLP) tagging in documents, data analytics, automatic speech recognition, chatbot training, and more.

source: rProcess.ai

source: rProcess.ai
rProcess.ai is committed to safeguard your privacy and have strict data security measures in place to protect your data. They are GDPR-compliant and their annotation services meet global quality standards.
Email: info@rprocess.net
http://rprocess.ai