There are 3 repositories under vietnamese-tokenizer topic.
Underthesea - Vietnamese NLP Toolkit
A Fast and Accurate Vietnamese Word Segmenter (LREC 2018)
Vietnamese Tokenizer package based on deeplearning methods
Node.js SDK for yeu.ai
A python wrapper for VnCoreNLP
The simple regex vietnamese program.
HTTP wrapper of the VnCoreNLP library - A Vietnamese natural language processing toolkit
Go client library for the ndthuan/vi-word-segmenter service