NCRF++, a Neural Sequence Labeling Toolkit. Easy use to any sequence labeling tasks (e.g. NER, POS, Segmentation). It includes character LSTM/CNN, word LSTM/CNN and softmax/CRF components.
Why do you think that https://github.com/SCRN-VRC/SimpNet-Deep-Learning-in-a-Shader is a good alternative to NCRFpp