CRFsuite (python-crfsuite) wrapper which provides interface simlar to scikit-learn
sklearn-crfsuite is thin a CRFsuite (python-crfsuite) wrapper which provides scikit-learn-compatible sklearn_crfsuite.CRF estimator: you can use e.g. scikit-learn model selection utilities (cross-validation, hyperparameter optimization) with it, or save/load CRF models using joblib.