More and more evidences have shown that non-coding RNAs (ncRNAs), such as lncRNAs, circRNAs and primary miRNAs, could encode proteins or peptides. ncEP is a database for collecting ncRNA-encoded proteins or peptides, which have been validated by low-throughput experiments from published papers. ncEP contains features of the proteins or peptides encoded by ncRNAs, including their names, sequences, species, genomic locations, tissues or cell lines, experimental methods, data source and other detailed information.