SepPDF is a tiny PDF file splitter with drag-and-drop support.
CHK is simple checksum program that can verify downloaded files from the Internet, hash your files to ensure integrity and help detect duplicates. Supports drag-and-drop and most popular hash protocols including CRC-16/32/64, ED2K, MD4/5, SHA-1/256/512/3, BLAKE2sp/b, BLAKE3 etc.