Malayalam to Malayalam Dictionary

• Sabdatharavali
• Malayalanighandu
• Malayalam Wiktionary

Malayalam and English Dictionary

• Hermann Gundert
• Olam

Malayalam to English Dictionary

• M. I. Warrier
• English Wiktionary

English to Malayalam Dictionary

• Nila
• The V V English Malayalam Dictionary By K Raman Menon (PDF)

Multilingual Dictionary

• Njyattela Shreedharan's Malayalam Kannada Tamil Telugu Tetralingual Dictionary
• Yugarasmi's Illustrated English Malayalam Tamil Hindi Arabic Dictionary (PDF)

Names of Popular Printed Dicitionaries/Thesauruses

• Malayalam Thesaurus Padanweshana Sabdakosam by Nayar N B, DC Books, ISBN - 8126405856
• English English Malayalam Dictionary by Ramalingam Pillai T, DC Books, ISBN - 8171300103
• Abhinava Malayala Nikhandu by C. Madhavan Pillai, D.C. Books, ISBN: 8175210001

Other Dictionaries

• Padakosham - English → Malayalam IT Dictionary
• Niyamapadakosham - Legal Glossary
• Granthappura - Collection of Public Domain Dictionaries (PDF)
• List of Other Dictionaries/Resources