This work carries out a computational analysis of Dholuo morphology. Major morphological components of the prevalent Dholuo words are explored. These include tense, verbs and nouns derivation using the Hunspell tool to develop an open source Spellchecker in Dholuo. The Hunspell tool is used to create two files namely the affix and the dictionary files. The affix file enables the creation of all the rules involved in deriving the nouns and the verbs from the root words. All the root words (stems) plus the appended rules are stored in the dictionary file.