Sealang Plus is a Chrome add-on developed by prad.nelluru that enhances the search functionality of Sealang.net's Old Javanese - English dictionary. By using Sealang Plus, users can now search for variants of a word, including those with varying diacritics. For example, if a user searches for "manusa," Sealang Plus will also search for variants such as manuśa, manūsa, manūṣa, and so on. Additionally, if the word starts with a vowel, the search is also attempted with an "h" at the beginning of the word.

Sealang Plus uses letter equivalent classes to perform these searches, ensuring comprehensive results. The extension is inspired by a tweet and the code is available on GitHub for those interested in exploring further. Sealang Plus is a valuable tool for anyone looking to enhance their Old Javanese - English dictionary search experience on Sealang.net.