Some projects that may be worthy to showcase:

MyIdolsList - Planned project

orderHi - Software and hardware solutions for small and medium businesses, limited to DACH region (Ordering, reservation, Point-of-Sale, Webdesign)

Vocabspace - Language learning app with interactive reading for Korean, Japanese and Chinese, iOS and Android (archived)

Companion for BDO - Unofficial helper tool for a popular MMORPG (archived)

Some open source projects can be found under https://github.com/BanhmiDev