CpConverter - Code Page Converter - Convert HTML/Text files to different encoding formats e.g.

Microsoft Office Access - Access is now much more than a way to create desktop databases. It’s an easy-to-use tool for quickly creating browser-based database applications.

ConvertZ - ConvertZ is a program to convert Chinese/Japanese codes.

LiveCode Platform - It is Both Under the GPL and it is also Proprietary if using the GPL version the software you make...

UTFCast - UTFCast Professional is an efficient Unicode converter for windows. It can convert massive amounts of text to UTF-8, UTF-16 and UTF-32 at a very high speed. It supports over 30 codepages and has the ability to convert extra-large size files.

Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.