HEIFTool
A GUI utility for converting HEIF images to PNG files. Originally developed for converting photos taken with Apple iPhone's at a photo store I worked at. To make deployment easy, I used the Inno Setup compiler to build the installer.
Released under the GPLv3 license.
Source repository: https://gitlab.com/bgc-nz/heiftool-qt-version.
Screenshot
bfontview
Tool for viewing glyphs across the whole UTF-16 codepoint range. Supports most standard font file types, either built in to the system, or dragged and dropped. Built with the Qt Framework, so can run on Windows, GNU/Linux and macOS.
This requires a separate program I wrote in Rust, to extract data from the Unicode XML database: https://gitlab.com/bgc-nz/ucdxmltoh.
Source repository: https://gitlab.com/bgc-nz/bfontview/