A chat application that uses DNS queries to communicate. Apparently this is called DNS tunneling and its a sensitive field, can be blocked by some firewalls or other network stuff. I don't know if I should continue, still thinking about it
Faster cd that allows spelling mistakes. Uses damerau-levenshtein string distance algorithm to determine closest match. Supports changing multiple dirs at once (iterates through arguments or slashes). The project is available on the AUR as jcd-git. .rpm, .deb and .tar.gz are available in the github releases. Take a look in the README.md for a more detailed overview!