SHELECT is a simple program for using SQL like syntax to query tables that are simple text files. Its main advantage over same kind of tools is that you can really join tables.
SHELECT is published under GNU GPL licence.
Robi is a simple meeting ticket manager for small organisations that want to invite people in a hierarchical connected network. Using it, you can generate a bunch ticket, distribute them by mail to your network; people will be able to get invitation using their own ticket and you will be able to check the invitation at the meeting entrance by scanning them.
Robi is published under GNU GPL licence.
You can check the provided file's signature against my personal public key.