oobash is an oo-style framework for bash 4 written in bash. It provides tools for rapid script development and huge libraries.
OpenProtect is an anti-spam server that filters spam and blocks viruses, phishing, and other malware. Acts as an SMTP gateway and integrates with any email server like Postfix, Sendmail, qmail, Exim, Microsoft Exchange, Lotus Domino, Zimbra, etc.
A system optimization tool.