clo++ is a command line option parser generator. Given an XML file that contains a description of your program and its options, clo++ can generate code to parse its command line. In addition to code generation, clo++ can also generate man pages. Other languages and output formats can easily be added because clo++ generates its output using templates.
Phormation is a set of PHP functions which provide a framework for developing any HTML form connected to a database backend (currently PostgreSQL, MySQL, and ODBC are supported). It allows you to write and make use of reusable widgets so you can develop Web sites more quickly. Phormation has more than 10 widgets including text field, date, file upload, and foreign key select, and is easily extensible. It has good documentation.
SISC is an extensible Java-based interpreter of the algorithmic language Scheme. It uses modern interpretation techniques and handily outperforms all existing Java interpreters (often by more than an order of magnitude). In addition, SISC is a complete implementation of the language. The entire R5RS Scheme standard is supported. This includes a full number tower including complex number support and arbitrary precision integers and floating point numbers, proper tail recursion, hygienic macros, and full support for first-class continuations (not just the escaping continuations found in many other systems).
the MS-TNEF degenerator is a Web frontend for a command line program called tnef. It accepts a "winmail.dat" file sent by Outlook users, decodes its contents, and lets the user download them. This is meant for users who keep getting Outlook attachments they can't read but don't want to use the command line.