3. vecdbA simple "columnar database" based on memory-mapped files, written in APL
4. JarvisAPL-based web service framework supporting JSON or REST
5. MDAPLThe de facto standard for people who are looking to learn Dyalog APL from a book. This updated version is a work in progress.
6. MiServerMiServer- an APL-based web server - requires Dyalog APL available from http://www.dyalog.com