FreeTable is a cloud database service that allows programmers to upload and download individual data values using a SQL-like API. Language bindings exist for Python, PHP, and Ruby. In many respects FreeTable is a data wiki, with notions of revision history, curation, and data rollback/roll forward.
Sequreisp is an ISP management software. It has a nice and powerful Web interface, and it can handle up to 3000 or more clients in a single server, thus it is oriented to small/medium ISPs and WISPs. It features load balancing, failover, prioritization, bandwidth control, P2P detection, Web cache, backup in a single file, VLAN support, and much more.
Website@School is a content management system especially designed for education. Blind and visually impaired webmasters can manage this CMS with a braille reader or speech synthesizer. It supports an unlimited number of sites, unlimited depth, RBAC, and with many educational features. It is also manageable by pupils.
Cinisis is a PHP library for reading CDS/ISIS databases. It's intended for integrating or migrating existing ISIS databases into other applications. It is a wrapper around other ISIS libraries and tools, providing a uniform interface and iterators for easily fetching data without bothering with internals.
Open Transactions is a solid, easy-to-use, financial crypto and digital cash library, including an API, server, and test client. It features anonymous numbered accounts, untraceable digital cash, triple-signed receipts, basket currencies, and signed XML contracts. It also supports cheques, invoices, payment plans, markets with trades, and other instruments. It uses OpenSSL and Lucre blinded tokens.