DokuWiki is a standards-compliant, simple to use wiki optimized for creating documentation. It is targeted at developer teams, workgroups, and small companies. All data is stored in plain text files, so no database is required.
Codiad is a web-based IDE framework with a small footprint and minimal requirements. Codiad was built with simplicity in mind, allowing for fast, interactive development without the massive overhead of some of the larger desktop editors.