GNU TeXmacs is a free wysiwyw (what you see is what you want) editing platform with special features for scientists. The software aims to provide a unified and user friendly framework for editing structured documents with different types of content: text, mathematics, graphics, interactive content. TeXmacs can also be used as an interface to many external systems for computer algebra, numerical analysis, and statistics. New presentation styles can be written by the user and new features can be added to the editor using Scheme.
BitNami DokuWiki Stack is an easy to use installer for DokuWiki, which is a standards-compliant, simple to use wiki mainly aimed at creating documentation of any kind. It is targeted at developer teams, workgroups, and small companies. It has a simple but powerful syntax that makes sure the data files remain readable outside the wiki and eases the creation of structured texts. All data is stored in plain text files; no database is required.
Rambutan is a set of end-user applications software that assists a system analyst in the gathering and categorization of facts for a requirements specification document. In its current state, the product consists of two programs that perform similar functions. A handheld application is used to gather facts in the client's site while a desktop application is used to edit and further refine the requirement statements in the analyst's office. Both applications allow the user to enter, modify, and display data that make up a requirements specification document.