Easy to use, lightweight, standards-compliant wiki engine with a simple syntax allowing reading the data outside the wiki. All data is stored in plain text files, therefore no database is required.

GPL-2.0

PHP

Mediawiki

Wiki software package that powers Wikipedia and all other Wikimedia projects, serving hundreds of millions of users each month.

GPL-2.0

PHP

Pepperminty Wiki

Complete markdown-powered wiki contained in a single PHP file.

MPL-2.0

PHP

PmWiki

Wiki-based system for collaborative creation and maintenance of websites.

GPL-3.0

PHP

TiddlyWiki

Reusable non-linear personal web notebook.

BSD-3-Clause

Nodejs