Best Open Source Documentation Software 2026

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Browse free open source Documentation software and projects below. Use the toggles on the left to filter open source Documentation software by OS, license, language, programming language, and project status.

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99.99% Uptime for MySQL and PostgreSQL on Google Cloud
Enterprise Plus edition delivers sub-second maintenance downtime and 2x read/write performance. Built for critical apps.

Cloud SQL Enterprise Plus gives you a 99.99% availability SLA with near-zero downtime maintenance—typically under 10 seconds. Get 2x better read/write performance, intelligent data caching, and 35 days of point-in-time recovery. Supports MySQL, PostgreSQL, and SQL Server with built-in vector search for gen AI apps. New customers get $300 in free credit.

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1

WackoWiki

WackoWiki is a light and easy to install multilingual Wiki-engine.

WackoWiki is a light and easy to install multilingual Wiki-engine. Supports WYTIWYG-editing, page rights (ACLs), design themes (skins), file upload, email notification and much more. Compatible with PHP 8.0 - 8.5 and MariaDB / MySQL / SQLite.

2 Reviews

Downloads: 11 This Week

Last Update: 2 days ago
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2

Foswiki

Foswiki is an Enterprise wiki, typically used to run a collaboration platform, knowledge base or document management system. Users can create wiki applications using the Topic Markup Language, and developers can extend its functionality with plugins. Foswiki stands for "Free and Open Source" wiki to emphasize its commitment to Open Source software.

10 Reviews

Downloads: 5 This Week

Last Update: 2025-12-18
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3

gjots2

hierarchical note jotter - organise your ideas, notes, facts in a tree

2023/04/04: MIGRATED TO https://gitlab.com/wef/gjots2 gjots2 is a fairly simple jotter (outline processor) application for your desktop. See http://bhepple.freeshell.org/gjots

3 Reviews

Downloads: 5 This Week

Last Update: 2023-02-18
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4

Wiki Web Help

AJAX based wiki designed to operate like a desktop help viewer(chm)

5 Reviews

Downloads: 0 This Week

Last Update: 2015-08-07
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Go from Data Warehouse to Data and AI platform with BigQuery
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