• Both are PHP/MySQL apps
• Both are managed by a non-profit entity

• Elgg is focused on being a great social networking tool, while Tiki is a general purpose Wiki/CMS, which includes many social networking features.

Number of contributors who made changes to the project source code each month.

Number of commits made to the project source code each month.

• Zarafa uses ELGG

• TikiWiki vs Elgg
• Elgg