Note: This is the first pass at a comparison table, using data provided by Mike McGirvin, the author of Friendika. He has the latest, up-to-date version of the comparison table at the bottom of the Friendika Project main page.

General Features

FriendikaFacebookTwitterGoogle+Status.NetDiaspora
"Like" something yes yes yes yes yes yes
"Dislike" something yes no no no no no
Birthday notifications yes Note
wrong timezone		 no ? no no
Events calendar yes yes no no no no
Selectable themes yes no yes no yes no
Multiple profiles yes no no no no no
Edit sent post yes no no yes no no
Sharing

FriendikaFacebookTwitterGoogle+Status.NetDiaspora
Share public posts yes yes yes yes yes yes
Share public photos yes yes ? yes yes yes
Share private posts yes Note
Not really private		 no Note
Not really private		 Note
limited		 yes
Share private photos yes Note
Not really private		 no Note
Not really private		 Note
limited		 Note
Not really private
Private conversation groups yes Note
Not really private		 no Note
Not really private		 ? yes
Send private messages (mail) yes Note
Not really private		 Note
Really private?		 Note
Not really private		 Note
limited		 yes
"Wall-to-wall" posting yes yes no no no no
Photo albums yes yes no yes no no
Compatibility

FriendikaFacebookTwitterGoogle+Status.NetDiaspora
View Friendika in stream yes yes yes no yes yes
View Facebook in stream yes yes ? no ? no
View Twitter in stream yes yes yes ? yes no
View Google+ in stream yes no no yes ? no
View Status.Net in stream yes yes yes ? yes no
View Diaspora in stream yes yes yes no ? yes
View blogs/RSS in stream yes no no no ? no
View email in stream yes Note
Not really private		 no no no no
Implementation

FriendikaFacebookTwitterGoogle+Status.NetDiaspora
Decentralised yes no no no yes yes
Runs on shared hosts yes no no no yes no
Extensibility via plugins yes yes yes ? yes no
External access API yes yes yes Note
limited		 yes Note
limited
Expire posts if desired yes no no no no no