App | Surveillance & ads | Transparency | Control | Customisability | Features |
---|---|---|---|---|---|
Yes | Proprietary code and algorithms | Central control by company | API limited to uses authorised by company | Follow people ; Post notes, links, images ; Discussions | |
Yes | Proprietary code and algorithms | Central control by company | API limited to uses authorised by company | Follow people ; Post notes, links, images ; Discussions | |
Mastodon | No | Open source | Federated, by admins of each instance | API available. Changes/contributions need to be accepted by main developer(s), or the entire app can be forked | Follow people; Post notes, images |
Yes | Proprietary code and algorithms | Central control by company | API limited to uses authorised by company | Follow people ; Post and comment on photos | |
Pixelfed | No | Open source | Federated, by admins of each instance | API available. Changes/contributions need to be accepted by main developer(s), or the entire app can be forked | Follow people; Post and comment on photos, images |
Google Apps | Yes | Proprietary code and algorithms | Central control by company | API limited to uses authorised by company | A set number of apps and features |
Nextcloud | No | Open source | Self-hosted | APIs and extension ecosystem available. Extension changes/contributions need to be accepted by their developer(s), or they can be forked | A theoretically unlimited number of features |
Yes | Proprietary | Central servers run by Facebook | No | Chat ; Audio/video calls | |
Signal | No | Open source | Central servers run by non-profit | No | Chat ; Audio/video calls |