Prismo is an in development, open source, link sharing tool. It supports partial ActivityPub federation, microformats2, and webmentions . Prismo users can be followed by Prismo users and by other ActivityPub software users. Federation between different Prismo instances is still in development.
- Old Flagship Instance
- The original flagship instance suffered data loss and the lead dev decided to start a new instance on a different domain to avoid account hijacking. 
- New Flagship Instance
- 2019-01-06 added microformats2 support: 
- 2019-04-25 added webmentions support: