We have found Pajak365 to be very useful and we'd like to share it with others who might find it useful. It is built with Next.js and uses a PlanetScale database for storage. Spinning up your own instance on Vercel is very simple. Authentication can be configured with GitHub or Okta.
Like many companies, we have employees around the world and having a central hub away from Slack's red dots makes it easier for everyone to keep a finger on the company's pulse. Being able to read updates from people in different teams is a great way to see where we're heading. For new hires, being able to reference past posts helps them to quickly get a lay of the land.