An activity pub implementing federated social network (like Mastodon): https://pleroma.social/
Has the advantage of being written in elixir and having very light server requirements vs Mastodon.
They just published their security audit (https://blog.bitwarden.com/bitwarden-completes-third-party-security-audit-c1cc81b6d33) which seems like as good a reason as any to bump this request back up.
"QuickChart is a service that generates images of charts from a URL. Because these charts are simple images, they are very easy to embed in non-dynamic environments such as email, SMS, chat rooms, and so on."
"ArchiveBox takes a list of website URLs you want to archive, and creates a local, static, browsable HTML clone of the content from those websites (it saves HTML, JS, media files, PDFs, images and more)."
Can import links from:
Can save these things for each site:
There's a Docker image, as well: https://github.com/pirate/ArchiveBox