Pleroma is a microblogging server software that can federate (= exchange messages with) other servers that support ActivityPub. What that means is that you can host a server for yourself or your friends and stay in control of your online identity, but still exchange messages with people on larger servers. Pleroma will federate with all servers that implement ActivityPub, like Friendica, GNU Social, Hubzilla, Mastodon, Misskey, Peertube, and Pixelfed.
Pleroma is written in Elixir and uses PostgresSQL for data storage. It's efficient enough to be ran on low-power devices like Raspberry Pi (though we wouldn't recommend storing the database on the internal SD card ;) but can scale well when ran on more powerful hardware (albeit only single-node for now).
For clients it supports the [Mastodon client API](https://docs.joinmastodon.org/api/guidelines/) with Pleroma extensions (see the API section on <https://docs-develop.pleroma.social>).
- [Client Applications for Pleroma](https://docs-develop.pleroma.social/backend/clients/)
## Installation
### OTP releases (Recommended)
If you are running Linux (glibc or musl) on x86/arm, the recommended way to install Pleroma is by using OTP releases. OTP releases are as close as you can get to binary releases with Erlang/Elixir. The release is self-contained, and provides everything needed to boot it. The installation instructions are available [here](https://docs-develop.pleroma.social/backend/installation/otp_en/).
### From Source
If your platform is not supported, or you just want to be able to edit the source code easily, you may install Pleroma from source.
Currently Pleroma is packaged for [YunoHost](https://yunohost.org). If you want to package Pleroma for any OS/Distros, we can guide you through the process on our [community channels](#community-channels). If you want to change default options in your Pleroma package, please **discuss it with us first**.
### Docker
While we don’t provide docker files, other people have written very good ones. Take a look at <https://github.com/angristan/docker-pleroma> or <https://glitch.sh/sn0w/pleroma-docker>.
### Raspberry Pi
Community maintained Raspberry Pi image that you can flash and run Pleroma on your Raspberry Pi. Available here <https://github.com/guysoft/PleromaPi>.
### Compilation Troubleshooting
If you ever encounter compilation issues during the updating of Pleroma, you can try these commands and see if they fix things:
- `mix deps.clean --all`
- `mix local.rebar`
- `mix local.hex`
- `rm -r _build`
If you are not developing Pleroma, it is better to use the OTP release, which comes with everything precompiled.
## Documentation
- Latest Released revision: <https://docs.pleroma.social>
* IRC: **#pleroma** and **#pleroma-dev** on libera.chat, webchat is available at <https://irc.pleroma.social>
* Matrix: [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) and [#pleroma-dev:libera.chat](https://matrix.to/#/#pleroma-dev:libera.chat)
assert other_user.ap_id not in activity.recipients
object = Object.normalize(activity, fetch: false)
assert object.data["content"] == "uguu<br/>uguuu"
end
test "it linkifies" do
author = insert(:user)
recipient = insert(:user)
other_user = insert(:user)
{:ok, activity} =
CommonAPI.post_chat_message(
author,
recipient,
"https://example.org is the site of @#{other_user.nickname} #2hu"
)
assert other_user.ap_id not in activity.recipients
object = Object.normalize(activity, fetch: false)
assert object.data["content"] ==
"<a href=\"https://example.org\" rel=\"ugc\">https://example.org</a> is the site of <span class=\"h-card\"><a class=\"u-url mention\" data-user=\"#{other_user.id}\" href=\"#{other_user.ap_id}\" rel=\"ugc\">@<span>#{other_user.nickname}</span></a></span> <a class=\"hashtag\" data-tag=\"2hu\" href=\"http://localhost:4001/tag/2hu\">#2hu</a>"
end
test "it posts a chat message" do
author = insert(:user)
recipient = insert(:user)
{:ok, activity} =
CommonAPI.post_chat_message(
author,
recipient,
"a test message <script>alert('uuu')</script> :firefox:"
)
assert activity.data["type"] == "Create"
assert activity.local
object = Object.normalize(activity, fetch: false)
assert object.data["type"] == "ChatMessage"
assert object.data["to"] == [recipient.ap_id]
assert object.data["content"] ==
"a test message <script>alert('uuu')</script> :firefox:"
"<p><a href=\"https://mobilizon.org/events/252d5816-00a3-4a89-a66f-15bf65c33e39\">Mobilizon Launching Party</a></p><p>Mobilizon is now federated! 🎉</p><p></p><p>You can view this event from other instances if they are subscribed to mobilizon.org, and soon directly from Mastodon and Pleroma. It is possible that you may see some comments from other instances, including Mastodon ones, just below.</p><p></p><p>With a Mobilizon account on an instance, you may <strong>participate</strong> at events from other instances and <strong>add comments</strong> on events.</p><p></p><p>Of course, it's still <u>a work in progress</u>: if reports made from an instance on events and comments can be federated, you can't block people right now, and moderators actions are rather limited, but this <strong>will definitely get fixed over time</strong> until first stable version next year.</p><p></p><p>Anyway, if you want to come up with some feedback, head over to our forum or - if you feel you have technical skills and are familiar with it - on our Gitlab repository.</p><p></p><p>Also, to people that want to set Mobilizon themselves even though we really don't advise to do that for now, we have a little documentation but it's quite the early days and you'll probably need some help. No worries, you can chat with us on our Forum or though our Matrix channel.</p><p></p><p>Check our website for more informations and follow us on Twitter or Mastodon.</p>"