feed aggregator for gemini supporting many formats and protocols
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Bump version to 1.8.2
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You can also use your local clone with git send-email.


comitium is currently looking for translations! See translating.md for info on how to help out!

comitium is a Gemini, Gopher, and HTTP feed aggregator that supports Atom, RSS, JSON, and Gemini feeds, as well as tracking page changes, which is output into a simple static Gemini document that you can put anywhere.

You can see a running instance in action at gemini://nytpu.com/feed.gmi.

#why another aggregator?

There are many Gemini aggregators out there, and yet not one does everything I want it to. I want an aggregator that:

  1. Works with Gemini and Gopher (and possibly http)
  2. Supports Atom, RSS, and Gemini feeds (and possibly JSON feeds)
  3. Can watch a page for changes
  4. Simple and easy setup & usage

All of the aggregators always have really cool and unique features, and yet all that I've found don't meet one or more of these basic (IMO) criterion. Hence, going and writing my own.

Also, it's nice if it doesn't tie me to a specific browser/service; i.e. trivially self-hostable, ideally as CGI or static pages that can use an existing server setup rather than needing vhosting and routes.


See comitium help for basic usage. For more detailed usage, see comitium(1).

To get up and running, see the quickstart/tutorial page.

#building & installing

#downloading binaries

You can download prebuilt binaries here



  • go (module-aware)
  • scdoc

Then do the standard:

$ git clone git://git.nytpu.com/comitium # you could also download a tarball
$ cd comitium
$ make
# make install

A note to packagers (yes, I'm ambitious aren't I?): make sure to build with make COMMIT=tarball, otherwise there will be an issue when building in a non–git-repo.


Send patches and issue reports to ~nytpu/public-inbox@lists.sr.ht or alex@nytpu.com


comitium took inspiration and small code snippets from:

  • Amfora — how to structure saving subscriptions to JSON and refreshing subscriptions with goroutines.
  • gemreader — simple Gemini feed parsing.

comitium gratefully makes use of the following libre libraries:

  • go-gemini for fetching Gemini resources.
  • go-gopher for fetching Gopher resources.
  • gofeed for parsing Atom, RSS, and JSON feeds.
  • pflag for parsing flags and arguments.
  • go-homedir for locating configuration directories.


comitium is Copyright © 2021-2023 nytpu.

comitium is licensed under the terms of the GNU Affero General Public License, version 3. For more information, see LICENSE or the GNU website

#pssst! what does comitium even mean?

Comitium means “gathering” or “assembly” in Latin. comitium gathers together stuff from all protocols into one centralized place. Blah blah blah, you get the picture.