Traffic Lag has been listed on here a while, but someone submitted some more information on the site.
Traffic Lag is a Greek message board created in 2008 and has been active since. It was redesigned recently and now only has 1 board /b/. The site has a cult userbase in Greece, but the site seems to convert to English well with google translate.
Frenschan was made for users of 4chan that have become fed up with the excessive amounts of degeneracy plaguing /b/ and /pol/. Fren Chan is a cozy place to post anonymously and a safe haven for free speech.
28chan is a simple imageboard where anyone can post comments and share images. There are boards dedicated to a variety of topics and users do not need to register an account before participating. Be sure to read the Rules before posting.
Kissu hosts a regularly archived happening thread running from 2019 to present. Said thread sometimes shows up when people want to document significant imageboard events. https://kissu.moe/qa/thread/4165. One such instance that might be of interest is https://www.reddit.com/r/guro/comments/lmh7dj/update_on_gurochan_drama_and_kuz/, although take the reddit post with a grain of salt, the guy is known to create drama about himself for some reason. Site discusses otaku culture, imageboard meta and technology. Sharing images and video links in various threads. Also casual discussion. When discussing real world events we try to stay as close to documenting them as possible.
Kissu was created in 2018 from otaku and meta posters who left 4chan’s /qa/ board.
Krautchan is a primarily German-language imageboard that was founded in 2007. I think I had avoided adding it in the past because it was not in English, but it seems that it is fine to browse in English now. Unlike most imageboards, posters on Krautchan didn’t publish their postings under the generic name “Anonymous”. The German name “Bernd” was used instead, and the Krautchan community identified themselves as “Bernds” instead of “Anons”.
Lainchan is a vichan based image board with several unique features. I will post in a piece of the FAQ below. A couple unique things I noticed were that the /random/ page is a collection of random threads from the whole site vs. a dedicated /b/ board. The faq also mentions a built in language enhancer, and posting without a name you are given a random name.