flohmarkt

A free, federated marketplace for second-hand goods

Screenshot of the flohmarkt web interface showing a marketplace listing page

flohmarkt is a self-hostable, decentralised platform for buying and selling second-hand items. Each instance is run independently, but all instances are interconnected through ActivityPub — the same open protocol used by Mastodon, Pixelfed, and the wider Fediverse.

You can browse items from many instances at once, contact sellers directly, and follow listings that interest you, without creating a separate account for every site.

flohmarkt is available in many languages. You can help translate it into yours!

flohmarkt is used all over the place. You can make one for your town, your community, or even your animal rescue.

flohmarkt is free and open-source software licensed under the AGPL-3.0.

News from the Fediverse

grindhold 2026-03-14

today an important cornerstone towards implementing FEP-0837 in has been finished: i overhauled the backend of the currency system. Each currency now relies on a single global identifier in the form of an URL. We hope for most of these to be URLs to entities in the future but of course we did not compromise the ability to have free-form currencies. When a user creates a free-form currency, there will be a URL for that instance.

View on Fediverse
grindhold 2026-03-02

Anscheinend ist mittlerweile großgenug um seine erste eigene Phishingwelle zu bekommen. Die Betrüger scheinen es im deutschsprachigen Raum auf Kontodaten abgesehen zu haben.

1. Liebe User: Wenn euch jemand auf auffordert, zur Bestätigung eures Accounts Eure Konto-/Kreditkartendaten auf einer verlinkten Seite einzugeben, ist das ein Betrugsversuch. Seriöse Flohmarktadmins wollen sowas *NIE* von euch wissen.

2. Liebe Admins: Bitte updatet auf die eben erschienene 0.16.1.

Ein screenshot einer Phishingnachricht auf Flohmarkt. Die Angreifer versuchen, den Nutzer unter dem Vorwand, man müsse seinen Flohmarkt-Account bestätigen, dazu zu bringen auf einen externen Link zu klicken. Hinter diesem verbirgt dann ein Formular für die eingabe vertraulicher Bank- oder Kreditkartendaten. Die Angreifer geben sich als SupportTeam@flohmarkt.ween.de aus. Es gibt kein SupportTeam beim flohmarkt.ween.de
View on Fediverse
chewie 2026-02-11

I have managed to set up a instance, thanks to some project devs who fixed a bug that stopped me from configuring it properly 🥳

Thanks @grindhold and others for creating it ❤️

I have created one to play with for the (UK) and nearby areas.

If anyone wants an account, feel free to join at flohmarkt.gogreenit.net and read the rules :)

I need to add some other servers so you can see more items for sale, as I've only put 1 item of my own on there as of now.

View on Fediverse
grindhold 2026-02-04

today, the software has witnessed its first login via . A keycloak installation served as the identity provider. This marks the beginning of the end of our integrate-more-auth-backends saga!

a screenshot of the flohmarkt login screen that now features a "use keycloak" button
the default login view of keycloak
a username "harrypotter" and a password are entered
a screenshot of flohmarkt with opened user menu. the menu shows that the harrypotter-user from the former screenshot is now currently logged in.
View on Fediverse
Profpatsch 2025-12-19

admins: please enable the new FediAuth feature when updating to 0.14!

It’s benign and will allow users to log in via their existing Fediverse accounts, no extra password needed!

Also we’d like some feedback if possible!

I know there’s still things we could add or improve (like having open registrations being separate from whether accounts are active for example), but we need to know if you need them!

The Administration page of flohmarkt, with the new FediAuth section underneath the Username/Password section and an “enabled” checkbox
View on Fediverse
grindhold 2025-12-12

\o/ as promised we have released a new version of ten minutes ago. We're 50 minutes early :)

It's 0.14.0

I think it's our biggest release since 0.2.0 and we thank @nlnet and @NGIZero for making this possible.

As spoilered, the most important changes are Support for multiple authentication backends (username/password, ldap, fediauth) and an overhaul of the geographic concept behind flohmarkt.

Get it at codeberg.org/flohmarkt/flohmar .

View on Fediverse
grindhold 2025-12-05

The features we are most proud of are:

* We overthrew the geographical concept for an entirely new one.
* We offer you new ways to authenticate yourself than just username/password (Fediauth and LDAP)
* and much, much more…

Stay tuned :)

View on Fediverse
grindhold 2025-12-05

yeah! @Profpatsch @midzer and me have been hard at work to bring awesome new things to over the last two months and it's time to finally ship them to you in a new release.

we've gone into feature freeze and are stabilizing everything in order to bring version 0.14.0 to you at roughly 2025-12-12 20:00 UTC

we're going to celebrate in our jitsi (to be announced) after the release and you are free to stop by, talk with us about flohmarkt and random other stuff :)

B.Y.O.B.

View on Fediverse
midzer 2025-12-02

reduced the frontend to a pretty fair amount due more templating.

Current language distribution:

* Python 53.6%
* JavaScript 21.7%
* HTML 17.7%
* CSS 4.2%

Upcoming version will be exciting. Stay tuned :)

View on Fediverse
grindhold 2025-11-28

when creating an item in , i can now search for abu dhabi in both latin and arabic characters :)

the geofeature is nearly complete. a big thanks goes to @NGIZero for making this possible

View on Fediverse
neufeldt_kuhnke 2025-11-08

Hallo Benutzer von hanse.social

Es gibt regelmäßig den in der dass statt des € Symbols Eure in $ erscheinen.
Mit dem jüngsten haben wir den Dollar als weitere Währung hinzugefügt.
Auf diese Weise könnt Ihr Eure Angebote, die mit der falschen Währung sind:
Erst in Dollar umwandeln, speichern,
dann wieder in unmwandeln, speichern.
Danach sollte das Angebot in Euro stehen.
Oftmals reicht auch ein erneutes Speichern. Falls nicht: Siehe oben.

3 Angebote auf hanse.Social, davon eines in Dollar, die linken beiden in Euro.
View on Fediverse
adminforge 2025-11-01
View on Fediverse
me 2025-10-30

From the download counter on the release page at codeberg I estimated that there are between 30 and 40 instances out there running on .

(Who uses ZIP 😉 ? Well, the yunohost integration does and the counter went up by the numbers shortly after publishing the latest update to the yunohost app integration.)

On the wiki we have a list of ~20 flohmarkts. The list is meant for users to choose an instance and for admins to look for other flohmarkts to federate with.

I'd like to invite everybody to drop us a line to add your flohmarkt to the wiki: either as a codeberg issue or as a fedimessage or fedipost or on IRC.

And even if you'd not like to be on the wiki page: federate with others to make your small ads more visible.

enables that ​s show up on the other instances an instance is federated with directly. This gives every small ad some more reach.

My impression is that federation is extremly important to make the flohmarkts more successful as an alternative to the well know centralized services.

I opened an issue to discuss how to make federating easier without forcing anyone to share more data with the world than they do with the actual version of flohmarkt.

View on Fediverse
grindhold 2025-10-23

🥂 i can happily announce that the project has been selected for being supported by @nlnet !

@midzer @Profpatsch and myself will program a lot in the next few months and we hope to bring you everything we teasered in my talk at in berlin :)

PSA to flohmarkt admins: I know that some of you roll out master to systems with users. This is generally a bad idea and will be a much worse idea in the next few months. You have been warned 🙃

View on Fediverse
neufeldt_kuhnke 2025-10-19

Liebes ,
seit heute ist unsere Instanz
hanse.social
aktiv.
Aktuell neigt sie dazu sich nach einigen Stunden aufzuhängen, daher startet der Server Morgens um 03:00 Uhr neu.
Kann sein, dass wir weitere Reboots einbauen müssen.
Ein Kollege hatte angemerkt, wir sollten
folgen, was wir nun auch tun.

Störungsmeldungen zu unserer Instanz gerne hier.

Screenshot der Flohmarkt Instanz : hanse.social
Man sieht einen Untersetzer : Amsterdam
Diverse Lautsprecherstecker
Eine pinken Pfederkopf Gaderobe
Eine Canon Powershot A400 Digital Kamera
View on Fediverse
grindhold 2025-10-05

is over and i want to thank @berlinfediday and @tobias for inviting me and the opportunity to present !

i had many good conversations, many impulses have been set, i will take home more from the event than i dreamed of and that's awesome.

i loved the fact that there was always this certain static in the air - that "aufbruchstimmung" - that only happens when many people with aligning goals come together and forge plans for the future.

hopefully until next year!

View on Fediverse
sozialwelten 2025-10-04

- ​n im von @grindhold

Analog zum schwarzen Brett im Supermarkt: Ich habe etwas anzubieten / abzugeben, wer möchte das haben?

Auf einer Flohmarkt - gibt es Suchleisten, populäre Tags, Nutzendendverwaltung;

Admins können die Instanz mit kleinem Text vorstellen. Direkt darauf kommen die angebotenen Produkte / Inserate (mit Fotos).

Auf der Artikelseite sieht man direkt die Föderation: Das Angebot kann von anderen Instanzen kommen.

View on Fediverse
richardwonka 2025-07-15

Who's heard of - the software - before?

This is _nice_! A federated flea market / craigslist replacement that removes all the data hoarding eBay does, also with and none of the ads - anything you see is stuff you can get on the platform.

You can browse, haggle and buy stuff with your , , , ... account

Here:s to my local instance muc.deals - let's find loving homes for stuff. And hopefully not all of it in _my_ home.

View on Fediverse