OSEM

Open Source Event Manager for free software conferences

About OSEM

OSEM, the Open Source Event Manager, helps conference organizers run events end to end. It supports calls for papers with submission, classification, evaluation and scheduling, creates splash pages and agendas for marketing, handles visitor registration and ticket sales, and provides analytics on how a program and audience evolve, making it suited to community and free software conferences that need full control over their event data.

OSEM website preview

Live preview of osem.io via the WordPress mShots service — it can take a few seconds to generate on a first visit.

OSEM: strengths & things to check

Strengths

Completely free to use — this directory lists no paid plan for it.
Covers event management, conferences, open source, call for papers — see the focus areas listed in its key facts.
Has 6 close alternatives in the same category on this page, so switching or comparing is easy.

Things to check

Free tools can change their model or shut down — avoid locking critical work into it without an export path.
Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
It is one of 2092 tools in the Productivity & Notes category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

OSEM pricing

Pricing model	Free — listed in this directory as a free tool, with no paid plan required to use it.
Free access	Yes — fully free
Current plan prices	Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official site	osem.io

OSEM key facts

Category: Productivity & Notes
Pricing: Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas: event management, conferences, open source, call for papers
Official site: osem.io

OSEM FAQ

How much does OSEM cost?

Free — listed in this directory as a free tool, with no paid plan required to use it. Current plans and prices are listed on the official site (osem.io).

What is OSEM used for?

Open Source Event Manager for free software conferences Its focus areas in the Productivity & Notes category: event management, conferences, open source, call for papers.

Where can I try OSEM?

On its official site, osem.io — the Visit Official Site button above goes straight there.

OSEM vs alternatives

	OSEM	Indico	pretalx	ActivityWatch
Pricing	Free — listed in this directory as a free tool, with no paid plan required to use it.	Free — listed in this directory as a free tool, with no paid plan required to use it.	Freemium — a free tier lets you start, and paid plans are available if you need more.	Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas	event management, conferences, open source, call for papers	events, conferences, open source, self hosted	conferences, events, cfp, scheduling, open source	time tracking, privacy, quantified self, open source
Official site	osem.io	getindico.io	pretalx.org	activitywatch.net
Directory status	Listed	Listed	Listed	Listed

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the Productivity & Notes category

Notes, tasks, and project tools that keep you organized and focused. The Productivity & Notes category on Tools Hub currently lists 2092 tools. Alongside OSEM, it includes Super Productivity, Wispr Flow, Gist AI, Bottle Rocket.

FreeProductivity & Notesevent-managementconferencesopen-sourcecall-for-papers

Alternatives to OSEM

Tools in the same Productivity & Notes category that share focus areas with OSEM — worth comparing before you commit:

Productivity & Notes

Indico

Feature-rich event management system built at CERN

Freeeventsconferencesopen-sourceself-hosted

Productivity & Notes

pretalx

Call for Papers and scheduling for conferences

Freemiumconferenceseventscfpscheduling

Productivity & Notes

ActivityWatch

Automatically track how you spend time on your devices, privately and free.

Freetime-trackingprivacyquantified-selfopen-source

Productivity & Notes

Admidio

Free membership management for organizations, clubs, and associations

Freemembershipself-hostedopen-sourceclubs

Productivity & Notes

AdventureLog

Travel log, trip planner, and world map in one app

Freetraveltrip-plannerself-hostedopen-source

Productivity & Notes

AFFiNE

Open-source workspace merging docs, canvas and tables

Freemiumnotesopen-sourcecanvasworkspace

More in Productivity & Notes

Comparing tools in the Productivity & Notes category? These related listings are worth a look: Super Productivity — Open-source deep work task manager with time tracking and timeboxing; Wispr Flow — Voice-to-text dictation and AI notetaker for every app; Gist AI — Free web, YouTube and PDF summarizer powered by ChatGPT.