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Information aggregated automatically. Verify all dates, locations, and pricing on the official conference website before making arrangements.
Open Source Summit Europe is the Linux Foundation's flagship European gathering for the open source ecosystem, co-located with Embedded Linux Conference Europe. The 2026 edition marks 35 years of Linux and spans 11 tracks including Cloud & Orchestration, Linux, Open AI + Data, Digital Trust and safety-critical software. Keynotes include a featured conversation with Linux and Git creator Linus Torvalds.
Open Source Summit Europe 2026 takes place October 7–9, 2026 in Prague, Czechia.
Open Source Summit Europe 2026 is an in-person event.
Travel questions? See Good to know in the travel guide below.
Early October drops Prague into its best stretch of the year: crisp mornings, gold along the Vltava embankments, and the summer crowds finally thinned out. Open Source Summit Europe brings several thousand maintainers and kernel contributors into a city that stays walkable end to end, where a hallway conversation can continue over Czech lager for the price of a coffee elsewhere in Europe. Pack a warm layer for the evenings.
Vaclav Havel Airport (PRG) sits west of the centre with no direct rail link. Bus 119 runs to Nadrazi Veleslavin, then metro line A into town, roughly 35-45 minutes total; the Airport Express coach goes straight to the main train station. Taxis and rideshare take 25-40 minutes depending on traffic. Prague's three metro lines plus trams cover everything else, and one ticket type spans all of them.
Skip the taxi queue — pre-book a fixed-price airport transfer with Welcome Pickups. Exploring beyond the city? compare rental cars on Auto Europe.
Czech networks give solid 4G and 5G across the city centre and the metro, though roaming from outside the EU can get expensive fast. A travel eSIM loaded before you land keeps you online from the airport bus onward. Set up an eSIM with Airalo before you board and you're online the moment you land.
Prague Castle grounds. The largest ancient castle complex in the world, on the hill above Mala Strana. The outer courtyards are free to walk; the paid circuit covers St Vitus Cathedral and Golden Lane. Arrive before 09:00 or after 15:00 to dodge tour groups, and budget two to three hours for the full loop downhill. Tickets on Tiqets →
Vysehrad fortress. The other castle, and the one locals actually go to. A calm hilltop park south of the centre with ramparts, a neo-Gothic basilica and the cemetery where Dvorak is buried. Free to enter, rarely crowded, and the river views at sunset beat anything near the Charles Bridge. Allow ninety minutes.
Charles Bridge at dawn. By ten in the morning the bridge is shoulder to shoulder. Walk it around sunrise instead and you get the baroque statues, the mist off the Vltava and the castle silhouette almost to yourself. Ten minutes to cross, longer if you stop, and it pairs naturally with breakfast in Mala Strana afterwards.
Letna Park beer garden. A terrace above the river bend north of the Old Town, reached by a stair climb that earns the view. Open-air tables, cheap draught, and a panorama across all the bridges at once. October afternoons are often still warm enough to sit outside, and it is a short tram ride from most of the centre.
Does Czechia use the euro?
No, the currency is the Czech koruna (CZK). Cards are accepted almost everywhere, but avoid the street exchange booths in tourist areas, which offer poor rates.
What is the weather like in early October?
Expect daytime highs around 13-17C dropping to single digits after dark, with a real chance of rain. A waterproof jacket and a warm layer cover it.
Do I need a car?
No. Prague's metro, tram and bus network reaches everything, and the historic centre is best covered on foot. Driving and parking in the old city are actively unpleasant.
Travel notes written for Open Source Summit Europe 2026 attendees. Links marked above are affiliate links — we may earn a commission at no cost to you. Verify schedules and opening hours on official websites before you travel.
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