Developer conferences in Europe

#	Conference	Companies	New	Returning	Packages from
1	1. KubeCon + CloudNativeCon Europe Mar 15–18, 2027 · Barcelona, Spain	85companies			from$5,000 (currency not stated)
2	2. Nerdearla España Nov 3–5, 2027 · Madrid, Spain	72companies
3	3. phpday May 13–14, 2027 · Verona, Italy	50companies
4	4. Open Conf Nov 20–21, 2026 · Athens, Greece	47companies
5	5. DecompileD Conference Mar 11, 2027 · Dresden, Germany	37companies
6	6. J-Fall Nov 11–12, 2026 · Ede, Netherlands	31companies
7	7. INNO IT Jun 9, 2027 · Kiel, Germany	30companies
8	8. Devoxx France Apr 7–9, 2027 · Paris, France	29companies
9	9. JSWORLD Conference Mar 19, 2027 · Amsterdam, Netherlands	28companies
10	10. Agentic Engineering Days Zurich Nov 20, 2026 · Zurich, Switzerland	26companies
11	11. Cloud Native Denmark Nov 19–20, 2026 · Copenhagen, Denmark	26companies
12	12. Porto Tech Hub Conference Nov 10, 2026 · Porto, Portugal	23companies			fromEUR 300
13	13. Kubernetes Community Days (KCD) Suisse Romande Dec 9–10, 2026 · Meyrin, Switzerland	23companies
14	14. DevFest Toulouse Nov 19, 2026 · Labège, France	21companies
15	15. DevFest Dijon Dec 4, 2026 · Dijon, France	20companies
16	16. Riga TechWeek Aug 24–29, 2027 · Riga, Latvia	20companies
17	17. Devops REX Dec 9–10, 2026 · Paris, France	18companies
18	18. Fabric February Feb 2–4, 2027 · Oslo, Norway	17companies
19	19. reactjsday Nov 19, 2026 · Verona, Italy	17companies
20	20. Azure Bootcamp Switzerland Jun 10, 2027 · Bern, Switzerland	15companies
21	21. devNetNoord Nov 26, 2026 · Groningen, Netherlands	15companies
22	22. DevFest Lyon Dec 4, 2026 · Lyon, France	14companies
23	23. JavaLand Mar 2–4, 2027 · Rust, Germany	14companies
24	24. IT-Tage Dec 7–10, 2026 · Frankfurt, Germany	13companies
25	25. IT-Tage Dec 7–10, 2026 · Frankfurt, Germany	13companies
26	26. Agile Testing Days Nov 16–19, 2026 · Potsdam, Germany	11companies			fromEUR 700
27	27. DWX Developer World Jun 28–Jul 1, 2027 · Mannheim, Germany	11companies
28	28. Experts Live Denmark (ELDK) Feb 9–10, 2027 · København, Denmark	11companies
29	29. WPC Nov 24–26, 2026 · Milano, Italy	11companies
30	30. Kubernetes Community Days Provence Dec 10, 2026 · Aix-en-Provence, France	9companies
31	31. Nürnberg Digital Festival Jun 14–24, 2027 · Nuremberg, Germany	9companies
32	32. Software Architecture Gathering Nov 16–19, 2026 · Berlin, Germany	9companies
33	33. Visugxl Nov 17, 2026 · Sint-Katelijne-Waver, Belgium	9companies
34	34. JCON Europe Apr 26–29, 2027 · Cologne, Germany	8companies
35	35. React Summit May 21–25, 2027 · Amsterdam, Netherlands	8companies
36	36. Tech Show Paris Nov 18–19, 2026 · Paris, France	8companies
37	37. Cloud Tech Tallinn Feb 4–5, 2027 · Tallinn, Estonia	7companies			fromEUR 2,000
38	38. CodeRioja Feb 27, 2027 · Logroño, Spain	7companies
39	39. DDD Europe Jun 3–4, 2027 · Amsterdam, Netherlands	6companies
40	40. Uphill Conf Apr 29–30, 2027 · Bern, Switzerland	6companies
41	41. Craft Conference Jun 3–4, 2027 · Budapest, Hungary	5companies
42	42. Open Source Summit Europe Sep 20–22, 2027 · Glasgow, United Kingdom			0%returning	from$10,000 (currency not stated)
43	43. PowerShell Conference Europe Jun 21–24, 2027 · Wiesbaden, Germany				fromGBP 1,250
44	44. Linux Storage, Filesystem, Memory Management & BPF Summit Apr 27–29, 2027 · Porto, Portugal				from$3,000 (currency not stated)
45	45. Build Stuff Dec 2–4, 2026 · Vilnius, Lithuania				fromEUR 2,500

Companies: sponsors and exhibitors on each event’s current edition, read from its own directory, sponsor page or prospectus. New: not listed at the previous edition. Returning: share of the previous edition’s companies listed again.