OS4X https://validator.w3.org/feed/docs/rss2.html OS4X Core Release 2026-02-25 Release 2026-02-25 Release 2025-09-17 Release 2026-01-07 Release 2026-02-24 Release 2026-02-24 Release 2026-02-03 Umfrage zu Peppol-Unterstützung in OS4X Release 2026-03-16 Release 2026-01-07 Release 2026-02-03 Release 2026-01-08 Release 2025-10-01 Release 2025-12-16 Release 2026-01-08 Release 2025-12-16 OS4Xvirtual Release 2025-10-06 Release 2025-10-06 Release 2025-10-01 Release 2025-07-10 Release 2025-09-17 Release 2025-07-24 Release 2025-07-24 Release 2025-04-22 Release 2025-07-10 Release 2025-07-03 Release 2025-07-03 Release 2025-04-22 Release 2025-03-27 Release 2025-03-27 Release 2025-02-18 Release 2025-01-27 Release 2025-01-27 Release 2025-01-20 Release 2026-03-16 Release 2024-11-27 Release 2025-03-10 Release 2025-01-07 Release 2025-01-20 Release 2025-01-07 Release 2025-03-10 Release 2024-11-27 Release 2025-02-18 Release 2024-11-18 Release 2024-11-18 Release 2024-11-14 Release 2024-11-14 Home