https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 16 May 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-05-16-open-source-workspace-suites-2026-nextcloud-owncloud-seafile-collabora-onlyoffice-cryptpad-etherpad-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-open-source-workspace-suites-2026-nextcloud-owncloud-seafile-collabora-onlyoffice-cryptpad-etherpad-deep-dive.en Google Workspace at 18 USD per seat per month. Microsoft 365 E3 at 36 USD. For 200 employees that crosses half a million a year, and the data lives in a US cloud. EU governments, Korean public agencies and Japanese municipalities are migrating to self-hosted stacks one after another in 2026. This is the honest, deep map — NextCloud Hub 10, ownCloud Infinite Scale, Seafile 12, Collabora Online, OnlyOffice 8, CryptPad, Etherpad, HedgeDoc, Outline, Wiki.js, Element/Matrix, Mattermost, Cal.com, Vaultwarden, Immich, Penpot, Authentik, Coolify — a workspace stack you can actually operate. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) nextcloudowncloudseafilecollabora-onlineonlyofficecryptpadetherpadlibreofficeself-hostedopen-sourceenglish https://www.youngju.dev/blog/culture/2026-05-16-open-source-workspace-suites-2026-nextcloud-owncloud-seafile-collabora-onlyoffice-cryptpad-etherpad-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-open-source-workspace-suites-2026-nextcloud-owncloud-seafile-collabora-onlyoffice-cryptpad-etherpad-deep-dive.ja Google Workspace は 1 人あたり月 18 ドル、Microsoft 365 E3 は 36 ドル。従業員 200 人で年間 5,000 万円。データは米国のクラウドに居る。EU 政府、韓国の公共機関、日本の自治体が次々とセルフホストへ移行する 2026 年。NextCloud Hub 10・ownCloud Infinite Scale・Seafile 12・Collabora Online・OnlyOffice 8・CryptPad・Etherpad・LibreOffice 25.2 まで、本当に運用可能なオープンソース ワークスペース スタックを一気にまとめる。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) nextcloudowncloudseafilecollabora-onlineonlyofficecryptpadetherpadlibreofficeself-hostedopen-source日本語 https://www.youngju.dev/blog/culture/2026-05-16-open-source-workspace-suites-2026-nextcloud-owncloud-seafile-collabora-onlyoffice-cryptpad-etherpad-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-open-source-workspace-suites-2026-nextcloud-owncloud-seafile-collabora-onlyoffice-cryptpad-etherpad-deep-dive Google Workspace 월 18달러, Microsoft 365 E3 월 36달러. 직원 200명이면 연 5억 원. 데이터는 미국 클라우드에 산다. EU 정부와 한국 공공기관, 일본 자치체가 줄줄이 셀프호스트로 갈아타는 2026년의 풍경을, NextCloud Hub 10·ownCloud Infinite Scale·Seafile 12·Collabora Online·OnlyOffice 8·CryptPad·Etherpad·LibreOffice 25.2까지 — 진짜 운영 가능한 오픈소스 워크스페이스 스택을 한 권으로 정리한다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) nextcloudowncloudseafilecollabora-onlineonlyofficecryptpadetherpadlibreofficeself-hostedopen-source