Share information and collaborate.

Nextcloud

Private team cloud — files, calendars, contacts and collaboration on your own infrastructure.

Mattermost

Secure, self-hosted team messaging — the sovereign alternative to Slack and Teams.

Rocket.Chat

Real-time team messaging you host yourself — team chat and customer live chat in one server.

Chatwoot

Self-hosted customer support hub — live chat, email, WhatsApp and social media in one open-source inbox.

Wiki.js

A modern knowledge base — structured documentation, full-text search and fine-grained access control.

Docmost

Self-hosted team wiki with real-time collaboration — open-source Notion and Confluence alternative.

Immich

Self-hosted photo and video backup — a private, full-featured Google Photos alternative with native mobile apps, running on infrastructure you own.

Stirling PDF

Every PDF operation you'll ever need — private, self-hosted, on your VPS.

DocuSeal

Free DocuSign alternative — self-hosted e-signature, full control, zero per-signature cost.

Memos

Lightweight self-hosted notes — capture ideas, run a daily log or share with your team. 20 MB image, 128 MB RAM.

Open-source task manager with Kanban, Gantt and sprints — self-hosted on your VPS, AGPL-3.0, 24 k+ stars, v2.4.0.

Self-hosted GED — OCR, auto-tagging and full-text search for all your documents. AGPL-3.0, 43 k+ stars, Django + PostgreSQL + Redis.

The open-source Figma alternative — design, prototype and live CSS on your own VPS.

Self-hosted multi-user RSS/Atom reader — follow unlimited feeds, sync any mobile client via Google Reader API, refresh on your schedule. SQLite, single container.

Self-hosted Calendly alternative — booking pages under your domain, unlimited event types, calendar sync and webhook API. One compose file, no per-seat fees.

Matrix (Synapse)

Federated, end-to-end encrypted messaging — your own domain, your own server.

Open-source resume builder, self-hosted on your VPS — MIT, 38 k+ stars, v5.2.5. PDF export fully client-side, no Chromium needed.

Keep your devices in sync without trusting anyone else with your files.

Minimalist open-source project manager with Kanban and GitHub integrations — self-hosted on your VPS, MIT, 7.9 k+ stars.

Self-hosted collaborative bookmark manager for teams — shared collections, per-member permissions, local web archiving. AGPL-3.0, ~9k stars.

Self-host your recipe manager — import from any URL, plan meals and generate shopping lists.

Private file sync for teams — faster and lighter than Nextcloud.

Your personal media library on your own VPS — no subscription, no data leakage.