Guides tagged “slack”
16 guides
Open Source Alternative to Slack 2026
Mattermost is the best open source alternative to Slack in 2026. Self-hosted team chat, MIT license, no per-seat fees — replaces Slack Pro at $8.75/user/month.
·OSSAlt Team
Self-Host Mattermost vs Slack 2026
Self-host Mattermost vs Slack in 2026: cost per seat, admin features, and migration steps compared. Mattermost saves $12/user/month for 20+ person teams.
·OSSAlt Team
How to Self-Host Matrix + Element 2026
Self-host Matrix with Synapse or Conduit as a Slack alternative in 2026. Federated, end-to-end encrypted team messaging with bridges to Slack, Discord, and.
·OSSAlt Team
Self-Host Mattermost: Open Source Slack for Teams 2026
Self-host Mattermost as a Slack alternative for teams in 2026. MIT license, ~30K stars — channels, threads, integrations, bots, slash commands for 2026.
·OSSAlt Team
Self-Host Mattermost: Team Chat Slack Alternative 2026
Self-host Mattermost in 2026. MIT license, ~31K stars, Go — Slack alternative with channels, threads, slash commands, webhooks. Docker setup, mobile apps.
·OSSAlt Team
How to Self-Host Rocket.Chat 2026
Self-host Rocket.Chat for enterprise team messaging in 2026. MIT license, ~39K stars — channels, omnichannel (live chat, email), marketplace, federation.
·OSSAlt Team
Self-Host Rocket.Chat for Omnichannel Messaging 2026
Self-host Rocket.Chat in 2026. MIT license, ~40K stars, TypeScript — Slack alternative with omnichannel (email, live chat, WhatsApp), federation, video.
·OSSAlt Team
How to Self-Host Zulip Team Chat 2026
Self-host Zulip in 2026. Apache 2.0, ~22K stars, Python — topic-threaded team chat Slack alternative. Stream + topic model eliminates notification chaos.
·OSSAlt Team
Best Open Source Alternatives to Slack in 2026
Slack costs $8.75-17.50/user/month. These open source alternatives offer self-hosted team chat with full data ownership and no per-seat fees for 2026.
·OSSAlt Team
Best Open Source Team Communication Tools in 2026
Mattermost, Rocket.Chat, Element, and Jitsi: open source team communication tools in 2026 — self-hosted Slack and Zoom alternatives Free options covered.
·OSSAlt Team
Element vs Mattermost in 2026: Which Self-Hosted Chat?
Element (Matrix) vs Mattermost 2026: compare open source Slack alternatives on encryption, federation, DevOps integrations, and self-hosting requirements.
·OSSAlt Team
Element vs Rocket.Chat vs Mattermost 2026
Element vs Rocket.Chat vs Mattermost 2026: compare three open source Slack alternatives on encryption, omnichannel, DevOps integrations, and self-hosting.
·OSSAlt Team
How Much Does Slack Cost? Slack vs Mattermost 2026
Break down Slack's real costs — per-seat pricing, message limits, storage fees, and hidden costs. See how Mattermost self-hosted compares Updated for 2026.
·OSSAlt Team
Migrate Slack to Mattermost: 2026 Guide
Step-by-step guide to migrating your team from Slack to Mattermost — export data, import channels, set up integrations, and onboard your team in 2026.
·OSSAlt Team
How to Self-Host Huly in 2026: Docker Setup
Huly is an all-in-one project management platform (Linear + Notion + Slack in one tool) with 25K+ stars. This guide covers complete self-hosting setup.
·OSSAlt Team
Mattermost vs Rocket.Chat: Self-Hosted Team Chat 2026
Mattermost vs Rocket.Chat (2026): features, deployment, and performance compared — the two leading open source Slack alternatives. Which to choose Updated.
·OSSAlt Team
All Tags
2026 (366)self-hosting (266)open-source (256)docker (206)self-hosted (183)alternatives (99)comparison (88)guide (57)migration (46)privacy (37)monitoring (33)analytics (28)devops (24)project-management (24)automation (16)slack (16)crm (15)n8n (15)security (15)cost-analysis (14)plausible (14)paas (13)saas (13)ai (12)gitea (12)google-analytics (12)team-chat (12)wiki (12)zapier (12)authentication (11)ci-cd (11)community (11)open (11)plane (11)backend (10)coolify (10)customer-support (10)database (10)email (10)mattermost (10)migrate (10)no-code (10)notion (10)ollama (10)outline (10)source (10)developer-tools (9)gdpr (9)homelab (9)knowledge-base (9)llm (9)nextcloud (9)observability (9)authentik (8)billing (8)forgejo (8)git (8)grafana (8)linear (8)listmonk (8)newsletter (8)password-manager (8)scheduling (8)self-host (8)workflows (8)backup (7)bitwarden (7)bookmarks (7)chatwoot (7)collaboration (7)deployment (7)github (7)immich (7)keycloak (7)search (7)twenty (7)umami (7)uptime-kuma (7)vercel (7)ai-agents (6)baas (6)business-intelligence (6)cloud-storage (6)design (6)email-marketing (6)error-tracking (6)firebase (6)google-photos (6)heroku (6)industry (6)jira (6)kanban (6)licensing (6)matomo (6)networking (6)rss (6)self (6)sso (6)status-page (6)supabase (6)url-shortener (6)vaultwarden (6)wireguard (6)airtable (5)algolia (5)appflowy (5)business (5)calendly (5)cms (5)compliance (5)confluence (5)cursor (5)dashboard (5)dify (5)e-commerce (5)feed-reader (5)hosted (5)identity (5)linkwarden (5)media-server (5)meilisearch (5)openproject (5)penpot (5)photos (5)productivity (5)salesforce (5)sentry (5)setup-guide (5)startup (5)surveys (5)trello (5)uptime (5)video-conferencing (5)workflow-automation (5)zoom (5)ai-coding (4)api-testing (4)auth0 (4)bookstack (4)budgeting (4)business-model (4)continue-dev (4)docmost (4)docusign (4)dokku (4)dropbox (4)dub (4)e-signature (4)element (4)encryption (4)figma (4)file-sync (4)finance (4)formbricks (4)forms (4)glitchtip (4)google-drive (4)headless-cms (4)help-desk (4)infrastructure (4)internal-tools (4)invoicing (4)jellyfin (4)jitsi (4)live-chat (4)logto (4)low-code (4)mailchimp (4)mautic (4)medusa (4)metabase (4)open-webui (4)personal-finance (4)photo-management (4)plex (4)pocket (4)pocketbase (4)postal (4)postman (4)prometheus (4)rag (4)read-later (4)reverse-proxy (4)streaming (4)tabby (4)typesense (4)vpn (4)wekan (4)whiteboard (4)activepieces (3)airtable-alternative (3)appsmith (3)appwrite (3)caddy (3)cal-com (3)caprover (3)code-completion (3)container-management (3)datadog (3)discourse (3)dockge (3)docsend (3)documenso (3)documentation (3)dokploy (3)doodle (3)enterprise (3)espocrm (3)excalidraw (3)focalboard (3)forum (3)hashicorp-vault (3)headscale (3)hoarder (3)hoppscotch (3)hubspot (3)hubspot-alternative (3)huly (3)identity-provider (3)infisical (3)intercom (3)kubernetes (3)link-management (3)local-llm (3)loki (3)marketing (3)matrix (3)meal-planning (3)messaging (3)metrics (3)miniflux (3)minio (3)netdata (3)nginx (3)nocodb (3)oauth2 (3)payments (3)portainer (3)postgres (3)pricing (3)product-analytics (3)rallly (3)recipes (3)rocket-chat (3)secrets-management (3)shopify (3)smtp (3)stack (3)stirling-pdf (3)stripe (3)superset (3)tailscale (3)traefik (3)trends (3)typebot (3)typeform (3)ui-design (3)vps (3)wallabag (3)website-builder (3)windmill (3)zendesk (3)zero-trust (3)1password (2)accounting (2)actions (2)actual-budget (2)ad-blocker (2)adguard-home (2)affine (2)agpl (2)ai-search (2)aider (2)arm (2)asana (2)auth (2)authelia (2)background-jobs (2)baserow (2)bigbluebutton (2)bitly (2)blog (2)bruno (2)budibase (2)caldav (2)calendar (2)canva (2)carddav (2)case-study (2)changedetection (2)chatgpt (2)cloudflare-tunnels (2)code-editor (2)coding (2)comics (2)containers (2)contributing (2)copilot (2)cost (2)cost-savings (2)crowdsec (2)devrel (2)diagramming (2)dns (2)document-management (2)document-sharing (2)drone (2)email-server (2)epub (2)erp (2)erpnext (2)eu (2)evaluation (2)fediverse (2)feedly (2)flarum (2)flowise (2)freescout (2)freshrss (2)garage (2)ghost (2)gitlab (2)google-workspace (2)governance (2)grist (2)hetzner (2)home-assistant (2)hosting (2)ids (2)imap (2)incident-management (2)ips (2)issue-tracker (2)issue-tracking (2)kill-bill (2)knowledge-management (2)lago (2)langflow (2)leantime (2)linear-alternative (2)linux (2)logging (2)mailcow (2)mailgun (2)make (2)manga (2)microsoft (2)music (2)mysql (2)navidrome (2)nextjs (2)nodejs (2)note-taking (2)notifications (2)object-storage (2)ocr (2)oidc (2)omnichannel (2)open-core (2)openstatus (2)orchestration (2)paperless-ngx (2)papermark (2)passwords (2)pdf (2)perplexica (2)photoprism (2)pipedrive (2)pipelines (2)planka (2)posthog (2)power-bi (2)push (2)ranking (2)raspberry-pi (2)rclone (2)restic (2)retool (2)roi (2)roundup (2)s3 (2)seafile (2)searxng (2)seaweedfs (2)server (2)shlink (2)siem (2)social-media (2)source-available (2)splunk (2)spotify (2)spreadsheet (2)stable-diffusion (2)stalwart (2)subscriptions (2)substack (2)sustainability (2)synapse (2)syncthing (2)tandoor (2)team-messaging (2)tldraw (2)tools (2)transactional-email (2)transcoding (2)trigger-dev (2)webflow (2)wiki-js (2)windsurf (2)woodpecker (2)wordpress (2)workflow (2)ynab (2)zammad (2)zitadel (2)2fa (1)ab-testing (1)admin-panel (1)adobe (1)adobe-acrobat (1)agile (1)ai-assistant (1)ai-chat (1)ai-code-editor (1)ai-editor (1)ai-ide (1)ai-image-generation (1)ai-platform (1)ai-stack (1)ai-workflow (1)airflow (1)alerting (1)alertmanager (1)alerts (1)amplitude (1)ansible (1)apache (1)apm (1)app (1)archiving (1)article-archiver (1)asset-management (1)async-video (1)atlassian (1)audible (1)audiobooks (1)audiobookshelf (1)audit (1)authorization (1)autogen (1)automatisch (1)aws-s3 (1)axios (1)baikal (1)best-practices (1)beszel (1)better-stack (1)biome (1)bitbucket (1)blender (1)blocky (1)blogging (1)booking (1)botpress (1)break-even (1)cache (1)calcom (1)calibre (1)calibre-web (1)career (1)cax (1)ccpa (1)cdn (1)cdp (1)cerbos (1)chatbot (1)clerk (1)clickup (1)client-portal (1)cline (1)cloud (1)cloudinary (1)coder (1)coding-stats (1)collabora (1)com (1)comfyui (1)commerce (1)communications (1)community-chat (1)compare (1)compatible (1)compose (1)conduit (1)contentful (1)contentful-alternative (1)conversational-ai (1)creative-cloud (1)creators (1)crewai (1)crisp (1)cron (1)crowd-dev (1)cryptpad (1)cursor-alternative (1)dagster (1)dashy (1)data-engineering (1)data-pipeline (1)data-platform (1)data-sovereignty (1)data-visualization (1)daytona (1)decision-framework (1)deepseek (1)deliverability (1)design-tools (1)dev-environment (1)developer (1)developer-relations (1)devpod (1)digital-agency (1)digital-library (1)digitalocean (1)directory (1)directus (1)disaster-recovery (1)discord (1)docker-compose (1)docker-swarm (1)document-signing (1)docuseal (1)doppler (1)dozzle (1)duplicati (1)ebooks (1)elasticsearch (1)email-testing (1)emby (1)encrypted-storage (1)end-to-end-encryption (1)erxes (1)esignature (1)eslint (1)event-tracking (1)evernote (1)fail2ban (1)feature-flags (1)feature-management (1)federation (1)fetch (1)figma-alternative (1)files (1)firebase-alternative (1)firefly-iii (1)firezone (1)flux (1)form-builder (1)formatting (1)foundations (1)frappe (1)freelancer (1)freshdesk (1)frp (1)funding (1)gateway (1)ghostfolio (1)gimp (1)git-hosting (1)github-actions (1)github-alternative (1)github-codespaces-alternative (1)github-copilot (1)github-projects (1)gitness (1)glances (1)glpi (1)google-drive-alternative (1)google-photos-alternative (1)google-workspace-alternative (1)gotify (1)government (1)gpu (1)grammar-checker (1)grammarly (1)graphic-design (1)grocy (1)hardening (1)hardware (1)harness (1)headless (1)headless-commerce (1)healthcare (1)healthchecks (1)heatmaps (1)hedgedoc (1)help-scout (1)helpdesk (1)helpscout (1)heroku-alternative (1)heyform (1)highlight (1)highlight-io (1)homarr (1)home (1)home-inventory (1)homebox (1)homepage (1)hotjar (1)household (1)http-client (1)ilovepdf (1)image-editing (1)image-generation (1)images (1)inbucket (1)indie-hacker (1)infrastructure-as-code (1)inkscape (1)insomnia (1)instapaper (1)integromat (1)intercom-alternative (1)inventory (1)investing (1)iot (1)ipfs (1)it-tools (1)itam (1)itsm (1)jan (1)jira-alternative (1)jmap (1)joplin (1)k8s (1)kanboard (1)karakeep (1)kavita (1)keila (1)kestra (1)kindle (1)komga (1)komodo (1)kong (1)kratos (1)krita (1)kutt (1)langchain (1)langgraph (1)launch (1)launchdarkly (1)legal (1)lemonsqueezy (1)librechat (1)libreoffice (1)librephotos (1)limesurvey (1)linkace (1)linkding (1)linode (1)linting (1)litestream (1)live-streaming (1)llamaindex (1)llmops (1)lm-studio (1)local-ai (1)localai (1)log-management (1)logs (1)loom (1)mail-in-a-box (1)mailgun-alternative (1)mailhog (1)mailpit (1)mailu (1)maintainer (1)maintainers (1)managed-hosting (1)mariadb (1)markdown (1)marketing-automation (1)mastodon (1)mealie (1)media (1)meeting-polls (1)memory (1)memos (1)mesh-vpn (1)metered-billing (1)microblog (1)microsoft-teams (1)midjourney (1)miro (1)mit (1)mixpanel (1)mobile-backup (1)moderation (1)monday (1)monday-com (1)monica (1)mox (1)n8n-alternative (1)neon (1)netbird (1)netlify (1)netsuite (1)network-security (1)new-relic (1)nodebb (1)nonprofits (1)notes (1)notesnook (1)notion-ai (1)ntfy (1)nutrition (1)obs (1)obsidian (1)odoo-alternative (1)office (1)on-call (1)one (1)one-click (1)onedev (1)onlyoffice (1)opds (1)open-source-alternatives (1)openbao (1)openclaw (1)opencom (1)openfga (1)opensearch (1)opensign (1)opentelemetry (1)opentofu (1)openvpn (1)orbit (1)organization (1)ory (1)oso (1)ospo (1)owncast (1)pagerduty (1)pangolin (1)papercups (1)passbolt (1)passkeys (1)pastebin (1)payload-cms (1)pdf-tools (1)peergos (1)performance (1)perplexity (1)perplexity-alternative (1)personal-crm (1)pgbackrest (1)pi-hole (1)pkm (1)planetscale (1)pocket-alternative (1)podcasts (1)polls (1)popular (1)portfolio (1)postgresql (1)postiz (1)postman-alternative (1)prefect (1)prettier (1)price-tracking (1)private-notes (1)privatebin (1)protect (1)prototyping (1)proxmox (1)pusher (1)quickbooks (1)qwen (1)radicale (1)rathole (1)real-time (1)redash (1)redis (1)regulation (1)relationships (1)remote-work (1)renaissance (1)resend (1)retool-alternative (1)rocketchat (1)roundcube (1)rust (1)rybbit (1)saas-alternatives (1)saas-replacement (1)saleor (1)salesforce-alternative (1)sap (1)sap-alternative (1)sbom (1)schools (1)screen-recording (1)search-engine (1)segment (1)self-hosted-git (1)semaphore (1)sendgrid (1)sendgrid-alternative (1)session-replay (1)shiori (1)signoz (1)small-business (1)smart-home (1)smb (1)sms (1)snikket (1)snipe-it (1)sovereignty (1)sqlite (1)ssl (1)standard-notes (1)state-of (1)statuspage (1)strapi (1)stripe-alternative (1)stripe-billing (1)subsonic (1)suitecrm (1)supply-chain (1)suricata (1)surveymonkey (1)system (1)tableau (1)taiga (1)tailscale-alternative (1)task-management (1)tasks (1)teable (1)team (1)team-collaboration (1)templates (1)terraform (1)time-tracking (1)tls (1)todo (1)toggl (1)tooljet (1)toolkit (1)twenty-crm (1)twilio (1)twitter-alternative (1)tyk (1)typeform-alternative (1)unkey (1)uptime-monitoring (1)user-behavior (1)user-tracking (1)utilities (1)ux-analytics (1)valkey (1)vault (1)vector-database (1)vendor-lock-in (1)vikunja (1)void (1)void-editor (1)vs-code (1)wakapi (1)wakatime (1)wal-g (1)wazuh (1)web-monitoring (1)web-scraping (1)webauthn (1)webmail (1)websocket (1)websockets (1)webstudio (1)whimsical (1)wix (1)woodpecker-ci (1)workflow-orchestration (1)writing (1)xmpp (1)zapier-alternative (1)zed (1)zoho (1)zulip (1)