Self-hostable, open-source alternatives — verified
One page per tool. Ranked by a live Self-Host Health Score from the GitHub API, with a deploy footprint column we verify against official docs — RAM, database, Raspberry-Pi/ARM support and one-click deploy. The data incumbents don't compute.
Database / spreadsheet
Airtable alternatives
4 options · top: NocoDB (99)
Docs / knowledge base
Notion alternatives
4 options · top: AppFlowy (99)
Internal tools / admin panels
Retool alternatives
4 options · top: Appsmith (98)
Automation / iPaaS
Zapier alternatives
3 options · top: n8n (100)
Scheduling
Calendly alternatives
2 options · top: Cal.com (100)
Kanban / project boards
Trello alternatives
3 options · top: WeKan (96)
Team chat
Slack alternatives
3 options · top: Rocket.Chat (100)
Wiki / knowledge base
Confluence alternatives
3 options · top: Outline (97)
API client
Postman alternatives
2 options · top: Hoppscotch (99)
Forms / surveys
Typeform alternatives
2 options · top: Formbricks (95)
PaaS / app hosting
Heroku alternatives
4 options · top: Coolify (99)
Auth / SSO / identity
Auth0 alternatives
3 options · top: Keycloak (99)
Observability / monitoring
Datadog alternatives
3 options · top: Uptime Kuma (100)
Helpdesk / support
Zendesk alternatives
3 options · top: Chatwoot (99)
Web analytics
Google Analytics alternatives
3 options · top: Umami (98)
E-signature
DocuSign alternatives
3 options · top: Documenso (95)
Password manager
1Password alternatives
3 options · top: Vaultwarden (98)
Screen recording
Loom alternatives
2 options · top: Cap (95)
Email marketing
Mailchimp alternatives
3 options · top: Listmonk (96)
Live chat / customer messaging
Intercom alternatives
3 options · top: Chatwoot (99)
Issue tracking / project management
Jira alternatives
4 options · top: Plane (99)
File storage / sync
Dropbox alternatives
3 options · top: Nextcloud (98)
Business intelligence / dashboards
Looker alternatives
3 options · top: Apache Superset (100)
Backend-as-a-service (BaaS)
Firebase alternatives
4 options · top: Supabase (100)
Search
Algolia alternatives
2 options · top: Meilisearch (98)
URL shortener
Bitly alternatives
3 options · top: YOURLS (94)
Video meetings
Zoom alternatives
2 options · top: Jitsi Meet (99)
Git hosting / code collaboration
GitHub alternatives
3 options · top: Gitea (99)
CI/CD
CircleCI alternatives
3 options · top: Drone (97)
CRM
Salesforce alternatives
4 options · top: Twenty (99)
Secrets management
Doppler alternatives
2 options · top: Infisical (96)
Feature flags
LaunchDarkly alternatives
3 options · top: Unleash (93)
Status page
Statuspage alternatives
3 options · top: Gatus (93)
Photo storage / management
Google Photos alternatives
3 options · top: Immich (99)
Note-taking
Evernote alternatives
3 options · top: Joplin (99)
Bookmarks / read-later
Pocket alternatives
3 options · top: Karakeep (95)
DNS / network ad-blocking
NextDNS alternatives
3 options · top: Pi-hole (98)
Backup
Backblaze alternatives
3 options · top: Duplicati (93)
Accounting / invoicing
QuickBooks alternatives
3 options · top: Firefly III (96)
ERP
SAP alternatives
3 options · top: ERPNext (99)
CMS / blog
WordPress.com alternatives
4 options · top: Ghost (100)
How the Self-Host Health Score works
A transparent 0–100 composite from a single GitHub fetch: activity (commit recency, 35), releases (latest-release recency, 25), maturity (stars, log-scaled, 25), adoption (forks, log-scaled, 15). Archived or unmaintained repos score 0. Refreshed daily.