Best open source software for SaaS companies

1

Supabase

Postgres development platform with auth, realtime, storage and edge functions, the open-source Firebase alternative.

Low-code & BackendDocker

111k

Supabase has 111,147 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 6,123 commits in the last year; it replaces Firebase.

2

Appwrite

End to end backend server for web, native, and mobile developers 🚀.

Low-code & BackendDocker

58k

Appwrite has 57,577 GitHub stars, uses the BSD-3-Clause license, ships a Docker image and had 10,376 commits in the last year; it replaces Firebase and Supabase.

3

PocketBase

Backend for your next SaaS and Mobile app in one file.

Low-code & BackendDocker

61k

PocketBase has 61,293 GitHub stars, uses the MIT license, ships a Docker image and had 500 commits in the last year; it replaces Firebase and Supabase.

4

Logto

Modern auth infrastructure with OIDC, SSO and multi-tenant support for SaaS and apps.

Identity & SSODocker

15k

Logto has 14,652 GitHub stars, uses the MPL-2.0 license, ships a Docker image and had 1,322 commits in the last year; it replaces Auth0.

5

ZITADEL

Identity infrastructure with SSO, passkeys, multi-tenancy and audit trails, built in Go.

Identity & SSODocker

15k

ZITADEL has 15,213 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 656 commits in the last year; it replaces Auth0 and Okta.

1

Lago

Metering and usage-based billing.

Accounting & InvoicingDocker

11k

Lago has 10,657 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 174 commits in the last year.

2

Kill Bill

Subscription billing & payments platform. Have access to real-time analytics and financial reports.

Accounting & InvoicingDocker

5.8k

Kill Bill has 5,783 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 201 commits in the last year.

3

HyperSwitch

Payment switch to make payments fast, reliable and affordable. Connect with multiple payment processors and route traffic effortlessly, all with a single API integration.

Finance & BudgetingDocker

45k

HyperSwitch has 45,286 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 2,103 commits in the last year.

1

PostHog

Product analytics, session recording, feature flagging and a/b testing that you can self-host (alternative to Mixpanel, Amplitude, Heap, HotJar, Optimizely).

Analytics

40k

AI-nativePostHog has 40,156 GitHub stars, uses the MIT license and had 35,167 commits in the last year; it replaces Google Analytics and Metabase Cloud.

2

Umami

Simple, fast, privacy-focused alternative to Google Analytics.

AnalyticsDocker

39k

Umami has 39,188 GitHub stars, uses the MIT license, ships a Docker image and had 1,087 commits in the last year; it replaces Google Analytics.

3

Plausible Analytics

Simple, lightweight (< 1 KB) and privacy-friendly web analytics.

Analytics

29k

Plausible Analytics has 29,323 GitHub stars, uses the AGPL-3.0 license and had 545 commits in the last year; it replaces Google Analytics.

1

Chatwoot

Customer communication platform (alternative to Intercom and Zendesk).

Team ChatDocker

38k

Chatwoot has 37,569 GitHub stars, uses the MIT license, ships a Docker image and had 1,379 commits in the last year; it replaces Zendesk and Intercom.

2

Novu

Notification infrastructure for developers.

Team ChatDocker

40k

Novu has 40,118 GitHub stars, uses the MIT license, ships a Docker image and had 2,234 commits in the last year; it replaces Twilio SendGrid.

3

Listmonk

High performance, self-hosted newsletter and mailing list manager with a modern dashboard.

Newsletters & Mailing ListsDocker

24k

Listmonk has 23,701 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 227 commits in the last year; it replaces Mailchimp and Twilio SendGrid.

1

Formbricks

Experience Management Suite built on the largest open source survey stack worldwide. Gracefully gather feedback at every step of the customer journey to know what your customers need.

Polls, Surveys & EventsDocker

13k

Formbricks has 13,065 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 1,403 commits in the last year; it replaces Typeform and Google Forms.

2

Fider

Open platform to collect and prioritize feedback (alternative to UserVoice).

Polls, Surveys & EventsDocker

4.6k

Fider has 4,558 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 467 commits in the last year.

1

Uptime Kuma

Easy-to-use self-hosted uptime monitor with status pages and 90+ notification channels.

Monitoring & Status PagesDocker

92k

Uptime Kuma has 92,149 GitHub stars, uses the MIT license, ships a Docker image and had 1,359 commits in the last year; it replaces Datadog and Uptime Robot.

2

OpenStatus

Open-source synthetic monitoring and status pages from multiple regions.

Monitoring & Status PagesDocker

9.2k

OpenStatus has 9,169 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 1,175 commits in the last year; it replaces Statuspage.

3

SigNoz

Open-source observability platform for logs, metrics and traces built on OpenTelemetry.

Monitoring & Status PagesDocker

32k

SigNoz has 32,287 GitHub stars, uses the MIT license, ships a Docker image and had 1,939 commits in the last year; it replaces Datadog and Grafana Cloud.

1

Coolify

Self-hostable Heroku, Netlify and Vercel alternative that deploys apps, databases and services to your servers.

Self-hosting PlatformsDocker

63k

Coolify has 62,628 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 4,939 commits in the last year; it replaces Heroku and Vercel.

2

Dokploy

Self-hostable PaaS to deploy apps and databases with Docker, Traefik and a clean dashboard.

Self-hosting PlatformsDocker

38k

Dokploy has 37,670 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 2,764 commits in the last year; it replaces Heroku and Vercel.