Best open source software for startups

1

Twenty

A modern CRM offering the flexibility of open source, advanced features, and a sleek design.

CRMDocker

60k

Stands out for the most commits in the last 12 months (9,000). Twenty has 59,965 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 9,000 commits in the last year; it replaces Salesforce and HubSpot.

2

Krayin

CRM solution for SMEs and Enterprises for complete customer lifecycle management.

CRMDocker

24k

Stands out for a permissive MIT license. Krayin has 24,071 GitHub stars, uses the MIT license, ships a Docker image and had 535 commits in the last year; it replaces Salesforce and HubSpot.

1

Gitea

Git with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD.

Project ManagementDocker

59k

Stands out for an appsgit step-by-step deploy guide. Gitea has 58,738 GitHub stars, uses the MIT license, ships a Docker image and had 1,909 commits in the last year; it replaces GitHub and GitLab.

2

Plane

Track issues, epics, and product roadmaps in the simplest way possible (alternative to JIRA, Linear and Height).

Project ManagementDocker

62k

Stands out for the most GitHub stars. Plane has 61,588 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 771 commits in the last year; it replaces Jira and Asana.

1

Rocket.Chat

Communications platform that puts data protection first (alternative to Gitter.im and Slack).

Team ChatDocker

46k

Stands out for the longest track record (since 2015). Rocket.Chat has 46,344 GitHub stars, uses the MIT license, ships a Docker image and had 2,486 commits in the last year; it replaces Slack and Discord.

2

Novu

Notification infrastructure for developers.

Team ChatDocker

40k

Novu has 40,214 GitHub stars, uses the MIT license, ships a Docker image and had 2,467 commits in the last year.

1

SiYuan

A privacy-first personal knowledge management software, written in typescript and golang.

Wikis & Knowledge BasesDocker

47k

AI-nativeSiYuan has 46,973 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 10,161 commits in the last year.

2

BookStack

Simple, self-hosted, easy-to-use platform for organising and storing information.

Wikis & Knowledge BasesDocker

19k

BookStack has 19,111 GitHub stars, uses the MIT license, ships a Docker image and had 432 commits in the last year; it replaces Confluence.

1

Umami

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

AnalyticsDocker

40k

Umami has 39,742 GitHub stars, uses the MIT license, ships a Docker image and had 1,417 commits in the last year; it replaces Google Analytics.

2

Metabase

Easy way for everyone in your company to ask questions and learn from data.

AnalyticsDocker

50k

Metabase has 49,881 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 7,206 commits in the last year; it replaces Metabase Cloud and Tableau.

1

Supabase

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

Low-code & BackendDocker

114k

Supabase has 114,226 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 6,324 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 57,786 GitHub stars, uses the BSD-3-Clause license, ships a Docker image and had 21,189 commits in the last year; it replaces Firebase and Supabase.

1

FreeScout

Email-based customer support application, help desk and shared mailbox (alternative to Zendesk and Help Scout).

Helpdesk & TicketingDocker

4.6k

FreeScout has 4,619 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 810 commits in the last year; it replaces Zendesk and Intercom.

2

Frappe Helpdesk

Helpdesk software which helps you streamline your company's support, offers an easy setup, clean user interface, and automation tools to resolve customer queries efficiently.

Helpdesk & TicketingDocker

3.5k

Frappe Helpdesk has 3,451 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 3,361 commits in the last year; it replaces Zendesk and Freshdesk.

1

Uptime Kuma

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

Monitoring & Status PagesDocker

93k

Uptime Kuma has 93,018 GitHub stars, uses the MIT license, ships a Docker image and had 1,361 commits in the last year; it replaces Datadog and Uptime Robot.

2

Prometheus

Metrics-based monitoring and alerting toolkit with a powerful query language, built for cloud-native systems.

Monitoring & Status PagesDocker

67k

Prometheus has 66,825 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 2,795 commits in the last year; it replaces Datadog and Grafana Cloud.

1

Keycloak

Open-source identity and access management with SSO, OIDC, SAML and user federation.

Identity & SSODocker

38k

Keycloak has 37,563 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 3,232 commits in the last year; it replaces Auth0 and Okta.

2

Authelia

Single sign-on and two-factor authentication portal for protecting web apps behind a reverse proxy.

Identity & SSODocker

29k

Authelia has 29,430 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 2,564 commits in the last year; it replaces Auth0 and Okta.