Open Source Alternatives

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Handpicked Open Source Alternatives to Paid Softwares

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Open Source Alternatives

Alternatives
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Handpicked Open Source Alternatives to Paid Softwares

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Claude Code
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Open Core Open Source Tools - Page 2

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Open Core Open Source Tools

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161 projects, sorted by GitHub stars.

Traefik

Alternative toNGINX Plus

Auto-routing reverse proxy for Docker and Kubernetes from labels

65,290 GitHub stars
Licence MIT

Twenty

Alternative toSalesforce

Open source CRM with custom data models and AI-native workflows

58,706 GitHub stars
Licence AGPL-3.0
#CRM

Jellyfin

Alternative toPlex

Free open source media server for movies, TV, and music

58,304 GitHub stars
Licence GPL-2.0

Joplin

Alternative toEvernote

Open source note-taking app with Markdown and sync support

56,815 GitHub stars

Ghost

Alternative toSubstack

Launch a newsletter or paid membership site on your own server

55,574 GitHub stars
Licence MIT
#CMS

Upscayl

Alternative toTopaz Labs Gigapixel AI

Free open source AI image upscaler for Mac, Linux, and Windows

50,790 GitHub stars
Licence AGPL-3.0

ClickHouse

Alternative toSnowflake

Fast open source column-oriented database for analytics

50,501 GitHub stars
Licence Apache-2.0
#Database

Huginn

Alternative toZapier

Self-hosted agents that watch the web and trigger automations

50,085 GitHub stars
Licence MIT

Rocket.Chat

Alternative toMicrosoft Teams

Self-hosted team chat with voice, video, and omnichannel support

46,298 GitHub stars
Licence MIT
#Chat

LibreChat

Alternative toChatGPT

One self-hosted interface for every AI model you use

46,147 GitHub stars
Licence MIT
#AI Agents

Logseq

Alternative toRoam Research

Privacy-first knowledge base with outliner and graph view

45,303 GitHub stars
Licence AGPL-3.0

Zen Browser

Alternative toSigmaOS

Focus-first Firefox fork with workspaces and split-view browsing

45,037 GitHub stars
Licence MPL-2.0