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Now listing open-source alternatives · updated Jun 29, 2026

Open Source Alternatives to Paid Software

Browse a curated directory of self-hosted tools that replace paid software. Every listing is manually reviewed for active maintenance, practical fit, and transparent licensing.

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Open source alternatives to paid software directory

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Handpicked Open Source Alternatives to Paid Softwares

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icon of Scira

Scira

stars 11.7Kforks 1.5K

Open source AI search engine that retrieves cited sources

AI Search ToolsSearch EngineSelf Hosted+4
icon of itsnotes

itsnotes

stars 10forks 0

A self-hosted Google Keep alternative for power users.

Self HostedNote-taking AppsKnowledge Management
icon of freeCodeCamp

freeCodeCamp

stars 450.7Kforks 45.3K

Join the FreeCodeCamp community and contribute!

Developer ToolsOpen CoreKnowledge Management+2
n8n logo

n8n

stars 192.1Kforks 58.5K

Self-hosted workflow automation with 400+ node connectors

Workflow AutomationSelf HostedLow-code+4
icon of ECC

ECC

stars 224.2Kforks 34.3K

Run reusable workflows across coding agents

AI Coding AssistantDeveloper Tools
Logo of Hermes Agent

Hermes Agent

stars 206.6Kforks 37.4K

Self-hosted AI agent with persistent memory, multi-channel chat, and model choice across OpenAI, OpenRouter, and custom endpoints.

AI AgentsLLMSelf Hosted+4
Superpowers icon

superpowers

stars 242.6Kforks 21.5K

Skill-based workflows for coding agents

AI Coding AssistantDeveloper ToolsWorkflow Automation
icon of OpenCode

OpenCode

stars 173.2Kforks 20.8K

OpenCode is an open-source AI coding agent that assists developers in

AI Coding AssistantLLMSelf Hosted+5
icon of Ollama

Ollama

stars 175.2Kforks 16.8K

Run large language models locally on Mac, Linux, or Windows

LLMCLIAPI Infrastructure+3
icon of Open WebUI

Open WebUI

stars 143.6Kforks 20.7K

Chat interface for Ollama and any OpenAI API, with RAG support

LLMRAGSelf Hosted+3
icon of Godot Engine

Godot Engine

stars 113.4Kforks 25.8K

Free open source game engine for 2D and 3D development

Developer ToolsCoding3D Modeling+3
Logo of MarkItDown

MarkItDown

stars 161.8Kforks 11.4K

Convert PDFs, Office files, and images to Markdown, free

LLMLLMOpsDeveloper Tools+3
icon of Home Assistant

Home Assistant

stars 87.7Kforks 37.7K

Open source home automation with local control priority

IoTSelf HostedPrivacy Tools+3
icon of RustDesk

RustDesk

stars 116.1Kforks 17.5K

Self-hosted remote desktop with end-to-end encryption

Self HostedSecurityServer Management+5
icon of Excalidraw

Excalidraw

stars 125.1Kforks 14K

Open source whiteboard for hand-drawn style diagrams

DiagrammingUI/UX DesignGraphic Design+4
icon of TradingAgents

TradingAgents

stars 90Kforks 17.4K

Multi-Agent LLM Framework for Financial Trading

LLMAI AgentsPersonal Finance+1
icon of Redis

Redis

stars 75.2Kforks 24.7K

High-performance open source in-memory data structure store

DatabaseSelf HostedAPI Infrastructure+3
icon of Supabase

Supabase

stars 104Kforks 12.7K

Open source Firebase: Postgres database, auth, and file storage

BaaSDatabaseAuthentication+5
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