Open Source Alternatives
  • Alternatives
  • Categories
    Categories by size897 projects
    • Developer Tools464
    • AI & Machine Learning405
    • Web Development196
    • Business & Productivity195
    • Security & Monitoring130
    • Communication & Collaboration128
    • IT Management125
    • Cloud & Hosting108
    • Product & Project Management106
    • Data & Analytics104
    Browse all 21 categoriesDesign & Creative, LLMOps & AI Tooling and 9 more
  • Blog
  • Advertise
SearchNotion, Slack, password manager.../
Submit
Open Source Alternatives
  • Alternatives
    • Developer Tools464
    • AI & Machine Learning405
    • Web Development196
    • Business & Productivity195
    • Security & Monitoring130
    • Communication & Collaboration128
    • Browse all 21 categories
  • Blog
  • Advertise
Submit your project

New open source projects by email

The projects we add and every new guide. Free, unsubscribe any time.

Open Source Alternatives LogoOpen Source Alternatives

Handpicked Open Source Alternatives to Paid Softwares

Product

  • Categories
  • Tag
  • Advertise

Resources

  • Blog
  • Collection
  • Submit

Company

  • Privacy Policy
  • Terms of Service
  • Refund Policy
  • Sitemap

Alternatives

  • Claude Code
  • Jira
  • Notion
  • Slack
  • Linear
  • Wispr Flow
  • All alternatives
© 2026 Open Source Alternatives. All rights reserved.
Open SourceAlternatives

Tag

Developer Open Source Tools

  • All
  • 3D Modeling
  • A/B Testing
  • AI Agents
  • AI Coding Assistant
  • AI SDK
  • AI Search Tools
  • API Development Tools
  • API Infrastructure
  • Authentication
  • Authorization
  • BaaS
  • Chat
  • Chatbots
  • CI/CD Platforms
  • Cloud Management
  • Cloud Native
  • Cloud Native
  • CMS
  • Coding
  • CRM
  • Customer Support
  • Cybersecurity
  • Data Visualization
  • Database
  • Developer Framework
  • Developer Tools
  • DevOps Tools
  • Docker Management
  • Documentation
  • Email
  • File Sharing
  • File Sync & Storage
  • Graphic Design
  • Headless CMS
  • Knowledge Base
  • Knowledge Management
  • LLM
  • LLMOps
  • Monitoring
  • No Code
  • Note-taking Apps
  • Open Core
  • Privacy Tools
  • Project Management
  • RAG
  • Security
  • Self Hosted
  • Server Management
  • Social Media
  • Testing
  • UI/UX Design
  • Video
  • Web Analytics
  • Web Browsers
  • Web Hosting
  • Web3
  • WebSocket Servers
  • Workflow Automation
  • Workflow Orchestration

578 projects, sorted by GitHub stars.

go-modern-guidelines

InDeveloper Tools

Modern Go idioms for every AI coding agent, free

  • 3,890 GitHub stars
  • Apache-2.0Licence Apache-2.0

jaq

InDeveloper Tools

Rust-built jq clone: faster execution, YAML/TOML support, MIT license

  • 3,809 GitHub stars
  • MITLicence MIT

Letta

Alternative toMem0

Give your LLM agents persistent memory across every conversation

  • 3,663 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #AI Agents

Ploomber

Alternative toGoogle Cloud Composer

Build reproducible Python data pipelines with DAG orchestration

  • 3,620 GitHub stars
  • Apache-2.0Licence Apache-2.0

Craft CMS

Alternative toContentful

Flexible developer-friendly CMS for content teams

  • 3,617 GitHub stars
  • #CMS

fx

Alternative toClaude Code

Native Zig CLI coding agent, 7.8 MiB, any AI model.

  • 3,512 GitHub stars
  • Apache-2.0Licence Apache-2.0

Oso Cloud

Alternative toPermit.io

Open source authorization with RBAC, ABAC, and ReBAC for any app

  • 3,488 GitHub stars
  • Apache-2.0Licence Apache-2.0

Svix

Alternative toHookdeck

Webhook platform with delivery guarantees, retries, and signing

  • 3,457 GitHub stars
  • MITLicence MIT

Atomic Agent

Alternative toGrok Bot

Local-first AI agent that runs on your machine, drives real tools.

  • 3,425 GitHub stars
  • MITLicence MIT
  • #LLM

tuicr

Alternative toGraphite

Terminal UI for code review with vim keybindings and GitHub-style

  • 3,419 GitHub stars
  • MITLicence MIT

sie

Alternative toBaseten

One self-hosted cluster for all the models your agents need

  • 3,416 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #LLM

Switchyard

Alternative toPortkey

LLM proxy with API translation and multi-backend routing

  • 3,413 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #LLM
  • Previous
  • 1
  • More pages
  • 32
  • 33
  • 34
  • More pages
  • 48
  • Next