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Open Source Alternatives to Popular Software

Over 1 million users replaced their proprietary tools with open source software. Discover the best alternatives and join the movement.

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InfluxDB
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Sevalla
Openlane
CodeRabbit
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c15t
Favicon of Voiden

Voiden

Build APIs like code with Git-native workspace

  • Stars

    1,663

  • Last commit

    2 days ago

  • License

    Apache-2.0
Offline-first API workspace that unifies specs, docs, tests, and mocks in programmable Markdown blocks. Version control everything in plain text files.

Open Source Alternative to:

Favicon of Postman
Postman
Favicon of Fullmoon

Fullmoon

AI
Chat with private and local large language models

  • Stars

    2,264

  • Last commit

    1 year ago

  • License

    MIT
A mobile app for interacting with private, local large language models that work offline and are optimized for Apple silicon.

Open Source Alternative to:

Favicon of Claude
Claude
Favicon of Beam

Beam

AI
Serverless GPU compute with sub-second cold starts

  • Stars

    1,768

  • Last commit

    21 hours ago

  • License

    AGPL-3.0
Run GPU inference, task queues, and sandboxes on serverless infrastructure with sub-second cold starts, autoscaling, and support for your own AWS, GCP, or bare metal.

Open Source Alternative to:

Favicon of Daytona
Daytona
Favicon of LLM Gateway

LLM Gateway

AI
Unified API for all LLM providers with analytics

  • Stars

    1,607

  • Last commit

    19 hours ago

  • License

    MIT
Route, manage, and analyze LLM requests across multiple providers with one API. Compatible with OpenAI format, includes usage analytics and performance monitoring.

Open Source Alternative to:

Favicon of OpenRouter
OpenRouter
Favicon of ownCloud

ownCloud

Enterprise file sync, share, and collaboration platform

  • Stars

    2,111

  • Last commit

    1 day ago

  • License

    Apache-2.0
Self-hostable file platform for enterprises needing data sovereignty, real-time document collaboration, and compliance with GDPR, HIPAA, and other regulations.

Open Source Alternative to:

Favicon of Google Drive
Google Drive
Favicon of SeriesGuide

SeriesGuide

Track your TV shows and movies on Android

  • Stars

    2,149

  • Last commit

    2 days ago

  • License

    Unknown
Android app for tracking TV shows and movies you're watching, have watched, or plan to watch, powered by TMDb data.

Open Source Alternative to:

Favicon of TV Time
TV Time
Favicon of Semaphore

Semaphore

Open source CI/CD platform that's faster and costs less

  • Stars

    1,595

  • Last commit

    1 day ago

  • License

    Unknown
Continuous integration and delivery platform offering faster builds, lower costs, and maintenance-free operations. Cut build times dramatically while reducing CI/CD expenses by 50%.

Open Source Alternative to:

Favicon of Jenkins
Jenkins
Favicon of Plakar

Plakar

Encrypted, queryable backups for engineers who value time

  • Stars

    2,043

  • Last commit

    1 day ago

  • License

    ISC
Backup solution with CLI, API and UI interfaces. Clean defaults, easy deployment. Encrypted, queryable backups with deduplication and compression.

Open Source Alternative to:

Favicon of Veeam
Veeam
Favicon of FeatBit

FeatBit

Open-source feature flag management for seamless deployments

  • Stars

    1,906

  • Last commit

    2 days ago

  • License

    MIT
FeatBit is a fast, scalable feature flag service that enables risk mitigation and fosters business growth through controlled feature releases.

Open Source Alternative to:

Favicon of LaunchDarkly
LaunchDarkly
Favicon of Nagios

Nagios

Complete infrastructure monitoring with 25+ years of expertise

  • Stars

    2,041

  • Last commit

    29 days ago

  • License

    GPL-2.0
Free open source IT monitoring solution for servers, networks, and applications. Trusted by 1M+ users worldwide with powerful alerting and enterprise-grade features.

Open Source Alternative to:

Favicon of Opsgenie
Opsgenie
Favicon of Tirreno

Tirreno

Security framework that protects from within your product

  • Stars

    1,507

  • Last commit

    22 days ago

  • License

    AGPL-3.0
Open-source security framework for threat detection, fraud prevention, and abuse monitoring. Self-hosted solution with built-in dashboard and risk scoring.

Open Source Alternative to:

Favicon of Seon
Seon
Favicon of Amical

Amical

AI
Type 10x faster with AI-powered voice dictation

  • Stars

    1,522

  • Last commit

    10 days ago

  • License

    MIT
Open source AI dictation app that transforms speech to text with context-aware formatting. Fast, accurate transcription for meetings, notes, and hands-free typing.

Open Source Alternative to:

Favicon of Wispr Flow
Wispr Flow
Favicon of Nightingale

Nightingale

AI
Transform any song into karaoke with AI-powered vocals

  • Stars

    1,448

  • Last commit

    4 days ago

  • License

    GPL-3.0
AI-powered karaoke software that separates vocals from any song, transcribes lyrics with word-level sync, scores your pitch in real-time, and includes dynamic backgrounds.

Open Source Alternative to:

Favicon of Smule
Smule
Favicon of Authgear

Authgear

Managed identity and access management for any app

  • Stars

    2,024

  • Last commit

    2 days ago

  • License

    Apache-2.0
Authgear is a managed IAM platform handling authentication, SSO, and user management for B2C and B2B apps, with biometrics, MFA, and zero-trust support.

Open Source Alternative to:

Favicon of Auth0
Auth0
Favicon of Dyrector

Dyrector

Simplify container deployment across environments

  • Stars

    1,845

  • Last commit

    4 days ago

  • License

    Apache-2.0
Effortless container orchestration platform for seamless deployment, management, and monitoring of applications across multiple environments.

Open Source Alternative to:

Favicon of Docker Desktop
Docker Desktop
Favicon of Aptabase

Aptabase

Privacy-first analytics for mobile and desktop apps

  • Stars

    1,792

  • Last commit

    24 days ago

  • License

    AGPL-3.0
Open-source, self-hostable analytics platform for mobile and desktop apps, prioritizing user privacy and data control.

Open Source Alternative to:

Favicon of Google Analytics
Google Analytics
Favicon of Padloc

Padloc

Secure password manager with end-to-end encryption

  • Stars

    2,923

  • Last commit

    1 year ago

  • License

    AGPL-3.0
Open-source password manager with end-to-end encryption for passwords, credit cards, notes, and documents. Cross-platform sync with secure sharing capabilities.

Open Source Alternative to:

Favicon of LastPass
LastPass
Favicon of Mezon

Mezon

Create custom spaces to chat, game, and connect globally

  • Stars

    1,694

  • Last commit

    2 days ago

  • License

    MIT
Build your own community space for gaming, chatting, and hanging out with friends worldwide. Customize your environment for the perfect social experience.

Open Source Alternative to:

Favicon of Discord
Discord
Favicon of mCaptcha

mCaptcha

Privacy-first proof-of-work CAPTCHA without user friction

  • Stars

    2,489

  • Last commit

    11 months ago

  • License

    AGPL-3.0
Privacy-focused proof-of-work CAPTCHA system that silently protects websites without tracking users or requiring image solving. Drop-in replacement for reCAPTCHA.

Open Source Alternative to:

Favicon of reCAPTCHA
reCAPTCHA
Favicon of Wire

Wire

Secure collaboration platform with end-to-end encryption

  • Stars

    2,546

  • Last commit

    8 months ago

  • License

    GPL-3.0
A comprehensive collaboration platform offering end-to-end encrypted messaging, file sharing, and video calls with enterprise-grade security and compliance features.

Open Source Alternative to:

Favicon of Discord
Discord
Favicon of Flowglad

Flowglad

AI
Cross-system automation and knowledge base for accounting firms

  • Stars

    1,722

  • Last commit

    4 months ago

  • License

    Unknown
Connects client data across tools, automates recurring accounting workflows, and maintains a self-updating knowledge base with human approval controls.
Favicon of Kodus

Kodus

AI
AI code review that learns your team's standards

  • Stars

    1,352

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Open source AI code reviewer that analyzes pull requests for quality, security, and performance while respecting your existing rules and model preferences.

Open Source Alternative to:

Favicon of CodeRabbit
CodeRabbit
Favicon of Jean

Jean

AI
Parallel AI agent workspaces with Git and project context

  • Stars

    1,255

  • Last commit

    3 days ago

  • License

    Apache-2.0
Run multiple AI coding agents in isolated Git worktrees, with cross-repo context, GitHub/Linear integrations, and support for Claude, Codex, Cursor, and more.

Open Source Alternative to:

Favicon of Claude Code
Claude Code
Favicon of Conar

Conar

AI-powered PostgreSQL management made simple

  • Stars

    1,434

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Modern PostgreSQL database management with AI-powered filtering, natural language queries, and cloud sync. Focus on your data while AI handles complexity.

Open Source Alternative to:

Favicon of TablePlus
TablePlus
Favicon of Tailcall

Tailcall

AI
The modern GraphQL runtime

  • Stars

    1,443

  • Last commit

    10 days ago

  • License

    Apache-2.0
Swiftly design and ship best-practice GraphQL backends atop existing data sources and APIs.

Open Source Alternative to:

Favicon of Apollo GraphQL
Apollo GraphQL
Favicon of Hexabot

Hexabot

AI
Self-hosted AI agents and workflows across any channel

  • Stars

    1,208

  • Last commit

    13 days ago

  • License

    AGPL-3.0
Build and run AI agents, agentic workflows, and multichannel automation on your own infrastructure, with memory, RAG, MCP tools, and full data control.

Open Source Alternative to:

Favicon of Manychat
Manychat
Favicon of Splitpro

Splitpro

Effortlessly split expenses with friends and groups

  • Stars

    1,425

  • Last commit

    20 days ago

  • License

    MIT
Free, open-source expense sharing app with multi-currency support, unequal splits, and receipt uploads. Import from Splitwise and enjoy PWA functionality.

Open Source Alternative to:

Favicon of Splitwise
Splitwise
Favicon of Trench

Trench

Fast, scalable analytics infrastructure

  • Stars

    1,662

  • Last commit

    5 months ago

  • License

    MIT
Open source analytics platform built on ClickHouse and Kafka, offering high-speed event tracking and real-time querying capabilities.

Open Source Alternative to:

Favicon of Amplitude
Amplitude
Favicon of Gigapipe

Gigapipe

All-in-one observability with unlimited data ingestion

  • Stars

    1,703

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Unified platform for logs, metrics, traces and profiles with native compatibility for popular tools like OpenTelemetry, Prometheus, and Loki. No data silos, no usage limits.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of Sendportal

Sendportal

Self-hosted email marketing with unlimited everything

  • Stars

    2,167

  • Last commit

    2 years ago

  • License

    MIT
Open-source email marketing platform offering unlimited subscribers, campaigns, and workspaces. Self-hosted solution with powerful API and beautiful interface.

Open Source Alternative to:

Favicon of Resend
Resend
Favicon of Zola

Zola

AI
AI chat companion with versatile model support

  • Stars

    1,530

  • Last commit

    9 months ago

  • License

    Apache-2.0
Open-source chat application that lets you interact with multiple AI models in one interface, offering flexible conversations and diverse capabilities.

Open Source Alternative to:

Favicon of Claude
Claude
Favicon of Apache Cloudberry

Apache Cloudberry

Unlock Data's Potential with Open Source Power

  • Stars

    1,385

  • Last commit

    2 days ago

  • License

    Apache-2.0
Leverage advanced analytics with a modern PostgreSQL kernel. 100% open source for robust data solutions.

Open Source Alternative to:

Favicon of Snowflake
Snowflake
Favicon of 2FAS

2FAS

Local-first 2FA authenticator and password manager

  • Stars

    1,502

  • Last commit

    3 days ago

  • License

    GPL-3.0
Open-source authenticator and password manager that stores 2FA tokens and passwords locally on your device, with zero-knowledge encryption and no account required.

Open Source Alternative to:

Favicon of LastPass
LastPass
Favicon of Nitric

Nitric

Cloud-native framework for infrastructure from code

  • Stars

    2,015

  • Last commit

    7 months ago

  • License

    Apache-2.0
Nitric automates cloud infrastructure provisioning from your application code for AWS, GCP and Azure

Open Source Alternative to:

Favicon of Supabase
Supabase
Favicon of Litlyx

Litlyx

Cookie-less analytics for privacy-focused insights

  • Stars

    1,740

  • Last commit

    9 months ago

  • License

    Apache-2.0
Track user behavior, custom events, and conversion funnels in real-time with a single line of code, all while maintaining GDPR compliance.

Open Source Alternative to:

Favicon of Google Analytics
Google Analytics
Favicon of Databuddy

Databuddy

Privacy-first analytics without cookies or tracking

  • Stars

    1,145

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Get powerful web analytics with zero cookies, 100% GDPR compliance, and full data ownership. Lightweight 3KB script delivers real-time insights without compromising user privacy.

Open Source Alternative to:

Favicon of Google Analytics
Google Analytics
Favicon of XWiki

XWiki

Open-source knowledge management and collaboration platform

  • Stars

    1,304

  • Last commit

    1 day ago

  • License

    LGPL-2.1
XWiki is a flexible, feature-rich wiki software that helps organizations structure and share knowledge efficiently.

Open Source Alternative to:

Favicon of Notion
Notion
Favicon of Terrateam

Terrateam

GitOps orchestration for infrastructure as code

  • Stars

    1,279

  • Last commit

    2 days ago

  • License

    MPL-2.0
Automate infrastructure changes with secure GitOps workflows. Plan, validate, and deploy Terraform, OpenTofu, and Pulumi directly from pull requests.

Open Source Alternative to:

Favicon of env0
env0
Favicon of Hoodik

Hoodik

Secure self-hosted cloud storage with end-to-end encryption

  • Stars

    1,466

  • Last commit

    7 days ago

  • License

    Unknown
Lightweight, self-hosted cloud storage built with Rust and Vue.js. Features end-to-end encryption, file sharing, search capabilities, and Docker deployment.

Open Source Alternative to:

Favicon of Mega
Mega
Favicon of UnInbox

UnInbox

Transform team email into efficient collaborative workflows

  • Stars

    1,758

  • Last commit

    7 months ago

  • License

    AGPL-3.0
Streamline team communication with shared inboxes, unlimited email addresses, and customizable workflows. Perfect for modern businesses seeking organized email management.

Open Source Alternative to:

Favicon of Gmail
Gmail
Favicon of Chalk.ist

Chalk.ist

Transform your source code into stunning visuals

  • Stars

    1,846

  • Last commit

    8 months ago

  • License

    MIT
Create beautiful, customizable images of your source code with ease, perfect for presentations, documentation, and social media sharing.
Favicon of WunderGraph

WunderGraph

Unify APIs, databases, and services effortlessly

  • Stars

    1,263

  • Last commit

    1 day ago

  • License

    Apache-2.0
A powerful backend framework that simplifies API integration, enhances security, and boosts developer productivity for modern web applications.

Open Source Alternative to:

Favicon of Apollo GraphQL
Apollo GraphQL
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Favicon of Claude Code

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Access millions of songs, podcasts, and playlists instantly with personalized recommendations and offline listening across all your devices.
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Free video editing app that lets you create professional-quality videos with advanced editing tools, effects, and templates for social media and beyond.
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Voice Dictation Tools

Applications that convert spoken words into text for faster writing across any application.
Favicon of OpenWisprFavicon of FluidVoiceFavicon of VoiceInk
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Tools that run and coordinate multiple AI coding agents in parallel across isolated git worktrees, also known as agent harnesses or agentic dev environments.
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Tools that take a task or issue and carry it to completion on their own: planning, editing files, running tests, and opening pull requests.
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AI Gateways

Platforms that route and secure API access to multiple AI models through one unified interface, with authentication, rate limiting, and usage monitoring.
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Platforms for managing recurring subscriptions and complex billing models.
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