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.
Built withDirstarterOpenAlternative is supported by these incredible partners and sponsors. Advertise with us
Track and improve your brand's visibility in AI answers
Stars
186Last commit
7 hours agoLicense
MIT
Tracks how often AI tools like ChatGPT, Claude, and Perplexity mention or cite your brand, then fixes the gaps through AEO strategy and content work.
Open Source Alternative to:
AI coding agent that works inside your terminal
Stars
129,634Last commit
23 hours agoLicense
Apache-2.0
Terminal-based AI coding agent that inspects files, edits code, runs commands, and integrates into CI pipelines using OpenAI's Codex models.
Open Source Alternative to:
Open source AI coding agent for the terminal and IDE
Stars
28,541Last commit
7 hours agoLicense
Apache-2.0
Terminal-based AI coding agent that reads your codebase, edits files and runs commands, with support for Qwen, OpenAI, Anthropic, Gemini and local models.
Open Source Alternative to:
Client-side encryption for your cloud files
Stars
16,321Last commit
2 days agoLicense
GPL-3.0
Encrypts files and filenames locally before they reach Dropbox, Google Drive, OneDrive, or any other cloud, so only you hold the key.
Open Source Alternative to:
Track and improve your brand's visibility in AI search
Stars
146Last commit
8 hours agoLicense
MIT
Monitors how your brand appears across ChatGPT, Perplexity, Google AI Overviews, and other AI platforms, then turns those insights into prioritized content and optimization actions.
Open Source Alternative to:
Self-hosted password vault built for teams and compliance
Stars
1,835Last commit
12 hours agoLicense
GPL-3.0
Collaborative password manager with folder-level access control, AES-256-GCM encryption, governance tools, and Linux password rotation, runs on your own servers.
Open Source Alternative to:
Self-hosted password manager built for business teams
Stars
103Last commit
2 days agoLicense
Apache-2.0
Team-focused password manager with client-side encryption, SAML, LDAP, audit logs, and compliance policies. Self-host on your own servers or use as SaaS.
Open Source Alternative to:
Self-hosted AI agent for chat, automation, and workflows
Stars
49,134Last commit
7 hours agoLicense
MIT
Lightweight, self-hosted AI agent that runs in a web UI, terminal, or chat app, handling long-running workflows with controlled token budgets.
Open Source Alternative to:
Self-hosted Bitwarden server that runs lean on your hardware
Stars
69,204Last commit
2 days agoLicense
AGPL-3.0
Unofficial Bitwarden-compatible server written in Rust, built for self-hosting on low-resource hardware without sacrificing client compatibility.
Open Source Alternative to:
Open blueprints for governed, always-on AI agents
Stars
22,762Last commit
8 hours agoLicense
Apache-2.0
Collection of open blueprints combining models, agent harnesses, and runtime controls to deploy specialized autonomous AI agents with policy-based guardrails.
Open Source Alternative to:
One API to deploy and run agents on any model or machine
Stars
2,936Last commit
1 day agoLicense
Apache-2.0
Production-ready agent infrastructure that handles state, machines, permissions, and history so you don't have to build the platform yourself.
Open Source Alternative to:
AI agent runtime with encrypted enclaves for your secrets
Stars
12,658Last commit
5 days agoLicense
Apache-2.0
Runs AI agents inside Trusted Execution Environments on NEAR AI Cloud, keeping credentials encrypted and invisible to the model at all times.
Open Source Alternative to:
Lightroom-compatible RAW editor, no subscription
Stars
1,216Last commit
9 hours agoLicense
MIT
Non-destructive RAW photo editor for macOS, Linux, and Windows that reads Lightroom catalogs, presets, and camera profiles. Free, MIT licensed, built in Rust.
Open Source Alternative to:
Organise, share, and control digital assets at scale
Stars
83Last commit
1 day agoLicense
BSD-3-Clause
Self-hostable DAM platform for managing images, video, documents, and audio with metadata search, approval workflows, and open API integrations.
Open Source Alternative to:
Self-hosted AI agent with 70+ providers and 30+ channels
Stars
32,993Last commit
13 hours agoLicense
Apache-2.0
A single Rust binary that runs a personal AI agent on your own hardware, connecting to 70+ LLM providers and 30+ messaging channels with built-in sandboxing and cryptographic tool receipts.
Open Source Alternative to:
Access control for AI agents your customers log in with
Stars
19Last commit
11 days agoLicense
BUSL-1.1
Detects AI agents using customer credentials, masks private fields, holds risky actions for passkey approval, and signs every decision on your own server.
Open Source Alternative to:
A team of AI agents in a chat app, on your own machine
Stars
5,046Last commit
7 hours agoLicense
Apache-2.0
Run a team of AI agents locally on your own API keys and subscriptions, with scheduled tasks, computer use, and Gmail, GitHub and Slack integrations.
Open Source Alternative to:
Run Claude Code, Codex, Grok, and more from one app
Stars
115Last commit
10 hours agoLicense
Apache-2.0
A Mac app that brings multiple AI coding agents into a single window, running on your existing subscriptions with parallel agent sessions, PR management, and a built-in browser.
Open Source Alternative to:
Coding agent that runs on local and open-weight models
Stars
68,595Last commit
7 days agoLicense
Apache-2.0
Coding agent that lets LLMs write and execute code, manage files, and control your computer using local or low-cost models.
Open Source Alternative to:
Track your brand's visibility across AI answer engines
Stars
270Last commit
2 days agoLicense
AGPL-3.0
GEO tool that queries ChatGPT, Claude, Gemini, and Perplexity with your buyers' questions, then shows you who gets recommended and how to close the gap.
Open Source Alternative to:
Build and run AI agents that handle recurring work for you
Stars
187,627Last commit
12 hours agoLicense
Other
Platform for building, deploying, and running AI agents that automate repeatable digital work across research, outreach, content, and support without writing code.
Open Source Alternative to:
Type shortcuts, expand to full text instantly
Stars
14,646Last commit
7 days agoLicense
GPL-3.0
Cross-platform text expander that replaces typed keywords with full snippets, templates, dates, emojis, or script output across any app.
Open Source Alternative to:
Agentic AI framework that runs, learns, and self-corrects
Stars
19,497Last commit
3 days agoLicense
MIT
Autonomous AI agent framework that operates on its own sandboxed computer, creates tools dynamically, manages memory, and executes multi-step workflows with full transparency.
Open Source Alternative to:
Turn short shortcuts into your everyday words
Stars
42Last commit
9 hours agoLicense
AGPL-3.0
Text expander that replaces typed abbreviations with saved replies, signatures, and snippets across macOS, Windows, and Linux.
Open Source Alternative to:
General-purpose AI agent for code, workflows, and more
Stars
55,370Last commit
12 hours agoLicense
Apache-2.0
Local AI agent with a desktop app, CLI, and API that connects to 15+ LLM providers and 70+ extensions for code, research, automation, and data tasks.
Open Source Alternative to:
Lightweight code editor with agents, Git, and terminal built in
Stars
3,113Last commit
1 day agoLicense
AGPL-3.0
Open-source code editor for macOS, Windows, and Linux that puts coding agents, terminal, Git, and GitHub in a single window.
Open Source Alternative to:
Free, open-source image editor built for Mac compositing
Stars
17,298Last commit
3 days agoLicense
MIT
Mac-native Photoshop alternative built around compositing and post-processing workflows, with layers, masks, blend modes, filters, and background removal.
Open Source Alternative to:
High-throughput, memory-efficient serving engine for LLMs
Stars
94,001Last commit
8 hours agoLicense
Apache-2.0
Inference and serving engine for large language models, built for speed and hardware efficiency with an OpenAI-compatible API and support for a wide range of open models.
Open Source Alternative to:
Self-hosted enterprise agent platform with real permissions
Stars
6,593Last commit
9 hours agoLicense
MIT
Deploy AI agents inside your own infrastructure with document-grounded answers, computer use, and support for any AG-UI-compatible agent framework.
Open Source Alternative to:
Error tracking, performance, and uptime in one place
Stars
168Last commit
9 days agoLicense
MIT
Self-hostable error tracking platform compatible with Sentry SDKs. Tracks exceptions, monitors performance, checks uptime, and collects logs without the Sentry price tag.
Open Source Alternative to:
Professional vector graphics editor for all skill levels
Stars
4,011Last commit
9 hours agoLicense
Other
Cross-platform vector graphics editor with flexible drawing tools, Bezier curves, powerful text handling, and broad file format support for illustrators and designers.
Open Source Alternative to:
A verified workspace where AI agents store and build knowledge
Stars
532Last commit
5 days agoLicense
MIT
Busabase gives AI agents a shared database, knowledge base, and skills registry where every proposed change goes through human review before becoming canonical data.
Open Source Alternative to:
Website analytics, uptime monitoring, and server status in one
Stars
3,111Last commit
8 hours agoLicense
Apache-2.0
Self-hostable platform combining website analytics, uptime monitoring, server status, Docker tracking, status pages, and telemetry for indie developers and small teams.
Open Source Alternative to:
Webhook delivery platform with retries, security, and a portal
Stars
3,452Last commit
16 hours agoLicense
MIT
Add customer-facing webhooks to your product without building the infrastructure. Handles retries, signatures, multi-tenancy, filtering, and monitoring at scale.
Open Source Alternative to:
Programmable notes with queries, Lua scripting, and wiki links
Stars
6,335Last commit
9 hours agoLicense
MIT
A self-hosted, browser-based note-taking system that turns plain Markdown pages into a queryable, scriptable knowledge base you control.
Open Source Alternative to:
Sell tickets for events, conferences, and exhibitions
Stars
2,542Last commit
1 day agoLicense
Unknown
Full-stack ticketing platform covering online shop, point of sale, access control, and hardware for events of any size or industry.
Open Source Alternative to:
Chromium browser built for sharing with AI agents
Stars
17,576Last commit
2 days agoLicense
MIT
A Chromium-based browser that lets AI agents like Claude Code and Codex run web automation using your real logged-in sessions, without interrupting your browsing.
Open Source Alternative to:
Passwordless OIDC provider built for self-hosters
Stars
9,612Last commit
1 day agoLicense
BSD-2-Clause
Self-hostable OpenID Connect and OAuth 2.0 provider that lets users sign in to any OIDC-compatible app using passkeys instead of passwords.
Open Source Alternative to:
Terminal coding agent with full model and data control
Stars
1,736Last commit
13 hours agoLicense
MIT
Open-source AI coding agent for the terminal that works with 25+ model providers, keeps sessions on your disk, and ships as a single Go binary with no telemetry.
Open Source Alternative to:
Monitors websites and APIs, pages on-call, and publishes a status page
Stars
47Last commit
17 hours agoLicense
AGPL-3.0
Hosted uptime monitoring with multi-region checks, eight monitor types, on-call rotations, escalation policies, and public status pages for SaaS teams and agencies.
Open Source Alternative to:
On-the-fly image resizing and conversion for your own server
Stars
11,125Last commit
4 days agoLicense
Apache-2.0
Self-hosted image processing server that resizes, converts, and optimizes images on demand via URL parameters, with built-in security against common attack vectors.
Open Source Alternative to:
Live stock quotes, charts, and AI-scored news in your terminal
Stars
79Last commit
1 day agoLicense
MIT
Terminal dashboard for stock quotes, candlestick charts, AI-scored news, SEC Form 4 insider activity, and earnings reads. Free tier, no card required.
Open Source Alternative to:
People are looking for alternatives to...
View all alternatives
Claude Code
An agentic coding tool that runs in your terminal, reads your codebase, and executes tasks like writing features, fixing bugs, and running tests using natural language instructions.
18 alternatives
Spotify
Access millions of songs, podcasts, and playlists instantly with personalized recommendations and offline listening across all your devices.
2 alternatives
CapCut
Free video editing app that lets you create professional-quality videos with advanced editing tools, effects, and templates for social media and beyond.
5 alternatives
Claude
A next generation AI assistant built for work and trained to be safe, accurate, and secure.
12 alternatives
Notion
An all-in-one workspace for note-taking, project management, knowledge sharing, and collaboration across teams.
22 alternatives
Lovable
Create fully functional applications by describing your idea, with AI-powered code generation and beautiful design
3 alternatives
Trending categories
View all categoriesSEO Tools
Tools that analyze website performance, optimize content visibility, track rankings, and improve search engine results.
AI Coding Agent Orchestrators
Tools that run and coordinate multiple AI coding agents in parallel across isolated git worktrees, also known as agent harnesses or agentic dev environments.
CRM Systems
Customer relationship management systems for tracking contacts, deals, and pipelines, with activity history and sales reporting.
Voice Dictation Tools
Applications that convert spoken words into text for faster writing across any application.
Subscription & Billing Management Tools
Platforms for managing recurring subscriptions and complex billing models.
ERP Systems
Enterprise Resource Planning systems integrating various business functions.
c15t – Open-source cookie banner, built for control and lightening fast modern web apps.
Capture
Docmost
CodeRabbit