Find the best open-source alternatives to popular software

Discover privacy-friendly, self-hosted and open-source alternatives to the tools you use every day.

Popular open-source alternatives

Apple Photos

Photo and video library synced across Apple devices with iCloud

4 alternatives

Google Workspace

Productivity suite with Gmail, Drive, Docs, Sheets, and Meet

5 alternatives

BigCommerce

Hosted SaaS ecommerce platform for online stores

9 alternatives

Skype

Video calling and messaging app retired by Microsoft in 2025

5 alternatives

Emergent

AI app builder that generates full-stack apps from prompts

2 alternatives

SAP

Enterprise resource planning software for finance, supply chain, and HR

4 alternatives

Grammarly

AI writing assistant for grammar, spelling, tone, and style

2 alternatives

Umbrel

Home server OS with an app store for self-hosting

3 alternatives

Tally

Free form builder with unlimited forms and submissions

6 alternatives

Firebase

Backend platform for apps with databases, authentication, and hosting

14 alternatives

Skool

Community, courses, and events platform for creators and coaches

7 alternatives

HubSpot

CRM and marketing platform for sales, marketing, service, and content

13 alternatives

Atlas

OpenAI's ChatGPT Atlas browser with a built-in AI assistant and agent mode

9 alternatives

Manus

General-purpose AI agent that carries out tasks autonomously

3 alternatives

LiveChat

Live chat and customer support software for websites

6 alternatives

Antigravity

Google's agent-first AI development environment

9 alternatives

Telegram

Cloud-based messenger with chats, channels, groups, bots, and calls

5 alternatives

Clerk

Drop-in authentication and user management for modern web apps

9 alternatives

Semrush

SEO and marketing platform for keywords, backlinks, rankings, and competitors

1 alternative

Life360

Family location sharing, safety alerts, and driving reports

1 alternative

Base44

AI app builder that creates and hosts full-stack apps from prompts

3 alternatives

1Password

Password manager and secrets platform for individuals, families, and teams

10 alternatives

Filmora

Consumer video editor with templates, effects, and AI tools

5 alternatives

CCleaner

System cleaner for junk files, browser data, registry, and startup items

3 alternatives

CodeGPT

AI coding assistant for IDEs with chat, completions, and agents

9 alternatives

Opsgenie

Alerting, on-call scheduling, and incident management for operations teams

8 alternatives

Stripe Billing

Subscription billing, usage-based pricing, and invoicing on Stripe

10 alternatives

Facebook

Social network for friends, groups, pages, photos, and video

4 alternatives

Snowflake

Cloud data warehouse and analytics platform

10 alternatives

Youform

Online form and survey builder with conditional logic and integrations

7 alternatives

Framer

Visual website builder with design, animation, CMS, and hosting

10 alternatives

MongoDB

Document database for flexible JSON-like data at scale

8 alternatives

TV Time

TV show and movie tracker with episode progress, reminders, and community

3 alternatives

OpenRouter

Unified API and marketplace for accessing many LLMs through one endpoint

3 alternatives

Jina AI

Search foundation APIs for web reading, embeddings, rerankers, and AI search

4 alternatives

Microsoft Office

Word, Excel, PowerPoint, and Outlook productivity suite

3 alternatives

Calendly

Scheduling and booking links for meetings and appointments

3 alternatives

Salesforce

Enterprise CRM platform for sales, service, marketing, and customization

12 alternatives

Substack

Newsletter and publishing platform with paid subscriptions

8 alternatives

Attio

Customizable CRM with flexible data models and AI automation

13 alternatives

Apple Maps

Apple's maps and navigation app for iPhone, Mac, and CarPlay

3 alternatives

Datadog

Cloud monitoring and observability for metrics, logs, traces, and security

33 alternatives

Keeper

Password manager and secrets platform for individuals, teams, and enterprises

11 alternatives

Google Sheets

Browser-based spreadsheets with real-time collaboration

9 alternatives

YNAB

Zero-based budgeting app for planning and tracking every dollar

12 alternatives

Comet

Perplexity's AI-powered browser with a built-in assistant and agents

10 alternatives

Google Chrome

Google's Chromium-based web browser with Google account sync

8 alternatives

QuickBooks

Accounting, invoicing, expenses, payroll, and small business finance software

8 alternatives

Raindrop

Bookmark manager for collections, tags, highlights, and web archiving

10 alternatives

NordVPN

Commercial consumer VPN service with a global server network

2 alternatives

Why OSS Alternatives?

Open source first

Only genuine open-source alternatives — no source-available bait.

Self-hosting information

Quickly see which tools you can host yourself, and how.

Independent comparisons

Compare licenses, features, pricing and use cases side by side.

Featured comparison

Looking for an n8n alternative?

Here are three genuinely open-source workflow automation tools worth considering.

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See all n8n alternatives

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Screen Studio Alternatives in 20265 Best Open Source Granola Alternatives in 20264 Best Open Source Claude Cowork Alternatives in 20262 Best Open Source Plex Alternatives in 202619 Best Open Source Warp Alternatives in 202614 Best Open Source Kiro Alternatives in 20262 Best Open Source Amazon Prime Alternatives in 2026Zencoder Alternatives in 2026: Open Source & Self-HostedSplitwise Alternatives in 2026: Open Source & Self-HostedVercel Alternatives in 2026: Open Source & Self-HostedResend Alternatives in 2026: Open Source & Self-HostedClickUp Alternatives in 2026: Open Source & Self-HostedTrello Alternatives in 2026: Open Source & Self-HostedOpen-Source Alternatives to Microsoft Excel in 2026WordPress Alternatives in 2026: Open Source, Self-Hosted & HeadlessTablePlus Alternatives in 2026: Open Source & Source AvailableX (Twitter) Alternatives in 2026: Open Source & DecentralizedOpen-Source Alternatives to Brave in 2026Open-Source Alternatives to Google Forms in 2026Open-Source 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How we select alternatives

Every tool we list is checked against the same criteria before it earns a place on this site:

  • ·Open-source license (no fake-open or source-available tricks)
  • ·Active development and maintenance
  • ·Self-hosting availability and documented setup
  • ·Feature parity with the proprietary tool
  • ·Project maturity and production readiness
  • ·Any paid tiers or hosted pricing, disclosed clearly
Read our methodology