Find the best open-source alternatives to popular software.

BestAlternative helps you find practical open-source replacements for paid software, compare the options that fit your workflow, and reduce recurring software costs.

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Hey

A blockchain-powered social platform offering censorship-resistant content sharing, user-owned data, and innovative monetization options.

29,432
GPL-3.0

Alternative to: X (Twitter)

Onyx

An open-source platform that connects to 40+ apps to provide intelligent search and AI assistance across all company information

29,388
Other

Alternative to: Algolia

Jitsi

Host encrypted video conferences directly in your browser, deploy on your own servers, or integrate into applications - all with this powerful open source platform.

29,217
Apache-2.0

Alternative to: Microsoft Teams

Chatwoot

An open-source customer engagement platform that unifies multiple channels, enabling businesses to provide seamless support and build lasting relationships.

29,212
Other

Alternative to: Manychat

Signal

Secure messaging app with state-of-the-art encryption, voice/video calls, group chats, and file sharing. No ads, trackers, or data collection.

28,803
AGPL-3.0

Alternative to: Session

Void

Void is an open-source alternative to Cursor, offering AI-powered coding features while maintaining full control over your data and privacy.

28,746
Apache-2.0

Alternative to: Claude Code

OpenTofu

A community-driven, truly open-source fork of Terraform for managing cloud infrastructure through code.

28,644
MPL-2.0

Alternative to: Red Hat Ansible

Redash

Redash is an open-source data visualization and analytics platform that helps teams make sense of their data through SQL queries and interactive dashboards.

28,570
BSD-2-Clause

Alternative to: Power BI

Reflex

Create complete web applications using pure Python code. Features AI-powered generation, built-in components, and one-click deployment with automatic scaling.

28,413
Apache-2.0

Alternative to: Lovable

ProjectDiscovery

Monitor infrastructure for exploitable vulnerabilities with real-time detection, automated workflows, and zero false positives.

28,394
MIT

Alternative to: DataDog

Better Auth

A comprehensive authentication framework offering email/password, social sign-on, two-factor auth, and multi-tenant support with full TypeScript integration.

28,296
MIT

Alternative to: Clerk

Chroma

Open-source vector database designed for AI applications. Store, search, and retrieve embeddings with semantic similarity matching and metadata filtering.

27,953
Apache-2.0

Alternative to: Supabase

Budibase

Low-code platform for creating custom business applications quickly. Design, automate, and deploy with ease.

27,882
Other

Alternative to: Retool

Langfuse

Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.

27,193
Other

Alternative to: LangSmith

KeePassXC

KeePassXC is an open-source password manager that securely stores and manages sensitive information across Windows, macOS, and Linux.

27,130
Other

Alternative to: 1Password

Kestra

A powerful, open-source orchestrator for building, running, and monitoring complex data pipelines and workflows

26,845
Apache-2.0

Alternative to: n8n

Bagisto

A flexible eCommerce platform built on Laravel that enables businesses to create marketplaces, mobile apps, and headless commerce solutions

26,818
MIT

Alternative to: Shopify

SigNoz

Comprehensive monitoring and troubleshooting solution for microservices architectures, offering metrics, traces, and logs in a single pane.

26,743
Other

Alternative to: DataDog

Actual

Open-source budgeting app for personal finance management. Offers powerful features, data privacy, and customization options.

26,440
MIT

Alternative to: YNAB

Ente

End-to-end encrypted cloud storage for photos and videos, offering privacy, security, and seamless cross-device syncing.

26,424
AGPL-3.0

Alternative to: Google Drive

Infisical

End-to-end encrypted secret management platform for seamless integration and enhanced security in development workflows.

26,421
Other

Alternative to: Doppler

Focalboard

Open-source project management tool for teams. Create kanban boards, tables, and tasks to streamline workflows and boost productivity.

26,116
Other

Alternative to: Jira

Huly

An open-source platform that combines project management, team communication, document collaboration, and virtual office spaces in one integrated solution.

25,913
EPL-2.0

Alternative to: Notion

Typesense

Open-source search solution offering blazing speed, typo tolerance, and effortless scalability for developers and businesses.

25,821
GPL-3.0

Alternative to: Pinecone

Onlook

Onlook is an open-source desktop app that allows you to visually edit React applications and automatically write changes back to your code in real-time.

25,675
Apache-2.0

Alternative to: Webflow

Chat2DB

AI-powered SQL client that converts natural language to SQL queries. Supports MySQL, Redis, MongoDB with Text2SQL, BI dashboards, and secure database management.

25,464
Apache-2.0

Alternative to: TablePlus

Graphite

Free open-source vector editor with nondestructive node-based workflow. Create graphics procedurally with infinite scalability. Runs in browser, exports SVG/PNG/JPG.

25,416
Apache-2.0

Alternative to: Canva

Netbird

Open source platform combining WireGuard overlay networks with Zero Trust access controls. Features SSO, MFA, device posture checks, and granular policies for secure remote connectivity.

25,196
Other

Alternative to: Zerotier

Pulumi

Pulumi enables developers to define and manage cloud infrastructure using familiar programming languages instead of domain-specific languages.

25,187
Apache-2.0

Alternative to: Red Hat Ansible

Zulip

Zulip is an open-source team chat app that uses threaded conversations to keep communication organized and efficient for teams of all sizes.

25,171
Apache-2.0

Alternative to: Microsoft Teams