Find the best open-source alternatives to popular software.

BestAlternative helps you find self-hosted, privacy-friendly, free, and local-first replacements for paid software, compare the tradeoffs, and plan a practical migration path.

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Rallly logo

Rallly

A user-friendly, open-source tool for coordinating events and meetings without the hassle of back-and-forth emails or messages.

5,196
AGPL-3.0

Alternative to: Calendly

Shlink logo

Shlink

Keep control over all your shortened URLs by serving them under your own domains with this simple yet powerful tool.

5,187
MIT

Alternative to: Bitly

Papra logo

Papra

A document management platform that helps you archive, organize, and search files with email ingestion, tagging capabilities, and powerful search functionality.

5,101
AGPL-3.0

Alternative to: Microsoft 365

Kener logo

Kener

Kener is an open-source status page tool that simplifies service monitoring and incident communication with a sleek interface and GitHub integration.

5,085
MIT

Alternative to: Opsgenie

Mathesar logo

Mathesar

A self-hosted tool that provides an intuitive, spreadsheet-style interface for viewing, editing, and querying PostgreSQL databases without technical expertise.

5,083
GPL-3.0

Alternative to: Airtable

Digger logo

Digger

Open-source CI/CD orchestrator for Terraform with pull request automation, drift detection, and enterprise-grade security. Self-hostable with private runners.

5,017
MIT

Alternative to: Red Hat Ansible

Colanode logo

Colanode

Open-source collaboration platform combining real-time chat, document editing, file sharing, and project management. Self-host for complete control.

5,005
Apache-2.0

Alternative to: Notion

Kdenlive logo

Kdenlive

Cross-platform non-linear video editor offering professional features for free. Edit videos on Linux, Windows, macOS, and BSD with advanced tools and effects.

4,977
GPL-3.0

Alternative to: CapCut

Vikunja logo

Vikunja

A powerful, open-source task management platform for teams and individuals, offering customizable workflows and seamless integration.

4,974
AGPL-3.0

Alternative to: Jira

Jitsu logo

Jitsu

Collect, transform, and sync data across your entire infrastructure with a flexible, code-based approach to data integration.

4,898
MIT

Alternative to: Segment

Flipt logo

Flipt

A feature flag platform that integrates with Git workflows, enabling developers to manage features directly in their codebase.

4,868
GPL-3.0

Alternative to: Tggl

Kimai logo

Kimai

Open-source time tracking solution for businesses of all sizes. Manage projects, track billable hours, and generate insightful reports.

4,863
AGPL-3.0

Alternative to: Toggl

Frappe Books logo

Frappe Books

A user-friendly desktop accounting software that helps businesses manage invoices, track expenses, and handle bookkeeping with a modern interface.

4,860
AGPL-3.0

Alternative to: Quickbooks

Statamic logo

Statamic

A flat-file CMS that combines simplicity and flexibility, empowering developers to build custom websites without database complexity.

4,860
Other

Alternative to: WordPress

ACI.dev logo

ACI.dev

Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server

4,824
Apache-2.0

Alternative to: Pipedream

VoiceInk logo

VoiceInk

Convert speech to text instantly with advanced AI voice recognition. 100% private, offline capable, supports 100+ languages. Works across all Mac applications.

4,788
Other

Alternative to: Wispr Flow

Baserow logo

Baserow

Open-source no-code platform for creating databases, applications, and workflows. Self-host or use cloud. GDPR, HIPAA, SOC 2 compliant with unlimited scalability.

4,758
Other

Alternative to: Airtable

/dev/push logo

/dev/push

Open source deployment platform that deploys apps directly from GitHub with zero-downtime, real-time logs, preview URLs, and support for Python, Node.js frameworks.

4,740
MIT

Alternative to: Vercel

Ueli logo

Ueli

A keyboard-driven launcher that helps you quickly find and open applications, files, and bookmarks across Windows, macOS, and Linux

4,575
MIT

Alternative to: Raycast

Cerbos logo

Cerbos

A scalable authorization layer that provides fine-grained access control through externalized policies, enabling secure and flexible permissions management.

4,524
Apache-2.0

Alternative to: Auth0

Campfire logo

Campfire

Install your own group chat system with @mentions, DMs, and mobile support. One-time purchase, no monthly fees. Includes full source code for customization.

4,465
MIT

Alternative to: Microsoft Teams

Fider logo

Fider

A self-hosted community feedback tool that helps organizations gather, discuss, and prioritize user suggestions and feature requests.

4,451
AGPL-3.0

Alternative to: Featurebase

CrateDB logo

CrateDB

Distributed SQL database designed for high-speed ingestion and complex queries on massive datasets, ideal for IoT and time-series data.

4,417
Apache-2.0

Alternative to: Snowflake

Logfire logo

Logfire

Logfire offers intuitive observability tools for Python applications, combining logs, profiling, and telemetry in one platform.

4,409
MIT

Alternative to: DataDog

Wakapi logo

Wakapi

Open-source, self-hosted time tracking solution for developers. Analyze coding habits, improve productivity, and visualize progress.

4,393
MIT

Alternative to: Toggl

Memgraph logo

Memgraph

Memgraph is a scalable, in-memory graph database solution offering high-performance computing and Neo4j compatibility.

4,313
Other

Alternative to: MongoDB

Easy!Appointments logo

Easy!Appointments

Self-hosted appointment scheduling solution with Google Calendar sync, customizable workflows, and no monthly fees. Perfect for healthcare, salons, and service businesses.

4,298
GPL-3.0

Alternative to: Calendly

Garage logo

Garage

Self-contained distributed object storage with S3 API compatibility. Runs on minimal hardware, replicates data across 3 zones for maximum resilience.

4,285
AGPL-3.0

Alternative to: Amazon S3

Drupal logo

Drupal

A flexible and extensible content management system for creating dynamic websites and digital experiences

4,280
Other

Alternative to: WordPress

Forgejo logo

Forgejo

Self-hosted software forge offering GitHub-like features with minimal resources. Easy installation, low maintenance, and 100% free software for secure project management.

4,261
Other

Alternative to: GitHub