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Open Source Projects using Prettier

A curated collection of the 411 best open source software using Prettier. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Favicon of GrowthBook

GrowthBook

Open-source A/B testing and feature flagging platform

  • Stars

    8,139

  • Last commit

    6 hours ago

  • License

    MIT
Powerful, developer-friendly experimentation tool for data-driven product decisions. Seamless integration, real-time insights, and flexible deployment.

Open Source Alternative to:

Favicon of LaunchDarkly
LaunchDarkly
Favicon of Coroot

Coroot

Full-stack observability without code changes

  • Stars

    7,878

  • Last commit

    1 day ago

  • License

    Apache-2.0
Coroot simplifies system monitoring by providing metrics, logs, traces, and profiling with zero instrumentation, leveraging eBPF technology.

Open Source Alternative to:

Favicon of Splunk
Splunk
Favicon of OpenSign

OpenSign

Secure, customizable e-signatures for modern businesses

  • Stars

    6,878

  • Last commit

    14 hours ago

  • License

    AGPL-3.0
A powerful, open-source e-signature solution offering customization, integration, and enhanced security for businesses of all sizes.

Open Source Alternative to:

Favicon of DocuSign
DocuSign
Favicon of Expensify

Expensify

Simplify expense management for businesses of all sizes

  • Stars

    5,008

  • Last commit

    6 hours ago

  • License

    MIT
Automate expense reporting, reimbursements, and corporate card management with real-time data sync and powerful integrations.
Favicon of OneUptime

OneUptime

Comprehensive monitoring and incident management platform

  • Stars

    7,481

  • Last commit

    6 hours ago

  • License

    Apache-2.0
All-in-one solution for uptime monitoring, incident management, and status pages to keep your services running smoothly

Open Source Alternative to:

Favicon of Opsgenie
Opsgenie
Favicon of Woodpecker CI

Woodpecker CI

Simple yet powerful CI/CD engine with great extensibility

  • Stars

    7,719

  • Last commit

    18 hours ago

  • License

    Apache-2.0
Open-source CI/CD platform using Docker containers for pipeline execution. Create multiple workflows, extend with plugins, and enjoy free lifetime access.

Open Source Alternative to:

Favicon of GitHub Actions
GitHub Actions
Favicon of OpenWispr

OpenWispr

AI
Voice-to-text that works offline, privately, on any app

  • Stars

    5,562

  • Last commit

    7 hours ago

  • License

    MIT
Dictation app powered by OpenAI Whisper and NVIDIA Parakeet. Runs locally on macOS, Windows, and Linux with zero data retention and 100+ language support.

Open Source Alternative to:

Favicon of Wispr Flow
Wispr Flow
Favicon of Webiny

Webiny

Open-source serverless CMS for modern web projects

  • Stars

    8,031

  • Last commit

    9 hours ago

  • License

    MIT
A powerful, scalable platform for building custom websites and apps with serverless architecture, offering flexibility and cost-efficiency.

Open Source Alternative to:

Favicon of WordPress
WordPress
Favicon of Plasmic

Plasmic

Visual app builder that integrates with your existing codebase

  • Stars

    6,961

  • Last commit

    18 hours ago

  • License

    MIT
Open-source visual editor for building websites and web apps. Connect to any data source, design custom UIs, and ship production React code without leaving your stack.

Open Source Alternative to:

Favicon of Framer
Framer
Favicon of Mockoon

Mockoon

Effortless API mocking for seamless development

  • Stars

    8,372

  • Last commit

    14 hours ago

  • License

    MIT
Create, run, and share mock REST APIs without coding. Boost productivity with an intuitive interface and powerful features.

Open Source Alternative to:

Favicon of Postman
Postman
Favicon of Emdash

Emdash

AI
Dashboard for running multiple coding agents in parallel

  • Stars

    5,446

  • Last commit

    7 hours ago

  • License

    Apache-2.0
Desktop app that runs 25+ coding agents simultaneously, each isolated in its own Git worktree, so you can orchestrate code changes without switching tools.

Open Source Alternative to:

Favicon of Codex
Codex
Favicon of Fonoster

Fonoster

Open-source cloud communications platform for developers

  • Stars

    8,079

  • Last commit

    1 day ago

  • License

    MIT
Build and deploy powerful voice and messaging applications with ease using Fonoster's flexible, scalable, and developer-friendly platform.

Open Source Alternative to:

Favicon of Twilio
Twilio
Favicon of Tuta

Tuta

Secure email, calendar and contacts with end-to-end encryption

  • Stars

    7,863

  • Last commit

    7 hours ago

  • License

    GPL-3.0
Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.

Open Source Alternative to:

Favicon of Gmail
Gmail
Favicon of Helicone

Helicone

AI
Build reliable AI apps with comprehensive observability

  • Stars

    6,084

  • Last commit

    3 days ago

  • License

    Apache-2.0
Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of Evidence

Evidence

Transform SQL into beautiful data stories

  • Stars

    6,862

  • Last commit

    9 hours ago

  • License

    MIT
Create data-driven websites and reports using SQL and Markdown, with automatic visualizations and interactive elements.

Open Source Alternative to:

Favicon of Power BI
Power BI
Favicon of Mike

Mike

AI
Open-source legal AI that law firms control and extend

  • Stars

    4,135

  • Last commit

    14 hours ago

  • License

    AGPL-3.0
Self-hostable alternative to Harvey and Legora with document analysis, contract drafting, tabular review, and reusable workflows. Zero licensing costs, full data control.

Open Source Alternative to:

Favicon of Harvey
Harvey
Favicon of Rivet

Rivet

Build stateful backends with in-memory actors

  • Stars

    6,069

  • Last commit

    7 hours ago

  • License

    Apache-2.0
Open-source infrastructure for long-lived, in-memory processes called Actors. Combines state and compute with sub-millisecond latency, realtime capabilities, and horizontal scaling.

Open Source Alternative to:

Favicon of Cloudflare Workers
Cloudflare Workers
Favicon of Lingo.dev

Lingo.dev

AI
Automated translations that scale with your code and commits

  • Stars

    5,405

  • Last commit

    10 hours ago

  • License

    Apache-2.0
Transform your app into a global product with AI-powered localization that integrates directly into your development workflow. Supports 83+ languages with Git-native automation.

Open Source Alternative to:

Favicon of Crowdin
Crowdin
Favicon of CloudQuery

CloudQuery

Sync and transform data from any source to any destination

  • Stars

    6,484

  • Last commit

    1 day ago

  • License

    MPL-2.0
CloudQuery is an open-source ELT platform that enables easy data integration from hundreds of cloud and security tools to any destination.

Open Source Alternative to:

Favicon of Snowflake
Snowflake
Favicon of Cosmos Server

Cosmos Server

Self-hosted cloud platform with automated security

  • Stars

    6,121

  • Last commit

    1 day ago

  • License

    Unknown
Complete self-hosting solution with automated maintenance, Smart-Shield protection, anti-DDoS, SSO authentication, and VPN access for secure private cloud management.

Open Source Alternative to:

Favicon of Umbrel
Umbrel
Favicon of Requestly

Requestly

Intercept, modify, and debug HTTP(S) requests effortlessly

  • Stars

    6,750

  • Last commit

    14 hours ago

  • License

    AGPL-3.0
A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing

Open Source Alternative to:

Favicon of Postman
Postman
Favicon of Workadventure

Workadventure

Virtual office platform for engaging remote collaboration

  • Stars

    5,722

  • Last commit

    8 hours ago

  • License

    Unknown
Create customizable virtual workspaces for remote teams to interact naturally, host events, and collaborate through spontaneous conversations and scheduled meetings.

Open Source Alternative to:

Favicon of Microsoft Teams
Microsoft Teams
Favicon of Lightdash

Lightdash

Open-source BI for modern data teams

  • Stars

    6,056

  • Last commit

    6 hours ago

  • License

    MIT
Self-serve analytics platform that transforms dbt models into interactive dashboards, enabling data-driven decisions across organizations.

Open Source Alternative to:

Favicon of Power BI
Power BI
Favicon of 5ire

5ire

AI
Smart desktop AI assistant with powerful local knowledge features

  • Stars

    5,338

  • Last commit

    1 month ago

  • License

    Unknown
Cross-platform desktop AI assistant supporting multiple providers, local knowledge base, and custom prompts. Integrates MCP protocol for enhanced AI tool capabilities.

Open Source Alternative to:

Favicon of Claude
Claude
Favicon of Kan

Kan

Open source kanban boards with unlimited everything

  • Stars

    5,359

  • Last commit

    7 days ago

  • License

    AGPL-3.0
Free kanban project management with unlimited boards, lists, and cards. Import Trello boards, collaborate with teams, and self-host for complete control.

Open Source Alternative to:

Favicon of Jira
Jira
Favicon of Flagsmith

Flagsmith

Feature flags and remote config for rapid deployment

  • Stars

    6,519

  • Last commit

    11 hours ago

  • License

    BSD-3-Clause
Powerful feature management platform for seamless software releases, A/B testing, and personalized user experiences.

Open Source Alternative to:

Favicon of LaunchDarkly
LaunchDarkly
Favicon of Apache Pinot

Apache Pinot

Distributed OLAP database for real-time analytics at scale

  • Stars

    6,122

  • Last commit

    6 hours ago

  • License

    Apache-2.0
Sub-second SQL queries on fresh streaming data at petabyte scale, built for high-concurrency user-facing apps and AI agent backends.

Open Source Alternative to:

Favicon of Splunk
Splunk
Favicon of Standard Notes

Standard Notes

Secure, encrypted notes for your digital life

  • Stars

    6,591

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Cross-platform note-taking app with end-to-end encryption, offline access, and powerful organization features for privacy-conscious users.

Open Source Alternative to:

Favicon of Obsidian
Obsidian
Favicon of Inngest

Inngest

Effortless event-driven workflows for modern applications

  • Stars

    5,742

  • Last commit

    6 hours ago

  • License

    SSPL-1.0
Simplify backend processes with event-driven functions, seamless integrations, and powerful debugging tools for developers.

Open Source Alternative to:

Favicon of Kafka
Kafka
Favicon of Kener

Kener

Deploy a professional status page in minutes, no coding required

  • Stars

    5,116

  • Last commit

    17 days ago

  • License

    MIT
Free, open-source status page and uptime monitor with Docker deployment. Track 11 service types, manage incidents, schedule maintenance, and notify subscribers instantly.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of ACI.dev

ACI.dev

AI
Build reliable AI agents with unified tool integration

  • Stars

    4,880

  • Last commit

    3 months ago

  • License

    Apache-2.0
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

Open Source Alternative to:

Favicon of Pipedream
Pipedream
Favicon of Latitude

Latitude

AI
Full observability for AI agents in production

  • Stars

    4,595

  • Last commit

    8 hours ago

  • License

    MIT
Open-source platform for monitoring AI agents: captures traces, surfaces failure patterns, alerts on issues, and helps you verify fixes with automated evals.

Open Source Alternative to:

Favicon of LangSmith
LangSmith
Favicon of Solidus

Solidus

Flexible eCommerce platform for brands that stand out

  • Stars

    5,319

  • Last commit

    7 hours ago

  • License

    Unknown
Open-source eCommerce platform offering customization, scalability and enterprise-grade features for brands of all sizes

Open Source Alternative to:

Favicon of Shopify
Shopify
Favicon of useSend

useSend

Pay per email sent, not for contact storage

  • Stars

    4,614

  • Last commit

    26 days ago

  • License

    AGPL-3.0
Open source email platform for transactional and marketing emails. Self-host or use cloud service with transparent pricing - pay only for emails sent.

Open Source Alternative to:

Favicon of Resend
Resend
Favicon of Zammad

Zammad

Powerful helpdesk solution for streamlined customer service

  • Stars

    5,856

  • Last commit

    8 hours ago

  • License

    AGPL-3.0
Zammad is an open-source helpdesk software that centralizes customer communications and helps deliver great service experiences efficiently.

Open Source Alternative to:

Favicon of Zendesk
Zendesk
Favicon of Agenta

Agenta

AI
Build reliable LLM apps with integrated workflows

  • Stars

    4,495

  • Last commit

    7 hours ago

  • License

    MIT
Open-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.

Open Source Alternative to:

Favicon of LangSmith
LangSmith
Favicon of Mathesar

Mathesar

Spreadsheet-like interface for PostgreSQL databases

  • Stars

    5,096

  • Last commit

    1 day ago

  • License

    GPL-3.0
A self-hosted tool that provides an intuitive, spreadsheet-style interface for viewing, editing, and querying PostgreSQL databases without technical expertise.

Open Source Alternative to:

Favicon of Airtable
Airtable
Favicon of Frappe Books

Frappe Books

Modern desktop accounting made simple and free

  • Stars

    4,891

  • Last commit

    3 months ago

  • License

    AGPL-3.0
A user-friendly desktop accounting software that helps businesses manage invoices, track expenses, and handle bookkeeping with a modern interface.

Open Source Alternative to:

Favicon of YNAB
YNAB
Favicon of Rallly

Rallly

Effortless group scheduling for seamless collaboration

  • Stars

    5,217

  • Last commit

    7 hours ago

  • License

    AGPL-3.0
A user-friendly, open-source tool for coordinating events and meetings without the hassle of back-and-forth emails or messages.

Open Source Alternative to:

Favicon of Calendly
Calendly
Favicon of Colanode

Colanode

Self-hosted team workspace with chat, docs, and databases

  • Stars

    5,019

  • Last commit

    5 months ago

  • License

    Apache-2.0
Local-first collaboration platform combining real-time chat, rich text pages, databases, and file management in a single self-hostable workspace.

Open Source Alternative to:

Favicon of Notion
Notion
Favicon of Jitsu

Jitsu

Open-source data integration for modern stacks

  • Stars

    5,038

  • Last commit

    17 hours ago

  • License

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

Open Source Alternative to:

Favicon of Segment
Segment
Favicon of Pipeshub

Pipeshub

AI
Enterprise workplace AI with data you own and control

  • Stars

    3,568

  • Last commit

    12 hours ago

  • License

    Apache-2.0
Self-hostable enterprise AI platform that unifies business data across apps, powers a knowledge graph for cited answers, and lets teams build AI agents across their stack.

Open Source Alternative to:

Favicon of Glean
Glean
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