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Open Source Projects using Testing Library

A curated collection of the 200 best open source software using Testing Library. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Favicon of Temps

Temps

One self-hosted binary replaces Vercel, Sentry, and analytics tools

  • Stars

    832

  • Last commit

    45 minutes ago

  • License

    Apache-2.0
Self-hosted platform for small dev teams combining deployments, error tracking, analytics, session replay, uptime monitoring, and managed databases in one dashboard.

Open Source Alternative to:

Favicon of Vercel
Vercel
Favicon of ByteChef

ByteChef

AI
Build AI agents and automate complex workflows seamlessly

  • Stars

    1,018

  • Last commit

    4 hours ago

  • License

    Apache-2.0
Create intelligent automation workflows combining AI agents with your favorite apps and services. Connect, automate, and scale your operations without complex coding.

Open Source Alternative to:

Favicon of n8n
n8n
Favicon of Freeter

Freeter

Your personal workspace organizer for maximum productivity

  • Stars

    1,024

  • Last commit

    5 months ago

  • License

    GPL-3.0
Organize projects, tasks, and resources in customizable workspaces. Boost productivity with a unified interface for all your work.

Open Source Alternative to:

Favicon of Monday
Monday
Favicon of VoiceTypr

VoiceTypr

AI
Offline voice dictation that types into any app

  • Stars

    730

  • Last commit

    21 hours ago

  • License

    AGPL-3.0
Dictate into any app on Mac or Windows using on-device AI models. One-time purchase, 99+ languages, no subscription required.

Open Source Alternative to:

Favicon of Wispr Flow
Wispr Flow
Favicon of Twake Drive

Twake Drive

Secure open source file storage with end-to-end encryption

  • Stars

    988

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Open source encrypted data storage solution offering secure file sharing, collaboration tools, and on-premises deployment for professional teams.

Open Source Alternative to:

Favicon of Google Drive
Google Drive
Favicon of LostPixel

LostPixel

Visual regression testing made effortless

  • Stars

    1,681

  • Last commit

    6 months ago

  • License

    MIT
Automated visual testing tool that detects UI changes, ensures consistency, and accelerates development workflows.

Open Source Alternative to:

Favicon of Chromatic
Chromatic
Favicon of OpenPanel

OpenPanel

Simplify server management with an intuitive interface

  • Stars

    751

  • Last commit

    5 hours ago

  • License

    MIT
A user-friendly, open-source control panel for effortless server administration, designed for both beginners and experts.

Open Source Alternative to:

Favicon of cPanel
cPanel
Favicon of Frontman

Frontman

AI
AI coding agent that sees your live app and edits code

  • Stars

    714

  • Last commit

    28 minutes ago

  • License

    Apache-2.0
Open-source AI coding agent that runs in your browser, sees your live DOM and app state, and makes real code edits from plain English descriptions.

Open Source Alternative to:

Favicon of Lovable
Lovable
Favicon of Featurevisor

Featurevisor

Feature management with GitOps for developers

  • Stars

    812

  • Last commit

    1 month ago

  • License

    MIT
Featurevisor is an open-source tool for managing feature flags, experiments, and remote configuration directly from your Git repository.

Open Source Alternative to:

Favicon of LaunchDarkly
LaunchDarkly
Favicon of Monetr

Monetr

Take control of your finances, paycheck by paycheck

  • Stars

    690

  • Last commit

    20 minutes ago

  • License

    FSL-1.1-MIT
Manage your money confidently with monetr, putting aside what you need and spending what you want

Open Source Alternative to:

Favicon of Splitwise
Splitwise
Favicon of PearPass

PearPass

Complete password control, zero cloud dependency

  • Stars

    540

  • Last commit

    2 months ago

  • License

    Apache-2.0
Open-source password manager with peer-to-peer syncing, local storage, and end-to-end encryption. No cloud servers, complete privacy control across devices.

Open Source Alternative to:

Favicon of LastPass
LastPass
Favicon of Ever Teams

Ever Teams

Real-time work and project management platform

  • Stars

    589

  • Last commit

    4 hours ago

  • License

    AGPL-3.0
Ever Teams offers an all-in-one solution for work management, time tracking, and team collaboration with integrations for popular tools.

Open Source Alternative to:

Favicon of Linear
Linear
Favicon of Busabase

Busabase

AI
A verified workspace where AI agents store and build knowledge

  • Stars

    444

  • Last commit

    2 days ago

  • License

    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:

Favicon of Notion
Notion
Favicon of Vemetric

Vemetric

Simple, powerful web & product analytics for user insights

  • Stars

    395

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Privacy-focused analytics platform combining web and product insights. Track user journeys, create funnels, and understand behavior with GDPR compliance and no cookies by default.

Open Source Alternative to:

Favicon of Google Analytics
Google Analytics
Favicon of Windshift

Windshift

Self-hosted project management with boards and test tracking

  • Stars

    331

  • Last commit

    24 hours ago

  • License

    AGPL-3.0
Self-hosted, open-source project management tool with boards, milestones, portals, time tracking, and test management on your own infrastructure.

Open Source Alternative to:

Favicon of Linear
Linear
Favicon of Midori Browser

Midori Browser

Fast, secure, and privacy-focused web browsing

  • Stars

    408

  • Last commit

    4 days ago

  • License

    MPL-2.0
Midori Browser is a lightweight, fast, and secure browser that protects users' privacy, available for Windows, Linux, and Android.

Open Source Alternative to:

Favicon of Firefox
Firefox
Favicon of Roomote

Roomote

AI
Self-hosted AI coding agent that opens real PRs

  • Stars

    286

  • Last commit

    6 hours ago

  • License

    FCL-1.0
Source-available, self-hosted AI coding agent that connects to your repo, tools, and chat to investigate issues and open reviewable PRs on your own infrastructure.

Open Source Alternative to:

Favicon of Codex
Codex
Favicon of Stormkit

Stormkit

Deploy web apps with automated CI/CD and full infrastructure control

  • Stars

    266

  • Last commit

    4 hours ago

  • License

    GPL-3.0
Self-hosted platform for web applications offering automated CI/CD pipelines, multiple environments, and Git integration - with 47% infrastructure cost savings.

Open Source Alternative to:

Favicon of Vercel
Vercel
Favicon of Darkwrite

Darkwrite

Distraction-free note-taking with powerful features

  • Stars

    317

  • Last commit

    1 day ago

  • License

    AGPL-3.0
A customizable, offline-first note editor that lets you format text, create lists, add images, and export to HTML - all while maintaining your privacy.

Open Source Alternative to:

Favicon of Notion
Notion
Favicon of Orbital

Orbital

Connect APIs, databases, and streams without glue code

  • Stars

    360

  • Last commit

    4 months ago

  • License

    Unknown
Automated data integration platform that connects APIs, databases, and event streams using semantic schemas. Deploy secure integrations in minutes with Git-based workflows.

Open Source Alternative to:

Favicon of Kong
Kong
Favicon of Twake Chat

Twake Chat

Secure open source messaging for professional teams

  • Stars

    170

  • Last commit

    14 hours ago

  • License

    AGPL-3.0
Free Matrix-based messenger with end-to-end encryption, multi-platform bridges, and on-premise deployment. Connect across 30+ networks securely.

Open Source Alternative to:

Favicon of Microsoft Teams
Microsoft Teams
Favicon of Abby

Abby

Type-safe feature flags and remote config for developers

  • Stars

    166

  • Last commit

    1 year ago

  • License

    AGPL-3.0
Abby offers open-source, fully typed feature flagging and remote configuration for React and Next.js, with multi-environment testing and debugging tools.

Open Source Alternative to:

Favicon of LaunchDarkly
LaunchDarkly
Favicon of UserTourKit

UserTourKit

Lightweight, accessible product tours built for React developers

  • Stars

    68

  • Last commit

    9 days ago

  • License

    MIT
Headless React tour library with WCAG 2.1 AA accessibility, TypeScript support, and pre-styled components. Under 8KB gzipped with full customization control.

Open Source Alternative to:

Favicon of Userflow
Userflow
Favicon of Warpdrive

Warpdrive

Self-hosted CRM for business development teams

  • Stars

    75

  • Last commit

    8 days ago

  • License

    MIT
Pipeline management, deal workspace, contacts, and two-way Gmail for BD teams. Runs on your own infrastructure, MIT licensed, no per-seat fees.

Open Source Alternative to:

Favicon of Attio
Attio
Favicon of Wraps

Wraps

Code-first email platform that deploys to your AWS

  • Stars

    63

  • Last commit

    23 hours ago

  • License

    AGPL-3.0
Build email templates as React components and automations in TypeScript. Deploy to your AWS account with SES integration. Marketing teams edit content without code.

Open Source Alternative to:

Favicon of Resend
Resend
Favicon of Brace.to

Brace.to

Securely save and access your favorite links across devices

  • Stars

    107

  • Last commit

    6 months ago

  • License

    MIT
A privacy-focused bookmark manager that encrypts your saved links, allowing you to access them anytime, anywhere, on any device with complete control.

Open Source Alternative to:

Favicon of Pocket
Pocket
Favicon of BugPin

BugPin

Self-hosted visual bug reporting with screenshot annotation

  • Stars

    44

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Embeds a lightweight widget into web apps so users can capture screenshots, annotate issues, and submit reports with console logs and browser metadata included.

Open Source Alternative to:

Favicon of Markup
Markup
Favicon of Justnote

Justnote

Privacy-focused note-taking made simple and fast

  • Stars

    68

  • Last commit

    8 months ago

  • License

    GPL-2.0
Justnote is a secure note-taking app that lets you easily create and sync notes across devices while maintaining full control of your data.

Open Source Alternative to:

Favicon of Notion
Notion
Favicon of Reflet

Reflet

Turn user feedback into features that matter

  • Stars

    39

  • Last commit

    2 days ago

  • License

    SSPL-1.0
Collect feedback, prioritize with AI-powered voting, and share transparent roadmaps. Build products users love with automated triage and seamless integration.

Open Source Alternative to:

Favicon of Featurebase
Featurebase
Favicon of itsnotes

itsnotes

Self-hosted sticky notes with better organization

  • Stars

    35

  • Last commit

    12 days ago

  • License

    MIT
A self-hosted, open-source note-taking app that keeps the Google Keep sticky-note feel while adding folders, timelines, list views, and import support.

Open Source Alternative to:

Favicon of Google Keep
Google Keep
Favicon of Sayr

Sayr

Bridge internal workflows with public collaboration

  • Stars

    29

  • Last commit

    2 days ago

  • License

    Unknown
Source-available project management platform with dual views - internal team workspace and public portal for user feedback, voting, and progress tracking.

Open Source Alternative to:

Favicon of Linear
Linear
Favicon of Spanlens

Spanlens

AI
LLM observability: cost, latency, and traces in one place

  • Stars

    13

  • Last commit

    6 days ago

  • License

    MIT
Drop-in observability platform for OpenAI, Anthropic, and Gemini that logs every request, tracks costs, traces agent workflows, and flags anomalies and PII.

Open Source Alternative to:

Favicon of LangSmith
LangSmith
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