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Open Source Projects using Bootstrap

A curated collection of the 37 best open source software using Bootstrap. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Uptime Kuma

Self-hosted uptime monitoring with a clean dashboard

  • Stars

    93,273

  • Last commit

    13 hours ago

  • License

    MIT
Monitors websites, APIs, and services with real-time alerts, a status page, and support for dozens of notification channels. Self-hosted and Docker-friendly.

Open Source Alternative to:

BetterStack

Prometheus

Open source metrics collection, storage, and alerting

  • Stars

    66,960

  • Last commit

    5 hours ago

  • License

    Apache-2.0
Pull-based monitoring system with a multi-dimensional data model, PromQL query language, built-in alerting, and a time series database built for cloud native environments.

Open Source Alternative to:

DataDog

Paperless-ngx

Effortlessly organize your digital documents

  • Stars

    47,709

  • Last commit

    9 hours ago

  • License

    GPL-3.0
A powerful open-source solution for managing, organizing, and searching your digital documents with ease and efficiency.

Open Source Alternative to:

Docuware

ToolJet

Build internal tools rapidly without coding

  • Stars

    41,196

  • Last commit

    5 hours ago

  • License

    AGPL-3.0
Open-source low-code platform for creating custom internal tools, dashboards, and admin panels with a drag-and-drop interface

Open Source Alternative to:

Retool

Mattermost

Secure collaboration platform for mission-critical work

  • Stars

    39,532

  • Last commit

    5 hours ago

  • License

    Unknown
Mattermost provides a flexible, open-source platform for secure team collaboration, designed for organizations with strict security and privacy requirements.

Open Source Alternative to:

Microsoft Teams

Refine

Build data-rich React apps with ease and flexibility

  • Stars

    35,997

  • Last commit

    2 months ago

  • License

    MIT
A React-based framework for rapid development of internal tools, admin panels, and dashboards with powerful data handling capabilities.

Open Source Alternative to:

Retool

Kestra

Declarative workflow orchestration for data, AI, and infra

  • Stars

    30,148

  • Last commit

    5 hours ago

  • License

    Apache-2.0
YAML-based orchestration platform with 1400+ plugins for running data pipelines, AI workflows, and infrastructure automation across teams at scale.

Open Source Alternative to:

AWS Step Functions

Anki

Spaced repetition flashcards that remember for you

  • Stars

    32,572

  • Last commit

    18 hours ago

  • License

    Unknown
Flashcard app using spaced repetition to schedule reviews at the exact moment you're likely to forget, so you retain more with less study time.

Open Source Alternative to:

Quizlet

Redash

Connect, query, visualize, and share your data

  • Stars

    28,867

  • Last commit

    1 day ago

  • License

    BSD-2-Clause
Redash is an open-source data visualization and analytics platform that helps teams make sense of their data through SQL queries and interactive dashboards.

Open Source Alternative to:

Power BI

Authentik

Take control of your identity with a secure, flexible solution

  • Stars

    26,238

  • Last commit

    5 hours ago

  • License

    MIT
authentik is an open-source identity provider that offers self-hosted authentication, authorization, and user management for businesses of all sizes.

Open Source Alternative to:

Auth0

Firefly III

Self-hosted personal finance manager with double-entry bookkeeping

  • Stars

    25,074

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Track transactions, budgets, and accounts with a double-entry system, multi-currency support, rule engine, and REST API. Fully self-hostable.

Open Source Alternative to:

YNAB

Bitwarden

Secure password management for individuals and businesses

  • Stars

    20,574

  • Last commit

    7 hours ago

  • License

    AGPL-3.0
Bitwarden is an open source password manager that securely stores, shares, and autofills passwords across unlimited devices.

Open Source Alternative to:

1Password

Ceph

Scalable open-source distributed storage system

  • Stars

    17,200

  • Last commit

    11 hours ago

  • License

    Unknown
Ceph provides unified object, block, and file storage from a single cluster built on commodity hardware.

Open Source Alternative to:

Amazon S3

Apache Answer

Open-source Q&A platform for knowledge sharing

  • Stars

    15,710

  • Last commit

    2 days ago

  • License

    Apache-2.0
A versatile, community-driven Q&A platform that fosters collaboration and knowledge exchange within organizations and communities.

Open Source Alternative to:

Skool

Bytebase

Secure and streamline database changes with CI/CD automation

  • Stars

    14,680

  • Last commit

    5 hours ago

  • License

    MIT
Comprehensive platform for database schema migrations, security controls, and data masking with built-in review workflows and GitOps integration.

Convex

Build full-stack apps with TypeScript and real-time sync

  • Stars

    12,778

  • Last commit

    7 hours ago

  • License

    Unknown
Open-source reactive database that keeps your web and mobile apps in sync. Write everything in TypeScript with built-in auth, cron jobs, and AI integration.

Open Source Alternative to:

Supabase

PeerTube

Decentralized video platform for true digital freedom

  • Stars

    15,388

  • Last commit

    5 hours ago

  • License

    AGPL-3.0
Create your own video hosting platform with PeerTube - a free, open-source alternative to YouTube. Join 600,000+ videos across 1,000+ interconnected platforms without ads or tracking.

Open Source Alternative to:

YouTube

Grist

Flexible spreadsheets with database power

  • Stars

    12,049

  • Last commit

    7 hours ago

  • License

    Apache-2.0
A versatile data management platform combining spreadsheet simplicity with relational database capabilities for efficient data organization and analysis.

Open Source Alternative to:

Microsoft Excel

Mautic

Open source marketing automation for everyone

  • Stars

    10,938

  • Last commit

    15 hours ago

  • License

    Unknown
Mautic is a free and open source marketing automation platform that helps businesses manage leads, create campaigns, and analyze results.

Open Source Alternative to:

HubSpot

HyperDX

Full-stack observability without the enterprise price tag

  • Stars

    9,990

  • Last commit

    8 hours ago

  • License

    MIT
Open source observability platform unifying session replays, logs, traces, metrics and errors. Fast search, automatic clustering, $0.40/GB pricing.

Open Source Alternative to:

DataDog

Ghostfolio

Track, analyze, and optimize your investments effortlessly

  • Stars

    9,651

  • Last commit

    17 hours ago

  • License

    AGPL-3.0
Open-source wealth management software for tracking stocks, ETFs, and cryptocurrencies across multiple portfolios

Open Source Alternative to:

YNAB

GrowthBook

Open-source A/B testing and feature flagging platform

  • Stars

    8,566

  • Last commit

    10 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:

LaunchDarkly

Ever Gauzy

Comprehensive open-source business management platform

  • Stars

    Stars growing over the last 30 days8,695

  • Last commit

    1 day ago

  • License

    AGPL-3.0
All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations

Open Source Alternative to:

Salesforce

Mockoon

Effortless API mocking for seamless development

  • Stars

    8,471

  • Last commit

    6 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:

Postman

CryptPad

Secure collaboration with end-to-end encryption

  • Stars

    8,052

  • Last commit

    23 hours ago

  • License

    AGPL-3.0
Open-source collaboration suite offering encrypted document editing, file sharing, and team workspaces with complete privacy protection.

Open Source Alternative to:

Microsoft Word

Pixelfed

Ad-free photo sharing with privacy and federation

  • Stars

    7,138

  • Last commit

    11 hours ago

  • License

    AGPL-3.0
Decentralized photo sharing platform with chronological feeds, privacy controls, and ActivityPub federation. No ads, no algorithms, just authentic connections.

Open Source Alternative to:

Instagram

Flagsmith

Feature flags and remote config for rapid deployment

  • Stars

    6,640

  • Last commit

    13 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:

LaunchDarkly

Kimai

Effortless time tracking for teams and projects

  • Stars

    5,137

  • Last commit

    10 hours ago

  • License

    AGPL-3.0
Open-source time tracking solution for businesses of all sizes. Manage projects, track billable hours, and generate insightful reports.

Open Source Alternative to:

Clockify

Easy!Appointments

Free open-source appointment booking for any business

  • Stars

    4,480

  • Last commit

    3 days ago

  • License

    GPL-3.0
Self-hosted appointment scheduling solution with Google Calendar sync, customizable workflows, and no monthly fees. Perfect for healthcare, salons, and service businesses.

Open Source Alternative to:

Calendly

LimeSurvey

Create engaging surveys and gather valuable insights

  • Stars

    3,791

  • Last commit

    15 hours ago

  • License

    Unknown
LimeSurvey is a powerful open-source tool for creating customizable online surveys, polls, and questionnaires.

Open Source Alternative to:

Google Forms

EspoCRM

Complete customer relationship management made simple

  • Stars

    3,547

  • Last commit

    6 hours ago

  • License

    AGPL-3.0
Open-source CRM software for managing customers, companies, projects and opportunities. Intuitive interface with cloud and self-hosted options available.

Open Source Alternative to:

Salesforce

Shopware

Open source ecommerce platform for modern businesses

  • Stars

    3,468

  • Last commit

    5 hours ago

  • License

    MIT
A flexible and customizable ecommerce solution that enables businesses to build responsive online stores with advanced features and automation capabilities.

Open Source Alternative to:

Shopify

Anthias

Transform any TV into professional digital signage

  • Stars

    3,714

  • Last commit

    7 hours ago

  • License

    Unknown
Free open-source digital signage software that turns Raspberry Pi or old PCs into powerful display solutions. Manage images, videos, and web content easily.

Open Source Alternative to:

OptiSigns

Sync-in

Open-source file storage with complete data sovereignty

  • Stars

    Stars growing over the last 30 days1,953

  • Last commit

    14 hours ago

  • License

    AGPL-3.0
Secure, open-source platform for file storage, sharing, and collaboration. Host your data on your own infrastructure with full control and transparency.

Open Source Alternative to:

Google Drive

Midori Browser

Fast, secure, and privacy-focused web browsing

  • Stars

    413

  • Last commit

    11 hours 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:

Firefox

Typerelay

Turn short shortcuts into your everyday words

  • Stars

    53

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Text expander that replaces typed abbreviations with saved replies, signatures, and snippets across macOS, Windows, and Linux.

Open Source Alternative to:

Text Blaze

Tiledesk

AI
No-code platform to build AI agents and automate support

  • Stars

    15

  • Last commit

    2 days ago

  • License

    MIT
Build AI chatbots, automate customer support workflows, and connect live agents across web, WhatsApp, email, and voice with a no-code visual designer.

Open Source Alternative to:

Intercom
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