Open Source Projects tagged "Hacktoberfest"
A curated collection of the best open source projects tagged "Hacktoberfest". Each listing includes a website screenshot along with a detailed review of its features.
Multi-channel notification infrastructure for apps
Stars
40,180Last commit
1 hour agoLicense
Unknown
Open-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.
Open Source Alternative to:
Structured control layer for customer-facing AI agents
Stars
18,306Last commit
1 day agoLicense
Apache-2.0
A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale.
Open Source Alternative to:
Open-source localization platform for multilingual apps
Stars
4,138Last commit
6 hours agoLicense
Apache-2.0
Manage app translations with in-context editing, AI translation, and collaborative tools. Self-hostable and free to start.
Open Source Alternative to:
Continuous compliance automation for SOC 2, ISO 27001 & more
Stars
Stars growing over the last 30 days333Last commit
2 hours agoLicense
Apache-2.0
Automates evidence collection, control tracking, and audit reporting across SOC 2, ISO 27001, NIST 800-53, GDPR, and 12+ other frameworks in one platform.
Open Source Alternative to:
Collaborative whiteboard with a hand-drawn aesthetic
Stars
134,327Last commit
4 hours agoLicense
MIT
Virtual whiteboard for sketching diagrams, flowcharts, and wireframes with a distinctive hand-drawn look. Real-time collaboration built in.
Open Source Alternative to:
Local control smart home automation with privacy first
Stars
91,632Last commit
1 hour agoLicense
Apache-2.0
Open source home automation platform supporting 1000+ devices with local control, powerful automations, custom dashboards, and voice assistant. No cloud required.
Open Source Alternative to:
Unified observability for metrics, logs, traces, and more
Stars
77,404Last commit
1 hour agoLicense
AGPL-3.0
Grafana unifies metrics, logs, traces, profiles, and business data into one OpenTelemetry-native platform with AI-assisted root cause analysis and adaptive cost controls.
Open Source Alternative to:
Build a custom CRM without the proprietary lock-in
Stars
Stars growing over the last 30 days59,038Last commit
2 hours agoLicense
AGPL-3.0
Self-hostable CRM built for technical teams who need a fully customizable, extensible platform without vendor lock-in or proprietary tooling.
Open Source Alternative to:
Headless CMS with REST and GraphQL APIs out of the box
Stars
73,355Last commit
2 hours agoLicense
MIT
TypeScript headless CMS that generates REST and GraphQL APIs from your content model, with a no-code builder, plugin system, and full self-hosting support.
Open Source Alternative to:
Open source metrics collection, storage, and alerting
Stars
66,679Last commit
1 hour agoLicense
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:
Transform databases into intuitive spreadsheets instantly
Stars
65,315Last commit
2 hours agoLicense
AGPL-3.0
Convert any database into a no-code platform with spreadsheet interface. Connect PostgreSQL/MySQL or use hosted database. Scale to millions of rows effortlessly.
Open Source Alternative to:
Open-source backend platform for rapid app development
Stars
57,746Last commit
2 hours agoLicense
BSD-3-Clause
Open-source development platform with built-in backend infrastructure, web hosting, and security features. Scale applications using your preferred programming languages.
Open Source Alternative to:
Self-hosted media server for movies, music, and more
Stars
58,341Last commit
1 day agoLicense
GPL-2.0
Free, open source media server that lets you collect, manage, and stream your personal library to any device, with no fees, tracking, or vendor lock-in.
Open Source Alternative to:
Self-hosted Git service for seamless collaboration
Stars
58,616Last commit
5 hours agoLicense
MIT
A lightweight, fast, and customizable Git service that simplifies code hosting and collaboration for teams of all sizes.
Open Source Alternative to:
Open source payment orchestrator for global transactions
Stars
Stars growing over the last 30 days45,392Last commit
2 hours agoLicense
Apache-2.0
A unified payment infrastructure that connects multiple payment processors through a single API integration, enabling global payment processing
Open Source Alternative to:
Self-hosted team messaging with voice, video, and AI
Stars
46,304Last commit
1 hour agoLicense
MIT
Open source communication platform combining messaging, voice, video, and AI for organizations that need full data control, air-gapped deployments, and zero-trust security.
Open Source Alternative to:
Lightning-fast analytics for massive datasets
Stars
50,525Last commit
1 hour agoLicense
Apache-2.0
High-performance columnar OLAP database system for real-time analytics on big data, with SQL support and linear scalability.
Open Source Alternative to:
Effortlessly organize your digital documents
Stars
46,973Last commit
5 hours agoLicense
GPL-3.0
A powerful open-source solution for managing, organizing, and searching your digital documents with ease and efficiency.
Open Source Alternative to:
Model-agnostic platform for building intelligent AI agents
Stars
42,850Last commit
6 hours agoLicense
Apache-2.0
Open-source platform that enables developers to create, deploy and monitor AI agents with built-in memory, knowledge integration, and external tool connectivity.
Open Source Alternative to:
Build internal tools rapidly without coding
Stars
41,115Last commit
4 hours agoLicense
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:
Build AI copilots for your product in hours, not months
Stars
38,159Last commit
1 hour agoLicense
MIT
Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.
Open Source Alternative to:
Open-source coding agent for your IDE and terminal
Stars
36,286Last commit
1 day agoLicense
Apache-2.0
Runs source-controlled AI checks on every pull request, enforcing your engineering standards as native GitHub status checks with suggested fixes.
Open Source Alternative to:
Empower your team to build custom internal tools rapidly
Stars
41,101Last commit
1 hour agoLicense
Apache-2.0
Low-code platform for creating powerful internal tools and dashboards with drag-and-drop ease, robust integrations, and customizable workflows.
Open Source Alternative to:
Secure collaboration platform for mission-critical work
Stars
39,400Last commit
2 hours agoLicense
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:
Real-time error tracking and performance monitoring
Stars
45,621Last commit
1 hour agoLicense
Unknown
Detect, diagnose, and resolve software issues quickly with powerful error tracking, performance monitoring, and release management.
Open Source Alternative to:
Scale-out SQL database for real-time analytics
Stars
40,665Last commit
11 hours agoLicense
Apache-2.0
Distributed SQL database combining OLTP and OLAP capabilities, offering horizontal scalability, high availability, and real-time analytics.
Open Source Alternative to:
Fast, collaborative wiki for teams who need organized docs
Stars
41,009Last commit
6 hours agoLicense
BUSL-1.1
Team knowledge base with real-time collaboration, AI-powered search, Slack integration, and self-hosting support for internal docs and wikis.
Open Source Alternative to:
Secure cloud collaboration platform for organizations
Stars
37,206Last commit
4 hours agoLicense
AGPL-3.0
Nextcloud offers on-premises file sync, sharing and collaboration platform with advanced security and privacy features.
Open Source Alternative to:
Build data-rich React apps with ease and flexibility
Stars
35,926Last commit
1 month agoLicense
MIT
A React-based framework for rapid development of internal tools, admin panels, and dashboards with powerful data handling capabilities.
Open Source Alternative to:
Advanced vulnerability detection and management platform
Stars
32,194Last commit
12 hours agoLicense
MIT
Monitor infrastructure for exploitable vulnerabilities with real-time detection, automated workflows, and zero false positives.
Open Source Alternative to:
End-to-end open source software delivery platform
Stars
38,649Last commit
1 day agoLicense
Apache-2.0
Streamline code delivery with an open-source CI/CD platform featuring Git integration, fast pipelines, and hosted development environments.
Open Source Alternative to:
Declarative workflow orchestration for data, AI, and infra
Stars
Stars growing over the last 30 days29,932Last commit
1 hour agoLicense
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:
Visual React editor with real-time code updates
Stars
26,971Last commit
2 months agoLicense
Apache-2.0
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.
Open Source Alternative to:
Cost-effective log aggregation that indexes labels, not full text
Stars
29,047Last commit
1 hour agoLicense
AGPL-3.0
Horizontally scalable, multi-tenant log aggregation system that stores and queries logs using label-based indexing instead of full-text indexing, keeping storage costs low.
Open Source Alternative to:
Open source Laravel eCommerce platform for modern businesses
Stars
28,270Last commit
9 hours agoLicense
MIT
A flexible eCommerce platform built on Laravel that enables businesses to create marketplaces, mobile apps, and headless commerce solutions
Open Source Alternative to:
Connect, query, visualize, and share your data
Stars
28,841Last commit
6 days agoLicense
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:
Cross-platform, secure password manager
Stars
29,352Last commit
6 hours agoLicense
GPL-3.0
KeePassXC is an open-source password manager that securely stores and manages sensitive information across Windows, macOS, and Linux.
Open Source Alternative to:
Create 2D and 3D games without coding, powered by AI assistance
Stars
Stars growing over the last 30 days27,808Last commit
5 hours agoLicense
Unknown
Free, open-source game engine with visual event system, AI tutor, and one-click publishing to Steam, iOS, Android, and web platforms.
Open Source Alternative to:
Watch YouTube without Google tracking you or showing ads
Stars
Stars growing over the last 30 days25,582Last commit
3 days agoLicense
AGPL-3.0
Open source front-end for YouTube that strips out ads, tracking, and algorithmic distractions while letting you subscribe to channels and manage playlists.
Open Source Alternative to:
Self-hosted CRM for enhanced business relationships
Stars
24,041Last commit
9 hours agoLicense
MIT
Open source customer relationship management platform with sales tracking, marketing automation, and customizable workflows for businesses of all sizes.
Open Source Alternative to:
Full-featured media center for your TV and beyond
Stars
21,362Last commit
3 hours agoLicense
Unknown
Plays videos, music, TV shows, photos, and games from a single interface, with live TV, PVR recording, and broad format support across devices.
Open Source Alternative to:
Collect, transform, and route logs and metrics in one tool
Stars
22,749Last commit
1 hour agoLicense
MPL-2.0
Rust-built observability pipeline tool that collects, transforms, and routes logs and metrics across 47 sources and 62 sinks with no runtime dependencies.
Open Source Alternative to:
CodeRabbit – The leading AI Code Review platform. Ship better quality code in 50% less time, with 90% fewer bugs.
Stellar Hosted
Windshift
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