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
39,622Last commit
15 hours 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
18,256Last commit
1 month 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
4,078Last commit
20 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
292Last commit
8 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
130,125Last commit
5 days 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
90,015Last commit
4 hours 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
76,336Last commit
4 hours 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:
Headless CMS with REST and GraphQL APIs out of the box
Stars
72,984Last commit
18 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:
Build a custom CRM without the proprietary lock-in
Stars
55,225Last commit
5 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:
Open source metrics collection, storage, and alerting
Stars
65,767Last commit
18 hours 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
64,608Last commit
5 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
57,070Last commit
4 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 Git service for seamless collaboration
Stars
57,525Last commit
8 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:
Self-hosted media server for movies, music, and more
Stars
56,002Last commit
11 hours 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:
Open source payment orchestrator for global transactions
Stars
43,527Last commit
5 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
46,012Last commit
8 hours 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
49,374Last commit
4 hours 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:
Model-agnostic platform for building intelligent AI agents
Stars
41,814Last commit
4 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:
Effortlessly organize your digital documents
Stars
44,453Last commit
8 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:
Build internal tools rapidly without coding
Stars
40,625Last 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
36,919Last commit
4 hours 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
35,567Last commit
23 hours 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
40,713Last commit
15 hours 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
38,856Last commit
5 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:
Scale-out SQL database for real-time analytics
Stars
40,456Last commit
6 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:
Real-time error tracking and performance monitoring
Stars
44,587Last commit
8 hours agoLicense
Unknown
Detect, diagnose, and resolve software issues quickly with powerful error tracking, performance monitoring, and release management.
Open Source Alternative to:
Fast, collaborative wiki for teams who need organized docs
Stars
40,267Last commit
21 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
36,505Last commit
7 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
35,547Last commit
3 months 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:
End-to-end open source software delivery platform
Stars
38,055Last commit
20 hours 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:
Advanced vulnerability detection and management platform
Stars
30,631Last commit
1 day agoLicense
MIT
Monitor infrastructure for exploitable vulnerabilities with real-time detection, automated workflows, and zero false positives.
Open Source Alternative to:
Visual React editor with real-time code updates
Stars
26,527Last commit
1 month 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:
Declarative workflow orchestration for data, AI, and infra
Stars
27,871Last commit
4 hours 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:
Open source Laravel eCommerce platform for modern businesses
Stars
27,987Last commit
14 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:
Decentralized social networking for the Web3 era
Stars
29,383Last commit
3 months agoLicense
GPL-3.0
A blockchain-powered social platform offering censorship-resistant content sharing, user-owned data, and innovative monetization options.
Open Source Alternative to:
Connect, query, visualize, and share your data
Stars
28,760Last commit
3 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
28,479Last commit
9 days agoLicense
Unknown
KeePassXC is an open-source password manager that securely stores and manages sensitive information across Windows, macOS, and Linux.
Open Source Alternative to:
Self-hosted CRM for enhanced business relationships
Stars
23,695Last commit
1 day 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:
Create 2D and 3D games without coding, powered by AI assistance
Stars
25,811Last commit
16 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
22,704Last commit
4 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:
Time-series database built on top of PostgreSQL
Stars
23,385Last commit
13 hours agoLicense
Unknown
PostgreSQL extension for time-series data with automatic partitioning, up to 95% columnar compression, continuous aggregates, and ~200 native SQL functions.
Open Source Alternative to:
Build AI agents and RPA workflows without writing code
Stars
21,575Last commit
6 months agoLicense
Unknown
No-code platform for building AI agents and RPA workflows that automate repetitive business tasks across finance, HR, sales, and operations.
Open Source Alternative to:
Capture – Capture screenshots, generate PDFs, scrape content, extract metadata, and automate browsers with one API.
Capture
Stellar Hosted
Docmost