Open Source Projects using Python
A curated collection of the 332 best open source software using Python. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
Real-time analytics database for sub-second OLAP queries
Stars
14,089Last commit
11 hours agoLicense
Apache-2.0
Columnar, time-indexed analytics database built for streaming and batch data at scale, handling billions to trillions of rows with millisecond query response times.
Open Source Alternative to:
Decentralized video platform for true digital freedom
Stars
15,365Last commit
3 days agoLicense
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:
Centralize, transform, and stash your data
Stars
14,966Last commit
14 hours agoLicense
Unknown
Logstash is a free and open server-side data processing pipeline that ingests data from multiple sources, transforms it, and sends it to your desired destination.
Open Source Alternative to:
Build beautiful documentation sites with Next.js
Stars
13,410Last commit
8 hours agoLicense
MIT
A flexible Next.js framework for creating stunning documentation sites with MDX support, built-in search, and customizable components.
Open Source Alternative to:
Open source messaging with privacy and community focus
Stars
10,616Last commit
13 hours agoLicense
AGPL-3.0
Free, open-source instant messaging and VoIP platform with full Markdown support, voice/video calls, moderation tools, and self-hosting options for communities.
Open Source Alternative to:
Minimalistic AI-powered search engine for instant answers
Stars
11,901Last commit
2 months agoLicense
AGPL-3.0
Scira delivers concise, AI-generated responses to queries using a clean interface and powerful search capabilities.
Open Source Alternative to:
Unify, automate, and elevate your monitoring workflow
Stars
12,418Last commit
21 days agoLicense
MIT
Open-source platform for centralizing alerts, automating responses, and enhancing incident management across your tech stack.
Open Source Alternative to:
Self-hosted file sync with AI-powered organization
Stars
15,347Last commit
3 days agoLicense
Unknown
Open source file sync and sharing platform with custom properties, AI automation, collaborative editing, and enterprise-grade security for teams.
Open Source Alternative to:
A free, open source, cross-platform video editor
Stars
15,449Last commit
20 hours agoLicense
GPL-3.0
Free, open-source video editor supporting 4K resolution, hundreds of formats, and professional features like Blackmagic Design integration across Windows, Mac, and Linux.
Open Source Alternative to:
Open-source LLM tracing & evaluation for AI optimization
Stars
11,905Last commit
5 hours agoLicense
Elastic-2.0
Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.
Open Source Alternative to:
AI-powered grammar checker for 30+ languages
Stars
15,159Last commit
9 hours agoLicense
LGPL-2.1
Check grammar, punctuation, and spelling errors instantly with AI-powered technology. Supports 30+ languages with browser extensions and desktop apps.
Open Source Alternative to:
Collect, organize, cite, and share research in one place
Stars
15,662Last commit
4 days agoLicense
Unknown
Reference manager that captures sources from the web, organizes them with tags and collections, and generates citations in 9,000+ styles for Word, LibreOffice, and Google Docs.
Open Source Alternative to:
Self-hosted session replay with complete data control
Stars
13,003Last commit
6 hours agoLicense
AGPL-3.0
Open-source session replay and product analytics platform you can self-host for complete control over data security, privacy, and compliance.
Open Source Alternative to:
Secure, decentralized messaging for teams and individuals
Stars
13,593Last commit
5 hours agoLicense
AGPL-3.0
Open-source platform for encrypted communication, file sharing, and collaboration based on the Matrix protocol.
Open Source Alternative to:
Self-hosted Kanban board with real-time collaboration
Stars
12,625Last commit
23 hours agoLicense
Unknown
Self-hosted Kanban board for agile teams. Unlimited boards, real-time sync, GDPR-compliant, and available as a free Community Edition or paid Pro.
Open Source Alternative to:
Private meeting notes, no bots, files you own
Stars
9,528Last commit
10 hours agoLicense
MIT
Records system audio without joining your call, then turns rough notes into editable summaries. Audio, transcripts, and notes stay as local files.
Open Source Alternative to:
Flexible spreadsheets with database power
Stars
11,970Last commit
1 day agoLicense
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:
Ultra-fast AI gateway with enterprise-grade reliability
Stars
8,928Last commit
5 hours agoLicense
Apache-2.0
Open-source AI gateway delivering 50x faster performance than alternatives. Access 1000+ models from 8+ providers with built-in governance, fallback, and observability.
Open Source Alternative to:
Professional RAW photo editing and workflow management
Stars
13,293Last commit
12 hours agoLicense
GPL-3.0
Open source photography workflow application for RAW development. Non-destructive editing, professional color management, and GPU acceleration for photographers.
Open Source Alternative to:
Lightning-fast search for massive datasets
Stars
11,725Last commit
3 days agoLicense
Apache-2.0
High-performance search engine designed for big data, offering scalability, real-time indexing, and cost-effective operations.
Open Source Alternative to:
High-performance distributed database for all workloads
Stars
10,340Last commit
9 days agoLicense
Apache-2.0
Scalable, high-availability database system supporting OLTP, OLAP, and hybrid transactional/analytical processing workloads.
Open Source Alternative to:
Modern payment infrastructure for digital products and SaaS
Stars
10,368Last commit
5 hours agoLicense
Apache-2.0
Comprehensive payment solution with built-in tax handling, automated benefits, and seamless integrations for digital product and SaaS businesses.
Open Source Alternative to:
Graph database built for GraphRAG and multi-tenant AI apps
Stars
10,495Last commit
5 hours agoLicense
SSPL-1.0
Graph database using sparse matrix representation and linear algebra to deliver ultra-low latency Cypher queries, native multi-tenancy, and built-in GraphRAG support for AI applications.
Open Source Alternative to:
2FA token manager for Android with encrypted vault
Stars
13,334Last commit
1 month agoLicense
GPL-3.0
Android app for managing two-factor authentication tokens with encrypted storage, biometric unlock, flexible backups, and import/export from major 2FA apps.
Open Source Alternative to:
Lightning-fast open source search engine for big data
Stars
12,062Last commit
19 hours agoLicense
GPL-3.0
Open source search database delivering 2.83x faster performance than Elasticsearch. Features vector search, SQL interface, and full-text capabilities.
Open Source Alternative to:
Terminal-native AI coding agent built on ZSH
Stars
7,635Last commit
18 hours agoLicense
Apache-2.0
AI coding harness that runs inside your terminal, mixes LLMs per task, and uses multi-agent architecture to handle large codebases without bloating context.
Open Source Alternative to:
Self-hosted bookmark manager built for speed and simplicity
Stars
11,314Last commit
18 days agoLicense
MIT
Minimal, fast bookmark manager with automatic metadata fetching, archiving, multi-user support, and browser extensions. Easy Docker setup with SQLite.
Open Source Alternative to:
On-the-fly image resizing and conversion for your own server
Stars
11,129Last commit
5 days agoLicense
Apache-2.0
Self-hosted image processing server that resizes, converts, and optimizes images on demand via URL parameters, with built-in security against common attack vectors.
Open Source Alternative to:
Distributed task queue for background jobs and workflows
Stars
8,140Last commit
8 hours agoLicense
MIT
Durable orchestration platform for managing AI agents, scheduling background tasks, and running mission-critical workflows.
Open Source Alternative to:
Private workspace for notes, tasks, and databases
Stars
8,941Last commit
6 days agoLicense
Unknown
A local-first, encrypted workspace for notes, tasks, databases, and chats. Your data stays on your device, syncs peer-to-peer, and never passes through a central server.
Open Source Alternative to:
Magical data pipeline tool for seamless transformations
Stars
8,833Last commit
3 days agoLicense
Apache-2.0
Open-source data pipeline platform for effortless data integration, transformation, and orchestration using Python, SQL, and R.
Open Source Alternative to:
Professional digital painting made accessible to everyone
Stars
10,584Last commit
5 hours agoLicense
GPL-3.0
Free and open source painting program built by artists for artists. Features professional brushes, layers, animation tools, and drawing assistants for all skill levels.
Open Source Alternative to:
Get alerted when cron jobs and scheduled tasks miss their run
Stars
10,429Last commit
6 hours agoLicense
BSD-3-Clause
Monitors cron jobs, background workers, and scheduled tasks by expecting periodic HTTP pings and alerting you when they stop arriving on time.
Open Source Alternative to:
Cloud-native data warehouse for lightning-fast analytics
Stars
9,471Last commit
5 hours agoLicense
Apache-2.0
Databend is an open-source, elastic cloud data warehouse built for high-performance analytics and seamless integration with popular data tools.
Open Source Alternative to:
Self-hosted enterprise agent platform with real permissions
Stars
6,654Last commit
10 hours agoLicense
MIT
Deploy AI agents inside your own infrastructure with document-grounded answers, computer use, and support for any AG-UI-compatible agent framework.
Open Source Alternative to:
Open source metering and billing infrastructure for any pricing model
Stars
6,883Last commit
6 hours agoLicense
AGPL-3.0
A flexible billing platform that handles usage-based metering, credit management, and subscription billing, giving developers full control over pricing models.
Open Source Alternative to:
Real-time observability for modern web applications
Stars
9,381Last commit
18 days agoLicense
Apache-2.0
Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.
Open Source Alternative to:
Open-source A/B testing and feature flagging platform
Stars
8,508Last commit
2 days agoLicense
MIT
Powerful, developer-friendly experimentation tool for data-driven product decisions. Seamless integration, real-time insights, and flexible deployment.
Open Source Alternative to:
Monitor LLM performance with open-source observability
Stars
7,501Last commit
6 days agoLicense
Apache-2.0
Open-source observability platform for LLMs using OpenTelemetry. Monitor performance, track costs, and debug AI applications with just 2 lines of code.
Open Source Alternative to:
Fast, flexible VPN replacement with zero-trust security
Stars
9,121Last commit
5 hours agoLicense
Apache-2.0
Replace your VPN with zero-trust access built on WireGuard. Fast, scalable network security with simple policies and identity provider integration.
Open Source Alternative to:
Self-hostable voice agent platform with full model control
Stars
5,904Last commit
7 hours agoLicense
BSD-2-Clause
Open-source voice agent platform that lets you plug in your own STT, LLM, and TTS models, deploy on-prem or in your VPC, and build agents via MCP or a visual workflow builder.
Open Source Alternative to:
Build and play games inside a game engine that runs live
Stars
6,496Last commit
15 hours agoLicense
MIT
A game creation platform built on Valve's Source 2 engine, letting you build, share, and play games without leaving the environment.
Open Source Alternative to:
Openlane – Open-source, developer-first platform for automated compliance, risk management, and built-in Trust Center.
Openlane
c15t
CodeRabbit