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Open Source Projects using Python

A curated collection of the 287 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.

Favicon of Bifrost

Bifrost

AI
Ultra-fast AI gateway with enterprise-grade reliability

  • Stars

    7,431

  • Last commit

    6 hours ago

  • License

    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:

Favicon of OpenRouter
OpenRouter
Favicon of Databend

Databend

Cloud-native data warehouse for lightning-fast analytics

  • Stars

    9,416

  • Last commit

    6 hours ago

  • License

    Unknown
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:

Favicon of Snowflake
Snowflake
Favicon of Mage

Mage

AI
Magical data pipeline tool for seamless transformations

  • Stars

    8,804

  • Last commit

    6 days ago

  • License

    Apache-2.0
Open-source data pipeline platform for effortless data integration, transformation, and orchestration using Python, SQL, and R.

Open Source Alternative to:

Favicon of Pipedream
Pipedream
Favicon of Highlight

Highlight

Real-time observability for modern web applications

  • Stars

    9,367

  • Last commit

    1 day ago

  • License

    Apache-2.0
Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of AnyType

AnyType

Private workspace for notes, tasks, and databases

  • Stars

    8,666

  • Last commit

    1 day ago

  • License

    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:

Favicon of Notion
Notion
Favicon of Krita

Krita

Professional digital painting made accessible to everyone

  • Stars

    10,237

  • Last commit

    7 hours ago

  • License

    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:

Favicon of Adobe Photoshop
Adobe Photoshop
Favicon of Hatchet

Hatchet

Effortless CI/CD for modern cloud applications

  • Stars

    7,753

  • Last commit

    6 hours ago

  • License

    MIT
Durable orchestration platform for managing AI agents, scheduling background tasks, and running mission-critical workflows.

Open Source Alternative to:

Favicon of Make
Make
Favicon of OpenLLMetry

OpenLLMetry

AI
Monitor LLM performance with open-source observability

  • Stars

    7,385

  • Last commit

    10 days ago

  • License

    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:

Favicon of DataDog
DataDog
Favicon of FireZone

FireZone

Fast, flexible VPN replacement with zero-trust security

  • Stars

    9,038

  • Last commit

    6 hours ago

  • License

    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:

Favicon of Zerotier
Zerotier
Favicon of GrowthBook

GrowthBook

Open-source A/B testing and feature flagging platform

  • Stars

    8,139

  • Last commit

    6 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:

Favicon of LaunchDarkly
LaunchDarkly
Favicon of s&box

s&box

Build and play games inside a game engine that runs live

  • Stars

    6,408

  • Last commit

    7 hours ago

  • License

    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:

Favicon of Unity
Unity
Favicon of Activeloop

Activeloop

AI
The tensor database for AI data

  • Stars

    9,226

  • Last commit

    3 months ago

  • License

    Apache-2.0
Deep Lake is an open-source database for storing, querying and managing complex AI data like images, audio, and embeddings.

Open Source Alternative to:

Favicon of MongoDB
MongoDB
Favicon of OneUptime

OneUptime

Comprehensive monitoring and incident management platform

  • Stars

    7,481

  • Last commit

    6 hours ago

  • License

    Apache-2.0
All-in-one solution for uptime monitoring, incident management, and status pages to keep your services running smoothly

Open Source Alternative to:

Favicon of Opsgenie
Opsgenie
Favicon of Plasmic

Plasmic

Visual app builder that integrates with your existing codebase

  • Stars

    6,961

  • Last commit

    17 hours ago

  • License

    MIT
Open-source visual editor for building websites and web apps. Connect to any data source, design custom UIs, and ship production React code without leaving your stack.

Open Source Alternative to:

Favicon of Framer
Framer
Favicon of GreptimeDB

GreptimeDB

Unified observability database for metrics, logs, and traces

  • Stars

    6,552

  • Last commit

    10 hours ago

  • License

    Apache-2.0
Cloud-native observability database unifying metrics, logs, and traces with sub-second queries, 50x cost reduction, and seamless OpenTelemetry integration.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of OctoBot

OctoBot

Automate crypto trading with open-source strategies

  • Stars

    6,438

  • Last commit

    2 days ago

  • License

    GPL-3.0
OctoBot is an open-source platform for automated cryptocurrency trading, offering customizable strategies and easy integration with exchanges.

Open Source Alternative to:

Favicon of 3Commas
3Commas
Favicon of Helicone

Helicone

AI
Build reliable AI apps with comprehensive observability

  • Stars

    6,084

  • Last commit

    3 days ago

  • License

    Apache-2.0
Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of Rivet

Rivet

Build stateful backends with in-memory actors

  • Stars

    6,069

  • Last commit

    6 hours ago

  • License

    Apache-2.0
Open-source infrastructure for long-lived, in-memory processes called Actors. Combines state and compute with sub-millisecond latency, realtime capabilities, and horizontal scaling.

Open Source Alternative to:

Favicon of Cloudflare Workers
Cloudflare Workers
Favicon of Apache IoTDB

Apache IoTDB

Time-series database built for industrial IoT workloads

  • Stars

    6,381

  • Last commit

    15 hours ago

  • License

    Apache-2.0
Apache IoTDB manages industrial IoT time-series data with high-throughput read/write, edge-cloud sync, ultra-high compression, and integrations with Hadoop, Spark, Flink, and Grafana.

Open Source Alternative to:

Favicon of InfluxDB
InfluxDB
Favicon of CloudQuery

CloudQuery

Sync and transform data from any source to any destination

  • Stars

    6,484

  • Last commit

    1 day ago

  • License

    MPL-2.0
CloudQuery is an open-source ELT platform that enables easy data integration from hundreds of cloud and security tools to any destination.

Open Source Alternative to:

Favicon of Snowflake
Snowflake
Favicon of OpenStack

OpenStack

Open source cloud infrastructure trusted at massive scale

  • Stars

    6,007

  • Last commit

    7 hours ago

  • License

    Apache-2.0
OpenStack manages compute, storage, and networking across VMs, bare metal, and containers via APIs or a dashboard. Trusted by Walmart, China Mobile, and more.

Open Source Alternative to:

Favicon of Google Cloud
Google Cloud
Favicon of Flagsmith

Flagsmith

Feature flags and remote config for rapid deployment

  • Stars

    6,519

  • Last commit

    11 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:

Favicon of LaunchDarkly
LaunchDarkly
Favicon of Apache Pinot

Apache Pinot

Distributed OLAP database for real-time analytics at scale

  • Stars

    6,122

  • Last commit

    6 hours ago

  • License

    Apache-2.0
Sub-second SQL queries on fresh streaming data at petabyte scale, built for high-concurrency user-facing apps and AI agent backends.

Open Source Alternative to:

Favicon of Splunk
Splunk
Favicon of Permify

Permify

Build scalable authorization in minutes, not months

  • Stars

    5,936

  • Last commit

    18 hours ago

  • License

    AGPL-3.0
Open-source authorization service for implementing fine-grained access controls. Centralized, scalable solution supporting RBAC, ABAC and ReBAC with Google Zanzibar-inspired architecture.

Open Source Alternative to:

Favicon of Auth0
Auth0
Favicon of Weblate

Weblate

Continuous web-based localization for global reach

  • Stars

    6,028

  • Last commit

    7 hours ago

  • License

    GPL-3.0
Web-based continuous localization platform with version control integration, quality checks, and clean interface. Used by 2,500+ projects in 165+ countries.

Open Source Alternative to:

Favicon of Crowdin
Crowdin
Favicon of Flexprice

Flexprice

Open source metering and billing infrastructure for any pricing model

  • Stars

    4,358

  • Last commit

    7 hours ago

  • License

    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:

Favicon of Stripe Billing
Stripe Billing
Favicon of GIMP

GIMP

Professional image editing without the price tag

  • Stars

    6,369

  • Last commit

    6 hours ago

  • License

    Unknown
Free, open-source image editor with professional tools for photo manipulation, digital art creation, and graphic design. Cross-platform support.

Open Source Alternative to:

Favicon of Adobe Photoshop
Adobe Photoshop
Favicon of Tabularis

Tabularis

Desktop SQL client with built-in MCP for AI agent access

  • Stars

    4,125

  • Last commit

    9 hours ago

  • License

    Apache-2.0
Desktop database client for PostgreSQL, MySQL/MariaDB, SQLite, and 14+ more databases, with a built-in MCP server, SQL notebooks, visual query builder, and a plugin system.

Open Source Alternative to:

Favicon of TablePlus
TablePlus
Favicon of BleachBit

BleachBit

Clean your system and free disk space

  • Stars

    6,622

  • Last commit

    9 hours ago

  • License

    GPL-3.0
BleachBit frees disk space & protects privacy by deleting cache, cookies, history & temp files from Firefox, Chrome & more. Open source for Linux/Windows.

Open Source Alternative to:

Favicon of CCleaner
CCleaner
Favicon of OpenShot

OpenShot

Free, cross-platform video editor that's easy to learn

  • Stars

    6,179

  • Last commit

    2 days ago

  • License

    GPL-3.0
A free, open-source video editor for Linux, Mac, and Windows with animation, effects, multi-track editing, and 3D title rendering.

Open Source Alternative to:

Favicon of CapCut
CapCut
Favicon of ACI.dev

ACI.dev

AI
Build reliable AI agents with unified tool integration

  • Stars

    4,880

  • Last commit

    3 months ago

  • License

    Apache-2.0
Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server

Open Source Alternative to:

Favicon of Pipedream
Pipedream
Favicon of Agenta

Agenta

AI
Build reliable LLM apps with integrated workflows

  • Stars

    4,495

  • Last commit

    7 hours ago

  • License

    MIT
Open-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.

Open Source Alternative to:

Favicon of LangSmith
LangSmith
Favicon of Mathesar

Mathesar

Spreadsheet-like interface for PostgreSQL databases

  • Stars

    5,096

  • Last commit

    1 day ago

  • License

    GPL-3.0
A self-hosted tool that provides an intuitive, spreadsheet-style interface for viewing, editing, and querying PostgreSQL databases without technical expertise.

Open Source Alternative to:

Favicon of Airtable
Airtable
Favicon of OSMAnd

OSMAnd

Navigate anywhere with detailed offline maps and GPS

  • Stars

    5,916

  • Last commit

    7 hours ago

  • License

    Unknown
Comprehensive offline navigation app with detailed maps, turn-by-turn guidance, and specialized routing for hiking, cycling, and walking worldwide.

Open Source Alternative to:

Favicon of Google Maps
Google Maps
Favicon of Frappe CRM

Frappe CRM

Open-source CRM that puts simplicity and control first

  • Stars

    3,354

  • Last commit

    7 hours ago

  • License

    AGPL-3.0
A flexible and customizable CRM platform for managing contacts, deals, and customer relationships without the complexity or user-based pricing of traditional solutions.

Open Source Alternative to:

Favicon of Attio
Attio
Favicon of Logfire

Logfire

AI
Powerful observability made simple for developers

  • Stars

    4,430

  • Last commit

    10 hours ago

  • License

    MIT
Logfire offers intuitive observability tools for Python applications, combining logs, profiling, and telemetry in one platform.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of Kdenlive

Kdenlive

Professional video editing without the price tag

  • Stars

    5,483

  • Last commit

    6 hours ago

  • License

    GPL-3.0
Cross-platform non-linear video editor offering professional features for free. Edit videos on Linux, Windows, macOS, and BSD with advanced tools and effects.

Open Source Alternative to:

Favicon of CapCut
CapCut
Favicon of Pipeshub

Pipeshub

AI
Enterprise workplace AI with data you own and control

  • Stars

    3,568

  • Last commit

    12 hours ago

  • License

    Apache-2.0
Self-hostable enterprise AI platform that unifies business data across apps, powers a knowledge graph for cited answers, and lets teams build AI agents across their stack.

Open Source Alternative to:

Favicon of Glean
Glean
Favicon of /dev/push

/dev/push

Deploy apps instantly with git push - open source alternative

  • Stars

    4,742

  • Last commit

    6 months ago

  • License

    MIT
Open source deployment platform that deploys apps directly from GitHub with zero-downtime, real-time logs, preview URLs, and support for Python, Node.js frameworks.

Open Source Alternative to:

Favicon of Vercel
Vercel
Favicon of Erxes

Erxes

Open-source growth platform for customer-centric teams

  • Stars

    4,068

  • Last commit

    7 hours ago

  • License

    AGPL-3.0
All-in-one solution for marketing, sales, and customer service. Boost engagement, streamline workflows, and drive growth.

Open Source Alternative to:

Favicon of Attio
Attio
Favicon of IronCalc

IronCalc

A spreadsheet engine you can embed, self-host, or run in the browser

  • Stars

    4,109

  • Last commit

    8 hours ago

  • License

    Apache-2.0
IronCalc is an open-source, Rust-powered spreadsheet engine with .xlsx support, 300+ functions, and bindings for JavaScript and Python.

Open Source Alternative to:

Favicon of Microsoft Excel
Microsoft Excel
Favicon of Tracecat

Tracecat

AI
Open source security automation platform for builders

  • Stars

    3,770

  • Last commit

    6 hours ago

  • License

    AGPL-3.0
Tracecat is a scalable, self-hostable platform for automating security workflows and playbooks without limits.

Open Source Alternative to:

Favicon of Jira
Jira
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