Browse Trending Open Source Tools This Month
Open source tools gaining GitHub stars fastest over the last 30 days. Ranked by growth rate rather than raw star count, so genuine breakouts surface above established projects.
Self-hosted bookmark manager built for speed and simplicity
Stars
11,296Last commit
12 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:
AI coding agent for VS Code, JetBrains, CLI, and Cloud
Stars
27,587Last commit
8 hours agoLicense
MIT
Open source AI coding agent with 500+ models, bring-your-own-key support, and specialized modes for writing, debugging, and planning code across IDEs and CLI.
Open Source Alternative to:
Privacy-focused browser with powerful customization
Stars
44,902Last commit
16 hours agoLicense
MPL-2.0
A Firefox-based browser offering enhanced privacy, split views, and extensive customization options for a personalized browsing experience.
Open Source Alternative to:
A spreadsheet engine you can embed, self-host, or run in the browser
Stars
4,211Last commit
7 hours agoLicense
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:
GPU-accelerated terminal built for power users
Stars
35,261Last commit
11 hours agoLicense
GPL-3.0
High-performance terminal emulator with GPU acceleration, graphics support, and advanced scripting capabilities for developers and system administrators.
Open Source Alternative to:
Run AI models locally or connect to cloud, privately
Stars
44,926Last commit
7 hours agoLicense
Apache-2.0
Jan runs open-source AI models on your own hardware or connects to cloud providers like OpenAI, Anthropic, and Google, keeping your conversations off third-party servers.
Open Source Alternative to:
Privacy-first browser built for power users
Stars
6,361Last commit
20 hours agoLicense
Unknown
Firefox-based browser with built-in ad blocking, oblivious DNS, zero telemetry, tree-style tabs, and no AI features sending your data anywhere.
Open Source Alternative to:
Turn bare metal into intelligent cloud infrastructure
Stars
2,255Last commit
7 hours agoLicense
Apache-2.0
Transform bare metal servers into a complete cloud platform with REST API for Kubernetes clusters, databases, VMs, and load balancers. Build your own cloud.
Open Source Alternative to:
Fast, private browser that puts you first
Stars
23,875Last commit
11 hours agoLicense
MPL-2.0
A secure web browser that blocks ads and trackers, protects privacy, and loads pages faster while saving data and battery life.
Open Source Alternative to:
Secure email, calendar and contacts with end-to-end encryption
Stars
8,006Last commit
7 hours agoLicense
GPL-3.0
Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.
Open Source Alternative to:
Open-source search and analytics at enterprise scale
Stars
13,856Last commit
21 hours agoLicense
Apache-2.0
Community-driven, Apache 2.0-licensed search and analytics suite for ingesting, searching, visualizing, and analyzing data at scale with AI/ML capabilities.
Open Source Alternative to:
Lightning-fast analytics for massive datasets
Stars
50,386Last commit
7 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:
Professional raw photo processing made free and powerful
Stars
4,224Last commit
9 hours agoLicense
GPL-3.0
Free, cross-platform raw image processor with 32-bit floating point engine, advanced demosaicing algorithms, and professional-grade editing tools for photographers.
Open Source Alternative to:
Transform your time tracking into actionable insights
Stars
916Last commit
22 days agoLicense
GPL-3.0
Advanced time tracking and productivity analytics tool that captures detailed work patterns, generates comprehensive reports, and helps optimize workflow efficiency.
Open Source Alternative to:
Webhook delivery platform with retries, security, and a portal
Stars
3,446Last commit
4 days agoLicense
MIT
Add customer-facing webhooks to your product without building the infrastructure. Handles retries, signatures, multi-tenancy, filtering, and monitoring at scale.
Open Source Alternative to:
Handcrafted minimal bookmark manager with advanced tagging system
Stars
1,326Last commit
2 months agoLicense
MIT
A private, open-source bookmark manager for power users and large libraries, with a powerful, clutter-free UI.
Open Source Alternative to:
Self-hosted session replay with complete data control
Stars
12,978Last commit
13 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:
Open source infrastructure as code tool
Stars
30,478Last commit
16 hours agoLicense
MPL-2.0
A community-driven, truly open-source fork of Terraform for managing cloud infrastructure through code.
Open Source Alternative to:
Understand your audience with privacy-first analytics.
Stars
13,115Last commit
11 hours agoLicense
AGPL-3.0
Get next-gen, open-source, and cookieless web analytics. Understand user behavior with session replays, real-time data, and web vitals. GDPR/CCPA compliant.
Open Source Alternative to:
Legally binding document signing for individuals and teams
Stars
18,701Last commit
1 day agoLicense
AGPL-3.0
Self-hostable e-signature platform for creating, sending, and signing PDF forms with automatic digital signatures, a REST API, and embeddable components.
Open Source Alternative to:
Track your life, your way
Stars
3,632Last commit
13 hours agoLicense
GPL-3.0
Ryot is a versatile platform for effortlessly tracking media, fitness, and more, replacing manual methods like spreadsheets.
Open Source Alternative to:
Unlock Data's Potential with Open Source Power
Stars
1,424Last commit
1 day agoLicense
Apache-2.0
Leverage advanced analytics with a modern PostgreSQL kernel. 100% open source for robust data solutions.
Open Source Alternative to:
GPU orchestration across clouds, Kubernetes, and on-prem
Stars
2,279Last commit
8 hours agoLicense
MPL-2.0
Unified control plane for AI compute that provisions and schedules GPU workloads across any cloud, Kubernetes cluster, or bare-metal server.
Open Source Alternative to:
Create engaging surveys and gather valuable insights
Stars
3,763Last commit
7 hours agoLicense
Unknown
LimeSurvey is a powerful open-source tool for creating customizable online surveys, polls, and questionnaires.
Open Source Alternative to:
Pay per email sent, not for contact storage
Stars
4,726Last commit
1 month agoLicense
AGPL-3.0
Open source email platform for transactional and marketing emails. Self-host or use cloud service with transparent pricing - pay only for emails sent.
Open Source Alternative to:
Cross-platform terminal with AI built in
Stars
22,485Last commit
4 days agoLicense
Apache-2.0
Enhance your terminal with AI, file previews, and web browsing. Available on MacOS, Linux, and Windows.
Open Source Alternative to:
Build AI agents and automate complex workflows seamlessly
Stars
1,020Last commit
8 hours agoLicense
Apache-2.0
Create intelligent automation workflows combining AI agents with your favorite apps and services. Connect, automate, and scale your operations without complex coding.
Open Source Alternative to:
Open-source platform for collecting and prioritizing feedback
Stars
4,574Last commit
4 days agoLicense
AGPL-3.0
A self-hosted community feedback tool that helps organizations gather, discuss, and prioritize user suggestions and feature requests.
Open Source Alternative to:
Modern payment infrastructure for digital products and SaaS
Stars
10,363Last commit
7 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:
Zero-Trust VPN with built-in 2FA/MFA and SSO capabilities
Stars
2,867Last commit
8 hours agoLicense
Unknown
Enterprise-grade open source VPN solution combining WireGuard with mandatory 2FA/MFA and integrated OpenID Connect SSO for secure remote access
Open Source Alternative to:
Agentic AI framework that runs, learns, and self-corrects
Stars
19,447Last commit
23 hours agoLicense
MIT
Autonomous AI agent framework that operates on its own sandboxed computer, creates tools dynamically, manages memory, and executes multi-step workflows with full transparency.
Open Source Alternative to:
AI second brain for research, automation, and personal agents
Stars
37,666Last commit
2 months agoLicense
AGPL-3.0
Self-hostable AI assistant that connects to your docs and the web, lets you build agents, schedule automations, and run research with verifiable citations.
Open Source Alternative to:
High-performance graph computing for scalable data analysis
Stars
4,611Last commit
8 hours agoLicense
Unknown
Memgraph is a scalable, in-memory graph database solution offering high-performance computing and Neo4j compatibility.
Open Source Alternative to:
Open canvas for designing and building web apps
Stars
2,671Last commit
19 hours agoLicense
Apache-2.0
Design and build web applications on an open canvas with AI-powered tools, Figma integration, pixel drawing, and a modular SDK built for extensibility.
Open Source Alternative to:
Free, open-source visual website builder for designers
Stars
3,002Last commit
4 days agoLicense
AGPL-3.0
An online tool for visually creating static sites with dynamic data. With the free/libre spirit of internet, together.
Open Source Alternative to:
Open-source API documentation and testing platform
Stars
16,252Last commit
10 hours agoLicense
MIT
Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.
Open Source Alternative to:
Self-hostable image and video delivery with URL transforms
Stars
412Last commit
9 days agoLicense
AGPL-3.0
Upload, transform, and deliver images and videos via a REST API and URL parameters, using your own S3-compatible storage. Cloudinary-compatible syntax, no vendor lock-in.
Open Source Alternative to:
Open source CI/CD platform that's faster and costs less
Stars
1,622Last commit
22 hours agoLicense
Unknown
Continuous integration and delivery platform offering faster builds, lower costs, and maintenance-free operations. Cut build times dramatically while reducing CI/CD expenses by 50%.
Open Source Alternative to:
Automate financial processes for smarter business decisions
Stars
3,936Last commit
2 days agoLicense
AGPL-3.0
Cloud-based accounting software that streamlines bookkeeping, generates intelligent reports, and offers multi-currency support for efficient financial management.
Open Source Alternative to:
Run Claude Code, Codex, Grok, and more from one app
Stars
114Last commit
7 hours agoLicense
Apache-2.0
A Mac app that brings multiple AI coding agents into a single window, running on your existing subscriptions with parallel agent sessions, PR management, and a built-in browser.
Open Source Alternative to:
Secure, seamless authentication for modern applications
Stars
14,675Last commit
8 hours agoLicense
MPL-2.0
An open-source identity solution offering customizable login experiences, multi-tenant support, and comprehensive user management.
Open Source Alternative to:
Manage, build, and run AI agent teams around the clock
Stars
83,193Last commit
7 hours agoLicense
Unknown
A collaborative platform to create, schedule, and operate AI agents that handle long-running tasks, team workflows, and automated jobs without constant oversight.
Open Source Alternative to:
Postiz – The All-in-One agentic social media scheduling tool
Docmost
InfluxDB
Windshift