Open-source tools directory

Discover open-source tools worth using.

Browse self-hosted, privacy-friendly, free, and local-first software, then compare project details and repository signals.

Showing 30 of 697 Tools.

Builder logo

Builder

Drag-and-drop interface for creating and optimizing digital experiences, with headless CMS and powerful integrations.

8,658
MIT

Alternative to: WordPress

OpenStatus logo

OpenStatus

Open-source uptime monitoring platform for seamless service management, real-time alerts, and comprehensive status pages

8,627
AGPL-3.0

Alternative to: Opsgenie

Mockoon logo

Mockoon

Create, run, and share mock REST APIs without coding. Boost productivity with an intuitive interface and powerful features.

8,382
MIT

Alternative to: Postman

Hyprnote logo

Hyprnote

An intelligent note-taking assistant that combines your quick notes with meeting transcripts to create comprehensive, organized meeting summaries automatically.

8,351
MIT

Alternative to: Otter.ai

Crater logo

Crater

Crater offers AI-driven invoicing workflows, payments, and working capital tools to enhance your platform with minimal technical effort.

8,284
AGPL-3.0

Alternative to: Quickbooks

Papermark logo

Papermark

Secure, customizable platform for sharing documents and tracking engagement. Perfect for sales teams, marketers, and businesses.

8,206
AGPL-3.0

Alternative to: DocSend

GrowthBook logo

GrowthBook

Powerful, developer-friendly experimentation tool for data-driven product decisions. Seamless integration, real-time insights, and flexible deployment.

8,173
Other

Alternative to: Hypertune

Fizzy logo

Fizzy

Track issues, ideas, and projects with a modern kanban board that's fast and straightforward. Free for 1000 cards, then $20/month for unlimited use.

8,144
Other

Alternative to: Jira

Vendure logo

Vendure

A headless, API-first e-commerce framework built on Node.js with TypeScript, offering customization and scalability for online stores.

8,084
MIT

Alternative to: WooCommerce

OpenPencil logo

OpenPencil

Native .fig file support, built-in AI with 90 tools, headless CLI, Vue SDK for custom editors, real-time P2P collaboration. MIT licensed, works offline.

8,065
MIT

Alternative to: Figma

Webiny logo

Webiny

A powerful, scalable platform for building custom websites and apps with serverless architecture, offering flexibility and cost-efficiency.

8,032
Other

Alternative to: WordPress

Fathom Lite logo

Fathom Lite

A simple, privacy-first analytics platform that provides valuable website insights without compromising visitor data or requiring cookie consent banners.

8,013
MIT

Alternative to: Google Analytics

Coroot logo

Coroot

Coroot simplifies system monitoring by providing metrics, logs, traces, and profiling with zero instrumentation, leveraging eBPF technology.

7,895
Apache-2.0

Alternative to: Splunk

Tuta logo

Tuta

Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.

7,881
GPL-3.0

Alternative to: Microsoft 365

CryptPad logo

CryptPad

Open-source collaboration suite offering encrypted document editing, file sharing, and team workspaces with complete privacy protection.

7,871
AGPL-3.0

Alternative to: Microsoft 365

Hatchet logo

Hatchet

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

7,810
MIT

Alternative to: Make

draw.io logo

draw.io

Create professional diagrams online or offline with security-first approach. No registration needed. Works with Google Drive, SharePoint, Atlassian, and more.

7,792
Apache-2.0

Alternative to: Miro

Bifrost logo

Bifrost

Open-source AI gateway delivering 50x faster performance than alternatives. Access 1000+ models from 8+ providers with built-in governance, fallback, and observability.

7,647
Apache-2.0

Alternative to: Kong AI Gateway

Cap logo

Cap

Lightweight open-source CAPTCHA solution using SHA-256 proof-of-work. 250x smaller than hCaptcha, fully customizable, and privacy-focused with zero telemetry.

7,635
Other

Alternative to: reCAPTCHA

Steel logo

Steel

Open-source browser API designed for AI agents. Run headless browsers with built-in CAPTCHA solving, proxy support, and session management. Quick setup in under 1s.

7,563
Apache-2.0

Alternative to: Browserbase

OneUptime logo

OneUptime

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

7,534
Apache-2.0

Alternative to: Opsgenie

OpenLLMetry logo

OpenLLMetry

Open-source observability platform for LLMs using OpenTelemetry. Monitor performance, track costs, and debug AI applications with just 2 lines of code.

7,408
Apache-2.0

Alternative to: LangSmith

Wealthfolio logo

Wealthfolio

Wealthfolio is a simple, secure desktop app for tracking investments and managing your wealth without compromising data privacy.

7,344
AGPL-3.0

Alternative to: Quickbooks

Nango logo

Nango

Complete integrations platform with 500+ pre-built APIs, code-first approach, unified data models, and enterprise-grade security. Free tier available.

7,234
Other

Alternative to: Pipedream

Forgecode logo

Forgecode

Non-intrusive, lightweight AI coding assistant that integrates seamlessly with your terminal workflow. Get intelligent code suggestions without leaving your command line.

7,147
Apache-2.0

Alternative to: Claude Code

Pixelfed logo

Pixelfed

Decentralized photo sharing platform with chronological feeds, privacy controls, and ActivityPub federation. No ads, no algorithms, just authentic connections.

7,073
AGPL-3.0

Alternative to: Instagram

Plasmic logo

Plasmic

Build web apps, internal tools, and customer portals fast with visual editing, drag-and-drop design, and seamless codebase integration. Deploy anywhere without limits.

6,978
MIT

Alternative to: Webflow

OpenSign logo

OpenSign

A powerful, open-source e-signature solution offering customization, integration, and enhanced security for businesses of all sizes.

6,932
AGPL-3.0

Alternative to: DocuSign

Evidence logo

Evidence

Create data-driven websites and reports using SQL and Markdown, with automatic visualizations and interactive elements.

6,896
MIT

Alternative to: Power BI

Rowy logo

Rowy

A low-code platform for creating robust backends, complete with a spreadsheet UI for easy data management and custom functions.

6,810
Other

Alternative to: Airtable