Best Developer Tools Open Source Tools in 2026

Spacedrive

Business & Productivity

Unified file explorer that spans your devices and cloud drives

stars 37.9Klicense NOASSERTIONlang Rust

File Sync & Storage File Sharing Knowledge Management+3

PouchDB

Web & App Development Data & Analytics Business & Productivity

JavaScript database that syncs with CouchDB, works offline

stars 17.6Klicense Apache-2.0lang JavaScript

Database Developer Tools API Development Tools+1

OrientDB

Data & Analytics Web & App Development IT Management

Multi-model NoSQL database: graphs, docs, and key-value

stars 5Klicense Apache-2.0lang Java

Database No Code Developer Tools+2

21st.dev

Web & App Development AI & Machine Learning Design & Creative+1

Browse and install production-ready shadcn/ui components via CLI

stars 1.9Klicense MITlang TypeScript

UI/UX Design Developer Tools AI Coding Assistant+3

ProjectDiscovery

Security & Monitoring Web & App Development IT Management+1

Open source security tools for finding vulnerabilities at scale

stars 28.1Klicense MITlang Go

Developer Tools DevOps Tools Cybersecurity+18

Ploomber

Web & App Development IT Management Data & Analytics+3

Build reproducible Python data pipelines with DAG orchestration

stars 3.6Klicense Apache-2.0lang Python

CI/CD Platforms Authentication Authorization+12

Temporal

Web & App Development AI & Machine Learning Business & Productivity+2

Durable workflow orchestration for reliable, long-running apps

stars 19.9Klicense MITlang Go

Workflow Orchestration Developer Framework Developer Tools+14

KeyDB

IT Management Data & Analytics Web & App Development

Faster, multithreaded Redis drop-in with no API changes required

stars 12.5Klicense BSD-3-Clauselang C++

Database Developer Tools Server Management+5

Grafana

Security & Monitoring Data & Analytics Web & App Development+2

Open source dashboards for metrics, logs, and traces

stars 2.9Klicense Apache-2.0lang Go

Data Visualization Monitoring Testing+10

TiKV

Data & Analytics IT Management Web & App Development

Distributed key-value store with ACID transactions at scale

stars 16.6Klicense Apache-2.0lang Rust

Database Developer Tools Cloud Native+5

Sulu

Web & App Development Product & Project Management IT Management

Enterprise-ready open source CMS built on Symfony

stars 1.3Klicense MITlang PHP

CMS Headless CMS Developer Framework+5

Novu

Web & App Development Communication & Collaboration Product & Project Management+1

Open source notification infrastructure for product teams

stars 38.9Klicense NOASSERTIONlang TypeScript

Developer Tools API Infrastructure Open Core+7

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Spacedrive

PouchDB

OrientDB

21st.dev

ProjectDiscovery

Ploomber

Temporal

KeyDB

Grafana

TiKV

Sulu

Novu

Spacedrive

PouchDB

OrientDB

21st.dev

ProjectDiscovery

Ploomber