#1
GitHub

GitHub

★★★★★ 4.8 Free / $4+ Free plan

The world's largest code hosting platform with version control, CI/CD, project management, and AI-powered Copilot.

repositoriespull-requestsactions-ci-cdcopilot
✓ Industry standard for open-source✓ GitHub Actions CI/CD included free✓ Copilot AI integration
#2
Hoppscotch

Hoppscotch

★★★★★ 4.5 Free / $7+ Free plan

Open-source API development ecosystem offering a lightweight Postman alternative with REST, GraphQL, WebSocket, and real-time testing capabilities in the browser.

rest-clientgraphql-clientwebsocket-testingcollections
✓ Open-source and self-hostable✓ Lightweight and fast (browser-based, no download)✓ Supports REST, GraphQL, WebSocket, SSE, Socket.IO
#3
Penpot

Penpot

★★★★ 4.3 Free / $8+ Free plan

Open-source design and prototyping platform offering Figma-like features with CSS-based design, real-time collaboration, and self-hosting for full data control.

vector-editingprototypingcomponentsdesign-tokens
✓ Open-source and self-hostable for free✓ CSS-based design outputs production-ready code✓ Real-time collaboration (Figma-like experience)
#4

Huly

★★★★ 4.1 Free / $15+ Free plan

Open-source all-in-one project management platform combining issue tracking, team collaboration, HR, and knowledge management in a Linear-inspired interface.

issue-trackingteam-plannervirtual-officedocuments
✓ Open-source with self-hosting option✓ All-in-one platform reducing tool sprawl✓ Fast and modern interface

Stay ahead of AI — Weekly tool picks, straight to your inbox.

Join thousands of professionals who get curated AI tool recommendations every week. No spam, unsubscribe anytime.