Developer Tools

PO

Postman

4.3/5.01 verified review

Freemium·Open Source·Apache-2.0

Native API platform for development, testing, documentation, and agent automation.

• Broad protocol support including HTTP, GraphQL, gRPC, and WebSockets.
• Advanced tooling for automated testing and request collections.
• Native integration with coding agents through CLI and MCP servers.

24stars on GitHub

HV

Hyperiux Vault

4.3/5.01 verified review

Freemium·Open Source·MIT

Interaction effects library and components for React and Next.js

• Interaction effects built as real, editable source code rather than locked black boxes.
• Direct component installation into your project repository using the official CLI.
• Native integration with established frontend ecosystem libraries like GSAP, Three.js, and Lenis.

107stars on GitHub

NA

NativeAppTemplate

4.3/5.01 verified review

Freemium·Open Source·MIT

The fastest way to build a Rails-backed native iOS/Android SaaS app.

• True native architecture using Swift and Kotlin.
• Structured and scalable backend powered by Ruby on Rails.
• Pre-wired authentication and multitenancy components.

15stars on GitHub

SE

Sectr

4.3/5.01 verified review

Freemium·Open Source·MIT

Single source of truth and state management for artificial intelligence agents

• Direct integration with existing agent frameworks without restructuring
• Ability to scale agents to zero during human approval waits
• Native support for multiple AI SDKs in Python

RE

Redash

4.3/5.01 verified review

Free·Open Source·BSD-2-Clause

Connect to any data source, query, visualize, and share organizational data collaboratively.

• Native support for a wide variety of relational and non-relational databases.
• Collaborative web SQL editor with autocomplete and reusable snippet management.
• Open model allowing complete self-hosting via Docker containers.

28.9kstars on GitHub

TE

Telnyx

4.3/5.01 verified review

Paid·Open Source·MIT

Carrier-grade network and compute infrastructure for real-time voice agents and telecommunications.

• Carrier-owned network infrastructure and GPUs with no intermediaries.
• Unified APIs for voice, messaging, email, and AI inference.
• Compatibility with standard industry SDKs such as OpenAI.

224stars on GitHub

BU

Builder.io

4.3/5.01 verified review

Freemium·Open Source·MIT

Visual and collaborative platform to build software using AI and production code.

• Direct synchronization between visual designs and the actual repository codebase.
• Elimination of friction and manual handoffs between engineers and designers.
• Native integration with modern frontend frameworks through dedicated SDKs.

8.9kstars on GitHub

CO

Coveralls

4.3/5.01 verified review

Freemium·Open Source·MIT

Measure, track and improve code coverage across your engineering organization with support for any CI service.

• Always free for open source repositories
• Compatible with virtually any continuous integration service
• Historical trend visualization for test coverage

4.3kstars on GitHub

DI

DigitalOcean

4.3/5.01 verified review

Paid·$4/mo·Apache-2.0

Cloud computing platform for developers offering scalable virtual servers, managed databases, and AI inference.

• Predictable and transparent pricing structure with no hidden egress fees on standard plans.
• Intuitive control panel and powerful API that streamline virtual server provisioning.
• Comprehensive technical documentation and up-to-date tutorials for developers.

7.1kstars on GitHub

AF

Awesome Free Dev Tools

4.2/5.01 verified review

Free·Open Source·MIT

Curated directory of free and open-source software development tools

• Comprehensive compilation of free and open-source developer tools
• Clear categorization focused on AI assistants and code editors
• Direct public access with no registration wall

14stars on GitHub

BT

BTST

4.1/5.01 verified review

Freemium·Open Source·MIT

Open-source TypeScript system to add full features to your existing React applications.

• Fully open-source TypeScript architecture.
• Allows adding full-stack plugins without a hosted control plane.
• Generated code and UI can be fully ejected and modified.

79stars on GitHub

MI

Milo

4.1/5.01 verified review

Freemium·Open Source·AGPL-3.0

An open source business operating system for product-led companies.

• Transparent open source architecture.
• Unified system of record for core business entities.
• Native audit logging capabilities across platforms.

31stars on GitHub