4+ Best Postman Alternatives (2025)

Explore top alternatives to Postman that enhance your API development experience.

While Postman is a popular choice for API testing, exploring alternatives can provide unique features tailored to specific workflows. Tools like DevKitHub and Devkit offer intuitive interfaces and robust collaboration features, making them ideal for teams. TensorBlock Forge focuses on advanced data handling, while Voiden excels in automation, ensuring you find the right fit for your development needs. Consider factors like ease of use, integration capabilities, and pricing when evaluating these alternatives.

TensorBlock Forge

TensorBlock Forge is an AI model API platform that lets you access and call AI models from multiple providers in one place. Forge removes the friction of multi-provider AI and fragmented tooling, giving you one ultra-secure, high-performance command center to orchestrate everything. Store multiple provider API keys and access it all with a single Forge API key. Drop-in replacement for any application that uses OpenAI's API. Strong encryption for API keys with JWT-based authentication. And best of all, Forge is open-source and self-hosted.

TensorBlock Forge is an AI model API platform that allows users to access and call AI models from various providers in one centralized location. It simplifies multi-provider AI integration by offering a single ultra-secure command center for orchestration, with strong encryption and JWT-based authentication for API keys. Additionally, Forge is open-source and self-hosted, making it a versatile solution for developers.

Devkit

Devkit is a curated hub of handy tools and utilities built specifically for developers, designers, and makers with 28+ free tools. It’s designed to help them get things done faster—whether it’s validating Twitter cards, shortening URLs, generating favicon etc.

It’s intentionally lightweight, fast, and distraction-free—no fluff, no ads. Just a clean, organized set of tools that people can bookmark and revisit anytime they need quick help during product development.

Devkit is a curated hub of handy tools and utilities built specifically for developers, designers, and makers, featuring 28+ free tools. It is designed to help users accomplish tasks faster, such as validating Twitter cards and shortening URLs, all in a lightweight, fast, and distraction-free environment without ads.

Voiden

The Git-Native API Client (free, no login)

Voiden.md is an offline-first, Git-native API workspace that unifies specs, docs, tests, and mocks using programmable Markdown blocks. It allows developers to define, test, and document APIs in a way that aligns with their workflow, rather than the typical SaaS user experience. Best of all, it's free and requires no login.

DevKitHub

DevKitHub - The All-in-One Privacy Focused Dev Toolkit. +50 Developer utilities, offline and secure. Mac/Linux/Windows. ✅ 100% Offline Tools — Keep your data private & secure. 🧰 50+ Utilities — Covering generation, conversion, debugging, formatting & more. 💻 Cross-Platform — Works on macOS, Windows, and Linux. 🎨 User-Friendly UI — Syntax highlighting, global hotkeys, themes, and a sleek design. 🔁 Regular Updates — New tools and improvements added continuously. (see changelog) - Generators: QR codes, UUIDs, dummy data, lorem ipsum, timestamps, and more. - Converters: JSON ⇄ CSV, HTML ⇄ JSX, Markdown ⇄ HTML, and more. - Debuggers: JSON, HTML, CSS, JavaScript, SQL — validate and troubleshoot with ease. - Formatters: Pretty-print code instantly with smart formatting options. - Utilities: Base64 encoder/decoder, hash tools (MD5, SHA), timestamp converters, etc.

DevKitHub is an all-in-one privacy-focused developer toolkit featuring over 50 utilities designed to enhance productivity. With 100% offline tools for secure data handling, it supports cross-platform use on macOS, Windows, and Linux. The user-friendly interface includes syntax highlighting and global hotkeys, ensuring a smooth experience for developers looking to generate, convert, debug, and format code efficiently.