Best alternatives to Posting in 2026

Postman and Insomnia are the default choice for testing APIs, but they're GUI apps: they don't work over an SSH session to a remote server, and their request collections often live in a proprietary format that's awkward to review in a pull request. Posting solves both problems by being a full API client that runs inside the terminal, storing every request as a human-readable YAML file that works naturally with git. Posting offers keyboard-driven "jump mode" navigation, vim keybindings, environment variables, autocompletion and tree-sitter-based syntax highlighting, customizable themes and keybindings, and even Python scripting to run before or after a request. It can import from cURL commands, Postman collections and OpenAPI specs, and includes a command palette for quick actions. It's free, open source (Apache-2.0) and built on the Textual framework, with 12.3k GitHub stars and steady development (1,279+ commits).