API Development, Mocking & Testing
8 self-hosted open source alternatives in this category
8 self-hosted open source alternatives in this category
8 services found

Open-source low-code platform for internal apps
Build and deploy internal tools fast with a low-code builder, prebuilt UI widgets, and secure integrations with databases, APIs, and SaaS services.

Open-source low-code platform for internal apps
Build internal tools fast with a low-code builder, database/API connectors, queries, and role-based access controls—self-hostable and extensible.

Composable commerce platform for building custom stores
Open-source, modular commerce backend for building custom eCommerce stores with APIs, admin dashboard, plugins, and integrations.


Flow-based programming for event-driven applications
Low-code, flow-based tool to wire devices, APIs, and services using a browser editor and Node.js runtime; widely used for IoT, automation, and integrations.


Self-hosted machine translation API with offline support
LibreTranslate is an open-source translation API and web UI for private, self-hosted machine translation with offline models and optional API keys/limits.


Self-hosted web toolbox for everyday developer and data tasks
A self-hosted, browser-based collection of utilities for encoding/decoding, text and data conversion, and other common developer-friendly tools in one place.

A generic JSON storage service with sync-friendly APIs
Self-hosted JSON storage server with REST APIs, versioning, auth, and sync primitives used by Mozilla for offline-first and synchronization use cases.


Instant admin app and API from your database
Open-source tool to generate an admin UI and REST API from your database schema, with authentication, role-based access, and extensible configuration.