API Development, Mocking & Testing
8 self-hosted open source alternatives in this category
8 services found
Appsmith
Open-source low-code platform for internal apps
38.9k
4.4k
Last commit: 2d ago
Build and deploy internal tools fast with a low-code builder, prebuilt UI widgets, and secure integrations with databases, APIs, and SaaS services.
Alternative to:
Retool+9
ToolJet
Open-source low-code platform for internal apps
37.1k
4.9k
Last commit: 2d ago
Build internal tools fast with a low-code builder, database/API connectors, queries, and role-based access controls—self-hostable and extensible.
Alternative to:Retool+5
Medusa
Composable commerce platform for building custom stores
31.6k
4k
Last commit: 1d ago
Open-source, modular commerce backend for building custom eCommerce stores with APIs, admin dashboard, plugins, and integrations.
Alternative to:
Shopify+5
Node-RED
Flow-based programming for event-driven applications
22.6k
3.8k
Last commit: 2d ago
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.
Alternative to:
IFTTT+5
LibreTranslate
Self-hosted machine translation API with offline support
13.5k
1.4k
Last commit: 18d ago
LibreTranslate is an open-source translation API and web UI for private, self-hosted machine translation with offline models and optional API keys/limits.
Alternative to:
Google Cloud Translation+6
OmniTools
Self-hosted web toolbox for everyday developer and data tasks
8.1k
492
Last commit: 1mo ago
A self-hosted, browser-based collection of utilities for encoding/decoding, text and data conversion, and other common developer-friendly tools in one place.
Alternative to:
CyberChef (hosted/online instances)+3
Kinto
A generic JSON storage service with sync-friendly APIs
4.4k
420
Last commit: 2d ago
Self-hosted JSON storage server with REST APIs, versioning, auth, and sync primitives used by Mozilla for offline-first and synchronization use cases.
Alternative to:
Firebase+3
Manifest
Instant admin app and API from your database
3.3k
150
Last commit: 1d ago
Open-source tool to generate an admin UI and REST API from your database schema, with authentication, role-based access, and extensible configuration.
Alternative to:Retool+4