Best API Developer Tools & Git for self-hosting

Hoppscotch

Developer Tools & Git

Open-source API development ecosystem

Replaces Postman, Insomnia

Full fake REST API from a JSON file in seconds

Replaces Mockoon, Postman Mock

Strapi

Developer Tools & Git

Leading open-source headless CMS

Replaces Contentful

NocoDB

Developer Tools & Git

Open-source Airtable alternative

Replaces Airtable

Build and share machine learning web interfaces fast

Replaces Retool

Comprehensive security scanner for containers and code

Replaces Snyk, Aqua

React framework for building internal tools and admin panels

Replaces Retool

SigNoz

Developer Tools & Git

Open-source APM and observability platform

Replaces Datadog, New Relic

Harbor

Developer Tools & Git

Cloud-native container registry with security

Replaces Docker Hub, Artifactory

Interactive documentation for OpenAPI specifications

Replaces Postman

Build full-stack web apps in pure Python

Replaces Streamlit, Retool

All-in-one project management and team collaboration

Replaces Linear, Jira

Generate clean API documentation from OpenAPI definitions

Replaces Stoplight, ReadMe

Infrastructure as code using general-purpose languages

Replaces Terraform, AWS CloudFormation

Automated dependency updates for many ecosystems

Replaces Dependabot

OpenObserve

Developer Tools & Git

Open-source observability platform for logs, metrics and traces

Replaces Datadog, Elasticsearch

Run and test HTTP requests with a plain text format

Replaces Postman, Insomnia

Unified backend framework for APIs, jobs and AI agents

Replaces Temporal, Inngest

Declarative full-stack web framework for React and Node

Replaces Firebase

Generate API tests and mocks from real traffic

Replaces Postman

Verdaccio

Developer Tools & Git

Lightweight private npm proxy registry

Replaces GitHub

Python UI framework for web-based dashboards and apps

Replaces Streamlit, Gradio

Modern OpenAPI documentation and API reference

Replaces Stoplight, ReadMe

Code generation platform for production-ready backends

Replaces Retool, Hasura

Web-based automation platform for Ansible

Replaces Ansible Tower

Semaphore UI

Developer Tools & Git

Modern web UI for Ansible, Terraform and more

Replaces Ansible Tower, AWX

Graph-relational database with a modern query language

Replaces Firebase, Supabase

Open-source reactive backend with a TypeScript database

Replaces Firebase

Powerful HTTP client that lives in your terminal

Replaces Postman, Insomnia

Backend framework with built-in infrastructure for Go and TS

Replaces AWS Amplify

Suite of web apps to build software faster

Replaces GitHub, Jira

Datasette

Developer Tools & Git

Explore and publish data from SQLite databases

Replaces Airtable

SonarQube

Developer Tools & Git

Continuous code quality and security inspection

Replaces GitHub

Toolkit to pack, ship, store and deliver container content

Replaces Docker Hub

Sentry

Developer Tools & Git

Application monitoring and error tracking platform

Replaces Bugsnag, Rollbar

Browser editor for designing and validating OpenAPI documents

Replaces Stoplight, Postman

Terraform pull request automation

Replaces Terraform Cloud, Spacelift

GitOps toolkit for keeping Kubernetes in sync

Replaces Spinnaker

Design and run mock REST APIs locally or self-hosted

Replaces Postman Mock Server

Evaluate, test and monitor ML and LLM models

Replaces Arize, WhyLabs

Manifest

Developer Tools & Git

Open-source backend defined from a single YAML file

Replaces Firebase, Supabase

Flexible API mocking and service virtualization

Replaces Mockoon, Postman Mock

Rundeck

Developer Tools & Git

Runbook automation and self-service operations

Replaces Ansible Tower

Redmine

Developer Tools & Git

Flexible project management and issue tracking

Replaces Jira

CloudBeaver

Developer Tools & Git

Web database management tool for many SQL and NoSQL engines

Replaces phpMyAdmin, DataGrip

OpenAPI-driven mock server and contract validation proxy

Replaces Postman, Stoplight

Intelligent software supply chain component analysis

Replaces Snyk

Terminal-based API client inspired by Postman

Replaces Postman, Insomnia

Property-based testing tool for APIs from their schema

Replaces Postman

Automation platform for Kubernetes development and testing

Replaces Skaffold, Tilt

Web user interface for the Docker Distribution registry

Replaces Docker Hub

Data transformation and modeling framework for SQL teams

Replaces dbt Cloud

Flexible JSON and YAML linter for OpenAPI and more

Replaces Stoplight Studio

Build internal tools and web apps from YAML config

Replaces Retool, Appsmith

Baserow

Developer Tools & Git

Open-source no-code database and Airtable alternative

Replaces Airtable

zot

Developer Tools & Git

Production-ready vendor-neutral OCI registry

Replaces Docker Hub, Harbor

Universal artifact repository manager

Replaces Artifactory

Lightweight service virtualization and API simulation

Replaces WireMock

API mocking and testing for cloud-native development

Replaces Postman Mock, WireMock

Command-line tools for working with container registries

Replaces docker CLI

Open-source API testing and monitoring toolkit

Replaces Postman Monitors

Review Board

Developer Tools & Git

Powerful code and document review tool

Replaces Crucible

React framework for building server-side web apps

Replaces Next.js

GlitchTip

Developer Tools & Git

Open-source error tracking and performance monitoring

Replaces Sentry, Bugsnag

Simple and efficient HTTP mock server

Replaces WireMock, Mockoon

Private PyPI server and packaging caching proxy

Replaces JFrog Artifactory

Self-hosted runtime for apps built with Anvil

Replaces Anvil Cloud, Retool

Unified source code management for Git, SVN and Mercurial

Replaces GitHub, Bitbucket

Phorge

Developer Tools & Git

Community-driven fork of Phabricator

Replaces GitHub, Jira

Scriptable, lightweight mock server for REST and SOAP APIs

Replaces WireMock