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Open Source Projects tagged "Api"

A curated collection of the best open source projects tagged "Api". Each listing includes a website screenshot along with a detailed review of its features.

Openlane

Continuous compliance automation for SOC 2, ISO 27001 & more

  • Stars

    Stars growing over the last 30 days334

  • Last commit

    9 hours ago

  • License

    Apache-2.0
Automates evidence collection, control tracking, and audit reporting across SOC 2, ISO 27001, NIST 800-53, GDPR, and 12+ other frameworks in one platform.

Open Source Alternative to:

Vanta

Neovim

Hyperextensible, Lua-powered Vim-based text editor

  • Stars

    103,173

  • Last commit

    7 hours ago

  • License

    Unknown
A modernized Vim fork with built-in LSP, Lua scripting, Tree-sitter parsing, and an async plugin architecture that works the same across every platform.

Open Source Alternative to:

Cursor

Hoppscotch

Sleek, intuitive API development and testing platform

  • Stars

    80,684

  • Last commit

    5 hours ago

  • License

    MIT
Lightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.

Open Source Alternative to:

Postman

Strapi

Headless CMS with REST and GraphQL APIs out of the box

  • Stars

    73,381

  • Last commit

    1 day ago

  • License

    MIT
TypeScript headless CMS that generates REST and GraphQL APIs from your content model, with a no-code builder, plugin system, and full self-hosting support.

Open Source Alternative to:

Sanity

LocalAI

AI
Self-hosted AI runtime for text, voice, vision, and agents

  • Stars

    49,964

  • Last commit

    4 hours ago

  • License

    MIT
Run LLMs, speech, image generation, and autonomous agents on your own hardware with an OpenAI-compatible API and 60+ swappable backends.

Open Source Alternative to:

LM Studio

Meilisearch

Lightning-fast search for your applications

  • Stars

    59,672

  • Last commit

    3 days ago

  • License

    MIT
A powerful, fast, and easy-to-use search engine that delivers instant and relevant results for your websites and applications.

Open Source Alternative to:

ElasticSearch

Insomnia

Powerful API development and testing made effortless

  • Stars

    40,079

  • Last commit

    4 hours ago

  • License

    Apache-2.0
Intuitive API client for REST, GraphQL, and gRPC. Debug, test, and collaborate on APIs with ease across platforms.

Open Source Alternative to:

Postman

Directus

Open-source data platform for effortless content management

  • Stars

    38,634

  • Last commit

    3 days ago

  • License

    Unknown
A versatile headless CMS and API engine that simplifies data management, content creation, and application development.

Open Source Alternative to:

WordPress

Skyvern

AI
Automate any website workflow with AI and computer vision

  • Stars

    23,276

  • Last commit

    11 hours ago

  • License

    AGPL-3.0
Transform manual browser tasks into automated workflows using AI. Handle complex forms, CAPTCHAs, 2FA, and data extraction across any website at scale.

Open Source Alternative to:

Browserbase

Maxun

AI
No-code web scraping, crawling, and extraction platform

  • Stars

    18,045

  • Last commit

    5 hours ago

  • License

    AGPL-3.0
Turn any website into structured data using a visual recorder, natural language prompts, or API. Includes proxy rotation, scheduling, and webhook integrations.

Open Source Alternative to:

Jina AI

Bitwarden

Secure password management for individuals and businesses

  • Stars

    20,479

  • Last commit

    5 hours ago

  • License

    AGPL-3.0
Bitwarden is an open source password manager that securely stores, shares, and autofills passwords across unlimited devices.

Open Source Alternative to:

1Password

Apache APISIX

High-performance API gateway with built-in LLM support

  • Stars

    17,251

  • Last commit

    5 hours ago

  • License

    Apache-2.0
Apache APISIX is an open-source API gateway built on NGINX and etcd, offering dynamic routing, 100+ plugins, load balancing, authentication, and traffic management for APIs and LLM workloads.

Open Source Alternative to:

Kong

LibreTranslate

Free offline machine translation API you can host yourself

  • Stars

    17,185

  • Last commit

    9 hours ago

  • License

    AGPL-3.0
Self-hosted machine translation API that works offline. Download, setup, and run your own translation server in minutes with complete privacy control.

Open Source Alternative to:

Google Translate

Scalar

Open-source API documentation and testing platform

  • Stars

    16,319

  • Last commit

    1 day ago

  • License

    MIT
Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.

Open Source Alternative to:

Postman

AITable

Visual database for workflow automation across apps

  • Stars

    15,650

  • Last commit

    2 months ago

  • License

    AGPL-3.0
AITable.ai offers a visual database platform that simplifies workflow automation and connects to over 6,000 apps through integrations like Zapier and Make.

Open Source Alternative to:

Airtable

Nango

Build product integrations with 500+ APIs in hours

  • Stars

    Stars growing over the last 30 days12,994

  • Last commit

    13 hours ago

  • License

    Elastic-2.0
Complete integrations platform with 500+ pre-built APIs, code-first approach, unified data models, and enterprise-grade security. Free tier available.

Open Source Alternative to:

Pipedream

Encore

Accelerate backend development with effortless scalability

  • Stars

    12,594

  • Last commit

    4 days ago

  • License

    MPL-2.0
A powerful platform for building cloud backends, automating infrastructure, and simplifying development workflows for faster, more efficient coding.

Open Source Alternative to:

Supabase

Manticore Search

Lightning-fast open source search engine for big data

  • Stars

    12,071

  • Last commit

    6 hours ago

  • License

    GPL-3.0
Open source search database delivering 2.83x faster performance than Elasticsearch. Features vector search, SQL interface, and full-text capabilities.

Open Source Alternative to:

ElasticSearch

Tyk

Universal API management for REST, GraphQL, gRPC & async

  • Stars

    10,870

  • Last commit

    5 hours ago

  • License

    Unknown
Fast, scalable API management platform with open source gateway, analytics, dev portal and dashboard. Deploy anywhere with AI-ready governance and security.

Open Source Alternative to:

Kong

Vendure

Flexible e-commerce for modern businesses

  • Stars

    8,544

  • Last commit

    1 day ago

  • License

    MIT
A headless, API-first e-commerce framework built on Node.js with TypeScript, offering customization and scalability for online stores.

Open Source Alternative to:

Magento

Mockoon

Effortless API mocking for seamless development

  • Stars

    8,460

  • Last commit

    2 days ago

  • License

    MIT
Create, run, and share mock REST APIs without coding. Boost productivity with an intuitive interface and powerful features.

Open Source Alternative to:

Postman

Requestly

Intercept, modify, and debug HTTP(S) requests effortlessly

  • Stars

    6,755

  • Last commit

    7 hours ago

  • License

    AGPL-3.0
A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing

Open Source Alternative to:

Postman

UnKey

Secure, scalable API key management for developers

  • Stars

    5,477

  • Last commit

    4 hours ago

  • License

    AGPL-3.0
Streamline API authentication with UnKey's powerful, developer-friendly platform for creating, revoking, and monitoring API keys.

Open Source Alternative to:

Kong

Vikunja

Organize, collaborate, and conquer your tasks

  • Stars

    Stars growing over the last 30 days5,857

  • Last commit

    7 hours ago

  • License

    AGPL-3.0
A powerful, open-source task management platform for teams and individuals, offering customizable workflows and seamless integration.

Open Source Alternative to:

Linear

ACI.dev

AI
Build reliable AI agents with unified tool integration

  • Stars

    4,924

  • Last commit

    3 days ago

  • License

    Apache-2.0
Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server

Open Source Alternative to:

Pipedream

Chartbrew

Create stunning data visualizations with ease

  • Stars

    4,063

  • Last commit

    6 days ago

  • License

    MIT
A powerful, open-source platform for building interactive dashboards and charts from multiple data sources without coding.

Open Source Alternative to:

Power BI

Svix

Webhook delivery platform with retries, security, and a portal

  • Stars

    3,464

  • Last commit

    3 days ago

  • License

    MIT
Add customer-facing webhooks to your product without building the infrastructure. Handles retries, signatures, multi-tenancy, filtering, and monitoring at scale.

Open Source Alternative to:

Zapier

Stoat

Group chat for friends and communities, without the baggage

  • Stars

    3,421

  • Last commit

    2 days ago

  • License

    Unknown
Self-hostable group chat with servers, channels, voice, and moderation tools. No ads, no data mining, built under EU privacy law.

Open Source Alternative to:

Discord

LearnHouse

Create, sell, and manage online courses with full control

  • Stars

    Stars growing over the last 30 days2,415

  • Last commit

    16 hours ago

  • License

    AGPL-3.0
Open-source LMS for building and selling courses with a block-based editor, built-in payments, AI tools, analytics, and white-labeling. Self-host or use the cloud.

Open Source Alternative to:

Udemy

Notifuse

Self-hosted email platform with visual editor & analytics

  • Stars

    2,261

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Free open-source email platform for newsletters and transactional emails. Self-hosted alternative to Mailchimp with visual MJML editor, A/B testing, and analytics.

Open Source Alternative to:

Resend

HTTPie

Modern command-line HTTP client for the API era

  • Stars

    4,048

  • Last commit

    2 years ago

  • License

    BSD-3-Clause
Intuitive, user-friendly CLI tool for making HTTP requests, debugging APIs, and testing web services with ease and efficiency.

Open Source Alternative to:

Postman

Voiden

Build APIs like code with Git-native workspace

  • Stars

    Stars growing over the last 30 days1,896

  • Last commit

    7 hours ago

  • License

    Apache-2.0
Offline-first API workspace that unifies specs, docs, tests, and mocks in programmable Markdown blocks. Version control everything in plain text files.

Open Source Alternative to:

Postman

Firecamp

Unified API development ecosystem for modern teams

  • Stars

    2,618

  • Last commit

    8 months ago

  • License

    AGPL-3.0
All-in-one platform for API testing, documentation, and collaboration, simplifying the entire API development lifecycle.

Open Source Alternative to:

Postman

Fusio

API management platform for developers and AI agents

  • Stars

    2,127

  • Last commit

    5 days ago

  • License

    Apache-2.0
Open source API management platform that exposes databases as REST, routes microservice traffic, handles billing, and generates SDKs across multiple languages.

Open Source Alternative to:

Postman

OpenSERP

Self-hosted SERP API for Google, Bing, Yandex, and more

  • Stars

    Stars growing over the last 30 days1,499

  • Last commit

    15 hours ago

  • License

    MIT
Query Google, Bing, Yandex, Baidu, DuckDuckGo, and Ecosia through one REST API. Self-host free under MIT, or use the managed cloud option.

Open Source Alternative to:

Tavily

Meteroid

Flexible billing infrastructure for modern SaaS

  • Stars

    Stars growing over the last 30 days1,342

  • Last commit

    5 days ago

  • License

    AGPL-3.0
Open-source pricing and billing platform that helps SaaS companies launch, test, and scale complex billing models with ease. Features metering, invoicing, and real-time data.

Open Source Alternative to:

Stripe Billing

ByteChef

AI
Build AI agents and automate complex workflows seamlessly

  • Stars

    Stars growing over the last 30 days1,048

  • Last commit

    5 hours ago

  • License

    Apache-2.0
Create intelligent automation workflows combining AI agents with your favorite apps and services. Connect, automate, and scale your operations without complex coding.

Open Source Alternative to:

n8n

Hive

Open-source GraphQL federation platform

  • Stars

    483

  • Last commit

    12 hours ago

  • License

    MIT
A fully open-source schema registry, analytics, and gateway for GraphQL federation and APIs

Open Source Alternative to:

Apollo GraphQL

Gravitee

Unified API, event, and AI agent management platform

  • Stars

    462

  • Last commit

    5 hours ago

  • License

    Apache-2.0
Full-lifecycle API management platform that unifies synchronous and asynchronous ecosystems. Manage APIs, event streams, and AI agents with enterprise security and 4x faster gateway performance.

Open Source Alternative to:

Postman

Phrasea

Self-hosted DAM with fast search and asset workflows

  • Stars

    26

  • Last commit

    1 day ago

  • License

    MIT
Self-hostable digital asset management platform with Elasticsearch-powered search, AI-assisted indexing, granular permissions, and API-first architecture for teams of any size.

Open Source Alternative to:

Brandfolder
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