Open source Developer Tools tools

45 open-source tools in this category.

Showing 45 results

OpenCode

OpenCode

Open-source, provider-agnostic AI coding agent for terminal, desktop, and IDE.

MIT-licensed alternative to Claude Code. Switch between 75+ LLM providers, run Build/Plan agents, and keep code local — terminal, desktop, or IDE extension.

aicoding-agentterminal
167.3K19.9KMIT
vs Claude Code
Dify

Dify

Open-source LLM app platform — visual workflow, RAG, agents, 100+ models.

Apache-2.0 platform with Prompt IDE, RAG pipelines, agent framework, and model management. Self-host with Docker or use cloud.dify.ai.

aiagentsrag
143.5K22.6KApache-2.0
vs OpenAI
Supabase

Supabase

Open-source Firebase alternative — Postgres, auth, storage, real-time.

Apache-2.0 platform with Postgres database, GoTrue auth, Edge Functions, Realtime subscriptions, and Storage. Self-host or cloud.

backenddatabasepostgres
103.3K12.6KApache-2.0
vs Firebase
Browser Use

Browser Use

Let AI agents control any browser — at scale, with structured data.

MIT-licensed Python library for AI browser automation. Playwright-based with multi-tab support, session persistence, and natural language task descriptions.

aibrowserautomation
96.6K10.8KMIT
vs Playwright
Zed

Zed

High-performance multiplayer code editor in Rust — GPU-accelerated, AI-native, built for speed.

Open-source alternative to VS Code from the Atom and Tree-sitter team. Real-time collaboration, native AI agents, built-in Git, and parallel agentic editing — macOS, Linux, and Windows.

code-editoriderust
84.1K8.8KGPL-3.0
vs VS Code
Hoppscotch

Hoppscotch

Sleek, intuitive API development and testing platform

Sleek, intuitive API development and testing platform

apitestingdevelopment
79.4K5.9KMIT
vs Postman
Daytona

Daytona

AI code execution infrastructure — 90ms boot sandboxes with full isolation for agents and automation, 72k+ GitHub stars

Lightning-fast AI code execution in secure sandboxes

aisandboxdevops
72.5K5.6KAGPL-3.0
vs GitHub Codespaces
NocoDB

NocoDB

Open-source Airtable alternative — any database becomes a spreadsheet.

AGPL-3.0 platform with Grid, Kanban, Gallery, Form, and Calendar views. Connects to MySQL, Postgres, SQLite with auto-generated REST/GraphQL APIs.

databaseno-codespreadsheet
63.2K4.8KAGPL-3.0
vs Airtable
Mem0

Mem0

Universal memory layer for AI agents — multi-signal retrieval, temporal reasoning, 57k+ GitHub stars

Give your AI apps persistent memory and intelligence

aimemoryllm
57.3K6.5KApache-2.0
vs Pinecone
Flowise AI

Flowise AI

Visual drag-and-drop builder for AI agents and LLM pipelines.

Apache-2.0 alternative to Langflow with chatflow and agentflow paradigms, embeddable chatbot widgets, and API endpoints. npm install and start.

aiagentsrag
53.3K24.5KApache-2.0
vs Langflow
LiteLLM

LiteLLM

Unified gateway for 100+ LLMs with spend tracking

LiteLLM is a Python SDK, Proxy Server (AI Gateway) to call 100+ LLM APIs in OpenAI format, with cost tracking, guardrails, loadbalancing and logging. Supports Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthropic, Sagemaker, HuggingFace, VLLM, NVIDIA NIM.

ai
48.8K8.5KCustom
vs OpenAI API
Twenty

Twenty

AI-native open-source CRM — customize objects, workflows, and apps like code.

AGPL-3.0 alternative to Salesforce. GraphQL/REST API, custom objects, MCP server, and Docker self-hosting — from $9/user cloud or free self-hosted.

aicrmsaas
48.6K6.9KAGPL-3.0
vs Salesforce
Bruno

Bruno

Git-friendly API client — collections as plain text files.

MIT-licensed alternative to Postman with native desktop app, bru markup language, and version control built in. No cloud sync required.

apitestinghttp
44.6K2.5KMIT
vs Postman
Milvus

Milvus

High-performance vector database — billion-scale AI similarity search.

Apache-2.0 alternative to Pinecone with HNSW/IVF/DiskANN indexing, GPU acceleration, and distributed architecture. Lite mode for development.

aivector-databaseembeddings
44.6K4KApache-2.0
vs Pinecone
Novu

Novu

Open-source notification infrastructure — in-app, email, SMS, push, and chat in one API.

MIT-licensed alternative to Customer.io. Workflow engine, React Inbox component, digest engine, and multi-channel delivery — self-hostable or Novu Cloud.

notificationsapiself-hosted
39K4.3KMIT
vs Customer.io
Directus

Directus

Headless CMS and data platform — wrap any SQL database with APIs.

Source-available alternative to Strapi and Contentful. REST and GraphQL APIs, real-time subscriptions, no-code admin, and flow automation.

cmsheadlessdatabase
36K4.8KBSL 1.1
vs Contentful
Multica

Multica

Universal AI agent framework — 50+ service integrations.

MIT-licensed agent platform with API, database, email, calendar, and cloud storage connectors. Multi-step workflows with memory and error recovery.

aicodingagents
35K0MIT
vs GitHub Copilot
CopilotKit

CopilotKit

Build AI copilots for your product — React components in minutes.

MIT-licensed framework with drop-in CopilotKit components, CoAgents for human-in-the-loop, and LangChain integration. Works with OpenAI, Anthropic, and custom LLMs.

aicopilotui
31.9K4.1KMIT
vs Vercel AI
Qdrant

Qdrant

High-performance vector database — semantic search at scale.

Apache-2.0 alternative to Pinecone with HNSW indexing, payload filtering, and distributed deployment. Rust engine with REST/gRPC APIs.

aivector-databasesearch
31.7K2.3KApache-2.0
vs Pinecone
Void

Void

Open-source Cursor alternative — VS Code fork with direct LLM access and no proprietary backend.

Apache-2.0 AI code editor with Agent/Gather modes, Tab autocomplete, and Ollama support. Your code goes straight to the provider — not through Void servers.

privacyaicode-editor
28.8K2.5KApache-2.0
vs Cursor
FastGPT

FastGPT

AI knowledge base platform — visual workflows and built-in RAG.

Apache-2.0 alternative to Dify with drag-and-drop workflow builder, document ingestion, and one-click API deployment. MongoDB + PostgreSQL backend.

airagknowledge-base
28.2K7.1KApache-2.0
vs Dify
Chroma

Chroma

Rust-based vector database for AI — serverless cloud with hybrid and full-text search for embeddings, metadata, and RAG

Open-source vector database for AI search and retrieval

aivector-databaseembeddings
28.2K2.3KApache-2.0
vs Pinecone
Supermemory

Supermemory

Memory layer for AI agents — hybrid vector search, ontology-aware graph, and sub-100ms retrieval

Lightning-fast memory API for AI applications

aimemoryapi
23.6K2.1KMIT
vs Pinecone
Letta

Letta

Stateful AI agents with persistent memory — formerly MemGPT, agents learn and self-improve over time

Build and deploy AI agents with advanced memory

aiagentsmemory
23.1K2.5KApache-2.0
vs LangChain
CodeEdit

CodeEdit

Native macOS code editor in Swift — lightweight, open-source, and free forever.

MIT-licensed VS Code alternative built for Mac with Tree-sitter, Git, terminal, and debugging. Community-driven, Apple HIG native — pre-release, macOS only.

code-editorideswift
22.9K1.2KMIT
vs VS Code
Krayin

Krayin

Self-hosted Laravel CRM for leads, pipelines, and customer lifecycle management.

MIT-licensed alternative to Salesforce. Kanban leads, quotes, email sync, and modular extensions — built on Laravel and Vue.js for SMEs and enterprises.

crmenterpriselaravel
22.6K1.5KMIT
vs Salesforce
Skyvern

Skyvern

AI browser automation — computer vision for web workflows.

AGPL-3.0 alternative to Browser Use with visual understanding, form filling, and multi-tab support. Python + Playwright stack.

aiautomationbrowser
21.8K2KAGPL-3.0
vs Selenium
Suna

Suna

AI agent that autonomously handles real-world tasks.

Source-available agent platform with browser automation, file management, and web scraping. Deploy autonomous agents for research and operations.

aiagentsautomation
19.8K3.4KSource-available
vs AutoGPT
Kilo

Kilo

Open-source agentic engineering platform — 500+ models in VS Code, JetBrains, and CLI.

MIT-licensed alternative to Cursor. Architect, Coder, and Debugger modes with MCP marketplace, browser automation, and optional API keys via Kilo Gateway.

aicode-editorvscode-fork
19.7K2.6KMIT
vs Cursor
Weaviate

Weaviate

AI-native vector database with semantic search, RAG, and hybrid search for building AI agents and applications

AI-native vector database for intuitive applications

aivector-databaseembeddings
16.3K1.3KBSD-3-Clause
vs Pinecone
Activeloop

Activeloop

Tensor database and multimodal data lake for AI — serverless Postgres-based vector store with semantic search for text, images, audio, video, and 3D data

The tensor database for AI data

aivector-databasedata
9.2K710Apache-2.0
vs Databricks
Tolgee

Tolgee

In-context localization — Alt+click to translate in your live app.

Apache 2.0 alternative to Crowdin with SDK integrations for React, Vue, and more. AI translation, MCP server for coding assistants, and Docker self-hosting.

i18nlocalizationtranslation
3.9K355Apache 2.0
vs Crowdin
EspoCRM

EspoCRM

Simple, customizable open-source CRM — self-hosted since 2014.

AGPL-3.0 alternative to Salesforce. Leads, pipeline Kanban, email marketing, customer portal, and Entity Manager customization — Docker or manual install.

crmsaas
3K867AGPL-3.0
vs Salesforce
Laminar

Laminar

Agent observability and evaluation platform — signal alerts, trace debugging, and automated evals for LLM products

AI-powered platform for engineering LLM products

aillmobservability
3K203Apache-2.0
vs LangSmith
Deepnote

Deepnote

Jupyter-replacement data notebook with AI-first reactive execution, SQL blocks, and real-time collaboration

Python, SQL, and AI in a collaborative data notebook

ainotebooksdata-science
2.9K193Apache-2.0
vs Google Colab
Frappe CRM

Frappe CRM

Fully featured open-source CRM — unlimited users, Frappe-powered.

AGPL-3.0 alternative to HubSpot from the ERPNext team. Lead/deal pipeline, SLA rules, email integration, and Vue.js UI — Frappe Cloud or Docker self-hosting.

crmsaas
2.8K1.1KAGPL-3.0
vs HubSpot
Beam

Beam

Serverless GPU platform with sub-second cold starts — deploy AI inference, training, and sandboxes with automatic scaling

Ultrafast AI infrastructure with instant scaling

aiinfrastructureserverless
1.7K143AGPL-3.0
vs Modal
Open Mercato

Open Mercato

AI-engineering framework for CRM/ERP — start at 80% done.

MIT modular monolith with pre-built CRM, sales, and ERP modules. Architecture-aware AI harness, multi-tenant RBAC, and spec-first development for Cursor/Claude Code.

aicrmerp
1.3K281MIT
vs Salesforce
Relaticle

Relaticle

Self-hosted CRM with 30 MCP tools — built for AI agents.

AGPL-3.0 alternative to HubSpot with native MCP server and REST API. Laravel 12, Filament 5, 22 custom field types, and multi-team isolation.

aicrmlaravel
1.3K148AGPL-3.0
vs HubSpot
Voiden API Client

Voiden API Client

Offline, Git-native API client — Markdown specs, zero cloud lock-in.

Apache 2.0 alternative to Postman. Design, test, and document APIs in `.void` Markdown files — composable blocks, no accounts, no telemetry.

apiclientapi clientapi ide
1.1K42Apache 2.0
vs Postman
Atomic CRM

Atomic CRM

Full-featured CRM in React + Supabase — fork and deploy in minutes.

MIT CRM by Marmelab (React Admin). Contacts, deals Kanban, tasks, email capture — ~15k LOC with shadcn/ui, deploy to Supabase + GitHub Pages.

crmsaasreact
1K680MIT
vs Salesforce
Passmak

Passmak

AI Playwright regression testing — plain English, Redis caching, auto-healing.

FSL-licensed library from Bug0/Hashnode. Write E2E tests in natural language, cache steps in Redis for native-speed replays, multi-model assertions — runs inside @playwright/test.

testingplaywrightai
846160FSL-1.1-ALv2
vs Playwright
PearAI

PearAI

Open-source AI code editor — VS Code fork with Continue-based chat and model router.

Apache-2.0 alternative to Cursor. Local codebase context, BYOK or PearAI Router subscription, familiar VS Code experience with integrated AI.

aicode-editorvscode-fork
74765Apache-2.0
vs Cursor
mlop

mlop

MLOps platform with W&B-compatible API — experiment tracking, model registry, and collaboration for ML teams

Track and optimize machine learning experiments with precision

mlopsmachine-learningexperiments
38010Apache-2.0
vs MLflow
Proxed AI

Proxed AI

Secure AI API management for iOS apps with DeviceCheck

Proxed.AI is a secure proxy backend for iOS apps that protects your AI API keys and controls AI responses. Uses Apple DeviceCheck to lock down API keys and provides a visual schema builder to structure AI outputs.

ai
60AGPL-3.0
vs Custom proxy