Showing 32 results
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.
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.
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.
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.
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.
Hoppscotch
Sleek, intuitive API development and testing platform
Sleek, intuitive API development and testing platform
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
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Letta
Stateful AI agents with persistent memory — formerly MemGPT, agents learn and self-improve over time
Stateful AI agent framework with persistent memory — formerly MemGPT. Agents learn, self-improve, and retain context across sessions. Open-source alternative to LangChain.
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.
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.
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.
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.
Activeloop
Tensor database for AI — store, version, and query multimodal datasets with semantic search for text, images, audio, video, and 3D data
Multimodal tensor database for AI pipelines — store, version, and query datasets of text, images, audio, video, and 3D data. Open-source alternative to Databricks and Snowflake.
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.
Laminar
Agent observability and evaluation platform — signal alerts, trace debugging, and automated evals for LLM products
Open-source LLM observability platform — trace debugging, signal alerts, and automated evaluations for AI products. Alternative to LangSmith and Helicone.
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
Beam
Serverless GPU cloud for AI — sub-second cold starts, automatic scaling for inference, training, and sandboxes
Serverless GPU cloud with sub-second cold starts — deploy AI inference, model training, and sandboxes with automatic scaling. Open-source alternative to Modal and Replicate.
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.
Passmark
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.
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.
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
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.
Developer Tools is the broadest category on the site, spanning AI coding agents, API clients, headless backends, LLM infrastructure, and observability — over 30 tools in total.
If you're looking for AI-assisted coding, OpenCode, Zed, Void, and Kilo are the most active projects — see alternatives to Cursor and alternatives to GitHub Copilot for a fuller comparison. For API development and testing, Bruno and Hoppscotch cover most of what Postman offers. If you need a backend-as-a-service, Supabase is the most established option. For LLM tracing and observability specifically, check the Analytics category instead.
FAQ
What's the best open-source AI coding assistant?
OpenCode is the most active provider-agnostic option; Void is the closest match if you want a Cursor-style VS Code fork. See alternatives to Cursor for a full breakdown.
What's the best open-source API client?
Bruno if Git-based collaboration on collections matters to you; Hoppscotch if you want a lighter, browser-based client. See alternatives to Postman for more detail.
Is there an open-source alternative to Firebase for backend infrastructure?
Yes — Supabase is the most widely adopted open-source backend-as-a-service, covering Postgres, auth, storage, and real-time subscriptions. See alternatives to Firebase.
Where do I find LLM observability and tracing tools?
Those live in the Analytics category — see alternatives to LangSmith and alternatives to Datadog for the AI-specific options.