# Free Tier

Fast, native terminal emulator

GPU-accelerated terminal emulator written in Zig by Mitchell Hashimoto (HashiCorp co-founder). Native UI rendering on macOS and Linux. Supports ligatures, true color, Kitty graphics protocol, and splits/tabs. Configurable via a simple key-value file with sensible defaults. Open-source with 20K+ GitHub stars and a focus on correctness, speed, and minimal resource usage. Growing as a modern alternative to iTerm2, Alacritty, and WezTerm.

Ultra-fast LPU inference for open-weight models

Groq is an AI inference provider built around custom Language Processing Unit (LPU) hardware for low-latency open-weight model serving. GroqCloud exposes an OpenAI-compatible API for Llama, GPT-OSS, Qwen, Kimi, DeepSeek, Gemma, Whisper, and related models, with high token-throughput positioning, model-specific rate limits, and usage-based pricing.

Drop-in authentication for modern JavaScript apps

Clerk is a complete authentication and user management platform for React, Next.js, and modern JavaScript frameworks. It provides pre-built UI for sign-in, sign-up, user profiles, organizations, MFA, passkeys, JWT sessions, webhooks, and billing. The Hobby plan supports up to 50,000 monthly retained users per app, with Pro, Business, and Enterprise tiers for growing teams.

Low-cost reasoning and coding models with V4 API options

Chinese AI research lab developing low-cost reasoning and coding models with a fast-moving hosted API surface. Current API docs foreground DeepSeek V4 Flash and V4 Pro with thinking/non-thinking modes, OpenAI- and Anthropic-compatible endpoints, 1M context, JSON output, tool calls, and chat-prefix/FIM options. Free chat assistant and API access are available, while open-weight/self-hosting claims should be checked against current model repositories.

Collaborative design platform

Figma is the industry-standard collaborative design platform for UI/UX work, prototyping, and design systems. Runs in the browser with real-time multiplayer editing, components, auto-layout, variants, dev mode, plugins, and FigJam whiteboards. Integrates with AI design-to-code tools like Lovable, v0, Builder.io, and Anima to turn frames into production React, Vue, or iOS/Android code.

The GitHub of ML — model hub, datasets, and inference

Open-source platform for building, sharing, and deploying machine learning models and datasets. Hosts 500k+ models, 100k+ datasets, and Spaces for interactive demos. The central hub of the open-source AI ecosystem, providing model discovery, inference APIs, and collaborative tools that make it the GitHub of machine learning for researchers and developers worldwide.

Serverless Postgres

Serverless Postgres platform separating storage and compute for branching, autoscaling, read replicas, instant restore, and scale-to-zero workloads. Neon works with standard PostgreSQL clients and ORMs, supports extensions such as pgvector, and sits inside a broader Neon backend platform with Auth, Data API, Functions, Object Storage, and AI Gateway features.

Productivity launcher for macOS

Blazingly fast, extensible productivity launcher for macOS that replaces Spotlight and serves as a keyboard-driven command center. Includes instant app launching, clipboard history, snippet management, window management, calculator, and a built-in AI chat with multiple models. Extension store with 1,000+ community integrations (GitHub, Jira, Linear, Docker). Script commands for shell automation, plus a React/TypeScript API for custom extensions.

The open-source Firebase alternative

Open-source Firebase alternative providing a full backend-as-a-service on PostgreSQL. Auto-generated REST and GraphQL APIs from your schema, real-time subscriptions, built-in auth with 20+ social providers and Row Level Security, S3-compatible file storage with CDN, and Deno-powered Edge Functions. Visual dashboard with SQL editor and table editor. Supports pgvector for AI apps. Self-hostable or managed with a generous free tier. 75K+ GitHub stars.

The industry standard code editor

Microsoft's free, open-source code editor that has become the most widely used development environment in the world. Lightweight but powerful, with built-in Git, integrated terminal, IntelliSense, debugger, and tens of thousands of extensions. Recent updates add Agent mode for delegating coding tasks to AI, Model Context Protocol (MCP) support, and Next Edit Suggestions. Native GitHub Copilot, remote development via SSH/containers/WSL, and a browser version at vscode.dev.

Official MCP server for GitHub repo operations

GitHub MCP Server is the official Model Context Protocol server from GitHub that connects AI assistants to repositories, issues, pull requests, workflows, and code search. It exposes 100+ operations with toolset filtering, permission scoping, and audit logging, available in both remote-hosted and self-hosted Docker deployment modes.

Issue tracking built for software

Fast, opinionated project management for software teams with a keyboard-first interface, cycles, roadmaps, and deep GitHub/GitLab integration. Used by Vercel, Anthropic, and Coinbase. The modern Jira alternative that engineering teams actually enjoy using, with a clean design and responsive UI that makes issue tracking feel effortless rather than burdensome.

Frontend cloud platform

Frontend cloud platform and the creators of Next.js, providing instant Git-push deployments, a global edge network, and serverless compute for modern web apps. Automatic preview URLs for every pull request, Edge Functions for low-latency dynamic content, Image Optimization, Web Analytics, and the Vercel AI SDK for building AI-powered apps. Supports Next.js, React, Svelte, Nuxt, Astro, and all major frameworks. Generous free tier for personal projects and used by enterprises like Washington Post.

Enterprise identity platform by Okta

Auth0 is an enterprise identity platform by Okta providing authentication, authorization, and user management as a service. Supports social login, passwordless, MFA, SAML, OIDC, machine-to-machine auth, and custom database connections. Features Actions for serverless extensibility, Organizations for B2B multi-tenancy, and adaptive MFA with risk assessment. SDKs for all major platforms. Free tier includes 25,000 MAU. Used by thousands of enterprises globally.

AI-powered code review

AI-powered code review tool that automatically analyzes pull requests and provides line-by-line feedback on code quality, bugs, security vulnerabilities, and best practices. Integrates with GitHub and GitLab as a bot that comments on PRs. Uses LLMs to understand code context and suggest improvements. Learns from your codebase patterns and team preferences. Supports all major programming languages. Reduces review cycle time while catching issues human reviewers might miss.

Open-weight frontier lab with Vibe, Studio, and a European AI cloud

Mistral AI is the French frontier-AI lab behind open-weight and commercial models, Mistral Vibe (formerly Le Chat), Studio, agentic coding, and the European-hosted Mistral Compute cloud. It gives developers an EU-centered alternative across API, assistant, agent-platform, and sovereign-infrastructure workflows, with model-specific licensing and pricing that should be checked per workload.

Run LLMs locally with one command

Tool for running large language models locally on your machine with a simple CLI interface. Download and run Llama 3, Mistral, Gemma, Phi, Code Llama, and dozens of other open-source models with a single command. Features model management, GPU acceleration (NVIDIA/AMD/Apple Silicon), OpenAI-compatible API server, Modelfile for customization, and multi-model switching. Ideal for offline AI development, privacy-sensitive use cases, and local testing. 120K+ GitHub stars.

Self-hosted AI platform with ChatGPT-like interface for local and cloud LLMs.

Extensible, self-hosted AI platform with 290M+ Docker pulls and 124K+ GitHub stars. Supports Ollama, OpenAI-compatible APIs, and any Chat Completions backend. Features built-in RAG, multi-user RBAC, voice/video calls, Python function workspace, model builder, and web browsing. Runs entirely offline with enterprise features including SSO and audit logging.

2x faster LLM fine-tuning with 70% less VRAM on a single GPU

Unsloth is an open-source framework for fine-tuning large language models up to 2x faster while using 70% less VRAM. Built with custom Triton kernels, it supports 500+ model architectures including Llama 4, Qwen 3, and DeepSeek on consumer NVIDIA GPUs. Unsloth Studio adds a no-code web UI for dataset creation, training observability, model comparison, and GGUF export for Ollama and vLLM deployment.

No-code automation platform connecting 9,000+ apps

The most popular no-code automation platform connecting 9,000+ apps and app connections to automate workflows without writing code. Features multi-step Zaps with conditional logic, AI Copilot for natural language workflow creation, Tables, Forms, and MCP integration for AI orchestration. Task-based pricing with a free tier at 100 tasks/month. Used by businesses from solo operators to enterprise teams for eliminating repetitive work across their software stack.

Apache-2.0 Python framework for building MCP servers, clients, apps, and deployable agent tool surfaces.

FastMCP is an Apache-2.0 Python framework for building MCP servers, clients, and apps with decorators, type hints, transports, auth patterns, deployment docs, and telemetry hooks. The project now resolves to PrefectHQ/fastmcp, with Prefect Horizon available as a separate enterprise MCP gateway for identity, RBAC, audit, monitoring, and server governance.

Merge queue, CI insights, flaky-test controls, and stacked pull requests for GitHub teams

Mergify is a pull request automation platform that keeps main branches green with merge queue batching, merge protections, CI Insights, flaky-test detection, and stacked pull requests. Its Stacks workflow turns commits on one local branch into focused PR chains, helping teams review large AI-generated or feature-heavy changes without losing queue safety.

AI-powered answer engine with real-time citations

AI search engine that provides sourced, citation-backed answers by searching the web in real time. Pro tier unlocks unlimited queries, file uploads, and access to GPT-4o, Claude, and Sonar models. Available on web, iOS, Android, and as an API. The leading AI-powered search alternative that combines the convenience of conversational AI with the reliability of cited, verifiable sources.

Plain English QA testing for rapid MVPs

Stably enables developers to create QA tests in plain English using a no-code editor, with AI ensuring tests remain valid as the application evolves through self-healing locators and assertions. It lowers the barrier to high-quality QA for startups by eliminating the need for scripting knowledge, automatically adapting test steps when UI elements change position or structure.

Memory engine and context API for AI assistants

Supermemory is a memory and context platform for AI assistants and agents. It ranks #1 on LongMemEval, LoCoMo, and ConvoMem, supports MCP for Claude/Cursor-style clients, provides plugins for developer tools, and combines memory extraction, user profiles, hybrid search, connectors, and RAG in one API.

Unified code-to-cloud security platform for developers

Aikido Security is an all-in-one AppSec platform unifying SAST, DAST, SCA, CSPM, secrets detection, container scanning, IaC analysis, and runtime protection in a single developer-friendly dashboard. Cuts false positive noise by 95% through reachability analysis that evaluates vulnerabilities in actual deployment context. Features AI AutoFix for one-click remediation, CI/CD gating, and AI-powered pentesting agents. Trusted by 50,000+ organizations. Supports 50+ programming languages.

All-in-one self-hosted AI app with RAG, agents, and multi-user support

AnythingLLM is an open-source, privacy-first AI application that turns any document into an interactive knowledge base. It bundles document ingestion, vector storage (built-in LanceDB), RAG pipelines, AI agents, and multi-user access into a single deployable package. Supports 30+ LLM providers including OpenAI, Anthropic, Ollama, and local models. With 62K+ GitHub stars and MIT license, it runs as a desktop app or Docker container with zero configuration required out of the box.

Visual testing for Storybook

Chromatic is a Storybook-first visual testing and UI review platform for design systems and frontend teams. It publishes Storybook, captures component snapshots, reviews pull-request diffs, and supports interaction tests, accessibility checks, TurboSnap, SteadySnap, Playwright/Cypress workflows, and Storybook MCP context.

Embedded vector database for multimodal AI with petabyte scale

LanceDB is an open-source embedded vector database built on the Lance columnar format for multimodal AI. It delivers near in-memory performance from disk with zero-copy architecture, supporting vector search, full-text search, and SQL. Native SDKs for Python, TypeScript, and Rust integrate with LangChain, LlamaIndex, and DuckDB. Backed by a $30M Series A, used by Harvey AI and Runway, with 18,000+ GitHub stars.

Connected workspace for teams

All-in-one workspace combining notes, wikis, project management, databases, and documents in a single flexible platform. Features a block-based editor supporting rich text, tables, kanban boards, calendars, galleries, and embeds. Powerful databases with relations, rollups, formulas, and filtered views. Includes Notion AI for writing assistance, team collaboration with permissions, templates gallery, and API for integrations. Used by millions for personal and team knowledge management.

Pack your entire codebase into a single AI-friendly file

Repomix packages entire repositories into single AI-optimized files for feeding to LLMs like Claude, ChatGPT, and Gemini. It outputs XML, Markdown, JSON, or plain text with token counting, security scanning via Secretlint, and Tree-sitter-based code compression. Works as CLI, MCP server, or Chrome extension for GitHub. Supports Claude Agent Skills generation. 26K+ GitHub stars, MIT licensed, with a web interface at repomix.com for zero-install usage.

Developer-first security platform

Snyk is the leading developer security platform providing continuous scanning for vulnerabilities in code (SAST), open-source dependencies (SCA), container images, and infrastructure as code. Integrates directly into IDEs, Git repositories, CI/CD pipelines, and container registries. Features AI-powered fix suggestions, license compliance checking, and real-time vulnerability database. Free for individual developers with paid plans for teams. Supports 30+ programming languages.

Open data platform wrapping any SQL database with instant APIs

Directus is a database-first open data platform that wraps any existing SQL database with instant REST and GraphQL APIs, a no-code admin dashboard, and built-in authentication. Unlike traditional headless CMS platforms that impose their own data model, Directus introspects your existing schema and works on top of it — supporting PostgreSQL, MySQL, SQLite, MS SQL, MariaDB, and CockroachDB out of the box.

Automate your workflow from GitHub

GitHub's built-in CI/CD and workflow automation platform that runs directly in your repository. Define workflows in YAML triggered by Git events (push, PR, release), schedules, or manual dispatch. Massive marketplace of 20,000+ community-maintained actions for testing, building, deploying, and automating tasks. Supports matrix builds, caching, secrets, environments with approval gates, and self-hosted runners. Free for public repos with generous minutes for private repos.

Instant cloud dev environments

GitHub Codespaces is a cloud-hosted development environment that spins up a full VS Code workspace in a dev container directly from any GitHub repo. Configurable via devcontainer.json, prebuilt for fast cold starts, and accessible through the browser or local VS Code. Used by teams that want zero-setup onboarding, consistent environments, and reproducible builds across platforms.

Open-source multi-model AI chat framework with plugin ecosystem

LobeChat is a source-available AI chat and agent workspace for OpenAI, Claude, Gemini, Ollama, DeepSeek, and Qwen. It includes RAG, 10,000+ MCP-compatible plugins, Agent Groups, TTS/STT, Vercel/Docker self-hosting, and 79K+ GitHub stars.

Official Python SDK for building MCP servers

The official Python SDK for the Model Context Protocol, enabling developers to build MCP servers and clients with asyncio support. Provides type-safe tool definitions, resource management, and all standard MCP transports. The most popular Python package for MCP development with comprehensive documentation.

Visual automation platform for complex workflows

Visual workflow automation platform formerly known as Integromat, built around a drag-and-drop canvas for complex multi-step workflows. Features routers for conditional branching, iterators for array processing, aggregators, webhooks, and HTTP modules for custom API calls. Best suited to power users and technical teams that need granular data transformation and workflow logic rather than only simple trigger-action automations.

Instant full-stack dev in browser

StackBlitz is a browser-based development environment powered by WebContainers — a WebAssembly micro-OS that runs Node.js natively inside the browser. Boot full-stack Next.js, Vite, Angular, or Astro apps in milliseconds with no remote VM, share live via URL, and embed interactive code examples in docs. Also the home of Bolt.new, StackBlitz's AI full-stack app builder.

Fastest AI code completion

Ultra-fast AI code completion tool with a 1M token context window — the largest among code assistants — enabling it to understand entire codebases for highly relevant suggestions. Runs a custom-trained model optimized for vendor-claimed ~250ms completions (roughly 3× faster). Supports VS Code, JetBrains, Neovim, and Zed. Free tier available with Pro at $10/month. Founded by the creator of Tabnine. Acquired by Cursor in late 2024 to power its autocomplete engine.

AI-driven task management for agentic coding

Taskmaster AI is an open-source task management system for AI-driven development that turns PRDs into structured, dependency-aware coding tasks. It runs as an MCP server inside Cursor, Claude Code, Windsurf, Lovable, and Roo, giving AI agents a disciplined workflow instead of ad-hoc code generation. Supports multiple AI providers with configurable main, research, and fallback models.

Open-source background jobs and AI workflows for TypeScript

Trigger.dev is an open-source platform for building and deploying background jobs, AI agents, and long-running workflows in TypeScript. It eliminates serverless timeouts with durable task execution, automatic retries, queue-based concurrency control, and elastic scaling. Used by 30,000+ developers at companies like MagicSchool and Icon.com, it processes hundreds of millions of agent runs monthly. Backed by a $16M Series A led by Dalton Caldwell's Standard Capital fund.

High-performance code editor built in Rust

High-performance code editor built entirely in Rust by the creators of Atom and Tree-sitter. GPU-accelerated rendering and a multicore architecture deliver 10x faster startup and 75% lower memory use than Electron editors like VS Code. Native real-time collaboration that works like Google Docs, deeply integrated AI with agentic editing (Claude and more), and Tree-sitter-powered syntax highlighting. Direct-to-display rendering on macOS. Available on macOS, Linux, and Windows.

AI assistant for code review, generation, and explanation

Bito is an AI-powered development platform combining a codebase intelligence engine with agentic code review capabilities. Its AI Architect maintains a live knowledge graph of your software system — mapping APIs, modules, and dependencies — and delivers that deep context to coding agents for more accurate suggestions. Bito solves the problem of AI tools producing generic feedback by grounding analysis in your specific codebase architecture.

API and browser monitoring as code

Checkly is an active reliability platform for developers and agents that combines Playwright browser checks, API checks, synthetic monitoring, monitoring-as-code, traces, status pages, alerts, and Rocky AI analysis. It helps teams run code-defined production checks from global and private locations instead of relying only on pre-deploy tests.

Self-hosted Heroku/Vercel alternative

Open-source, self-hostable PaaS alternative to Heroku, Vercel, and Netlify with 44K+ GitHub stars. Deploy static sites, APIs, full-stack apps, databases, and 280+ one-click services on your own VPS or bare metal via SSH. Features auto Let's Encrypt SSL, Git integration (GitHub/GitLab/Bitbucket/Gitea), S3 backups, Docker Swarm support, and a REST API for CI/CD automation. Self-hosted version is free forever with no features behind paywalls.

Automated code quality platform with AI autofix

DeepSource is a code quality, security, and AI review platform for repositories across GitHub, GitLab, Bitbucket, and Azure DevOps. It combines static analysis, SCA, coverage, license compliance, quality gates, Autofix, and AI Review. Team is listed at $24/user/month yearly; Open Source is limited to public repositories with 1,000 PR reviews/month, while AI Review/Autofix use credits or pay-as-you-go.

Real-time web search and retrieval via MCP

Exa MCP Server provides AI coding agents with real-time web search and content crawling capabilities through the Model Context Protocol. It leverages Exa's neural search API for semantic understanding of queries, returning clean, structured results with full page content extraction. Supports both remote hosted MCP endpoints and local client configurations.