87 of these 99 tools are free or have a free tier. Sub-categories: AI IDEs & Editors, Terminal & CLI Agents, Code Autocomplete & Assistants, App Builders & Vibe Coding, Autonomous Coding Agents, AI Code Review, AI Docs & Codebase Q&A, AI Testing & QA, AI DevOps & SRE, AI Database & SQL Copilots, Vector Databases & RAG Infra, AI Game Development. Open Code & Development in the app.
CursorFreemium AI-first VS Code fork with agent mode · Multi-file edits and terminal commands · Codebase-wide context and rules · Free tier with limited requests https://cursor.com/ · alternatives
Google AntigravityFreemium Google's agent-first IDE · Powered by Gemini 3 models · Autonomous multi-step coding · Free access tier https://antigravity.google/ · alternatives
WindsurfFreemium Agentic IDE with the Cascade flow · Now part of Cognition (Devin) · Deep whole-repo awareness · Free tier available https://windsurf.com/ · alternatives
ZedFreemium Blazing-fast, Rust-built editor · Agentic editing and prediction · Real-time collaboration · Free and open-source core https://zed.dev/ · alternatives
KiroFreemium AWS's spec-driven agentic IDE · Turns requirements into plans and code · Hooks and steering files · Free tier https://kiro.dev/ · alternatives
TraeFreemium ByteDance's free AI IDE · SOLO agent builder mode · Access to frontier models · Generous free usage https://www.trae.ai/ · alternatives
JetBrains JunieFreemium Autonomous coding agent embedded in JetBrains IDEs (IntelliJ, PyCharm, WebStorm) · Plans and executes multi-step coding tasks in-IDE · Deep integration with JetBrains code intelligence/refactoring https://www.jetbrains.com/junie/ · alternatives
Augment CodePaid Context Engine built for very large enterprise codebases · Team-pooled usage pricing rather than per-seat · CLI, IDE plugin and native tool integrations with SOC2/ISO42001 compliance https://www.augmentcode.com/ · alternatives
QoderFreemium Multi-agent collaboration IDE from Alibaba · Handles codebases up to 100,000 files with long-running agents (up to 26h) · Auto-generates repo wikis (400,000+ generated) https://qoder.com/ · alternatives
CodeBuddy (Tencent)Freemium Tencent Cloud's AI code editor plus plugins and CLI · Free plan with 100 base credits monthly and 5,000 completions · Promotional period currently allows all models and unlimited completions · International build available with multiple model providers https://www.codebuddy.ai/ · alternatives
Eclipse Theia IDEFree Open-source, vendor-neutral IDE with AI agents built on Theia AI · Bring your own API key or local model; no telemetry on code or prompts · Customisable agents and prompts, governed by the Eclipse Foundation https://theia-ide.org/ · alternatives
Claude CodePaid Terminal-native agent, best on large codebases · Top reasoning quality (Opus-class) · MCP tools, subagents and hooks · Included with Claude paid plans https://claude.com/claude-code · alternatives
OpenAI Codex CLIFreemium #1 on Terminal-Bench with GPT-5-series · Runs in terminal, IDE or the cloud · Sandboxed autonomous edits · Included with ChatGPT plans https://openai.com/codex/ · alternatives
Gemini CLIFree Open-source terminal agent from Google · Huge free daily model quota · Built-in tools and MCP support · Great value for everyday coding https://github.com/google-gemini/gemini-cli · alternatives
AiderFree Open-source AI pair programmer in your terminal · Git-aware commits and edits · Works with any model (bring your key) · Free to use https://aider.chat/ · alternatives
ClineFree Open-source autonomous coding agent for VS Code · Plan/Act modes with approvals · Bring your own API key or model · MCP tool support https://cline.bot/ · alternatives
OpenCodeFree Fully open-source terminal/IDE/desktop coding agent, MIT licensed · Bring-your-own model across 75+ providers, free models included · Parallel agent sessions with shareable session links https://opencode.ai/ · alternatives
CrushFree Terminal coding agent from Charm with LSP-aware context · Cross-platform incl. Android/BSD, MCP server support over HTTP/stdio/SSE · Agent Skills standard support for extensibility https://charm.land/crush · alternatives
GooseFree Open-source agent (now under Agentic AI Foundation/Linux Foundation) usable as CLI, desktop app or API · 70+ MCP extensions, 15+ LLM providers supported · Apache-2.0 licensed, built in Rust https://block.github.io/goose/ · alternatives
Qwen CodeFree Open-source terminal CLI adapted from Gemini CLI, tuned for Qwen3-Coder models · OpenAI-SDK compatible for flexible model backends · Free npm install, agentic coding workflows https://github.com/QwenLM/qwen-code · alternatives
AmpFreemium Multi-model routing across frontier models with no artificial usage caps · Four agent reasoning modes (low/medium/high/ultra) plus parallel subagents · Remote 'Orbs' execution machines and an Oracle deep-reasoning tool https://ampcode.com/ · alternatives
WarpFreemium Terminal rebuilt as an agentic development environment for any coding agent · Multi-agent orchestration with model routing and codebase indexing · Oz cloud agent platform for moving from local to cloud execution https://www.warp.dev/ · alternatives
GitHub Copilot CLIFreemium GitHub-native terminal agent that works directly with issues and PRs · /fleet command runs parallel subagents; /remote syncs sessions to VS Code and mobile · Included in all Copilot tiers incl. the free plan https://github.com/features/copilot/cli · alternatives
Kilo CodeFreemium Same open-source agent usable in VS Code, JetBrains, CLI and cloud from one account · Models billed at cost with no markup, bring-your-own-key supported · MIT-licensed with fully visible prompts and context windows https://kilo.ai/ · alternatives
Trae AgentFree Open-source CLI agent for general software-engineering tasks · Works with multiple LLM providers · Trajectory recording and tool ecosystem · Powers the agent behind ByteDance Trae https://github.com/bytedance/trae-agent · alternatives
FreebuffFreemium Terminal coding agent that needs no API key, subscription or card; funded by small text ads shown in the CLI · Daily allowance of 'Freebucks' spendable across several open models (DeepSeek V4.1 Flash, GLM 5.3 Flash, MiMo 2.6 and others) · Built-in sub-agents for file picking, code review and browser use on the open Codebuff framework · Freebuff Web builds and hosts full-stack apps at no charge https://freebuff.com/ · alternatives
Kimi Code CLIFree MIT-licensed terminal coding agent from Moonshot AI that edits files, runs shell commands and uses MCP · Log in with Kimi OAuth or plug in a Moonshot Open Platform API key or other compatible provider · Successor to the archived Python kimi-cli https://github.com/MoonshotAI/kimi-code · alternatives
Mistral VibeFree Apache-2.0 minimal terminal coding agent built around Devstral models · Devstral 2 was offered free on Mistral's API during launch; Experiment plan in Mistral Studio has free API usage · Reads, edits and runs commands across a project with conversational instructions https://github.com/mistralai/mistral-vibe · alternatives
GitHub CopilotFreemium The most widely used AI pair programmer · Free tier: 2,000 completions & chats/month · Agent mode and multi-model choice · Works across all major IDEs https://github.com/features/copilot · alternatives
Amazon Q DeveloperFreemium AWS-savvy coding assistant and agents · Security scanning and code transforms · Feature development from issues · Free tier available https://aws.amazon.com/q/developer/ · alternatives
TabnineFreemium Privacy-first completions (can run air-gapped) · Personalized to your code · Model choice and controls · Free Basic plan https://www.tabnine.com/ · alternatives
Sourcegraph CodyPaid Deep whole-codebase context · Chat, autocomplete and fixes · Great for large/legacy repos · Cody is now documented as supported on Sourcegraph Enterprise only; Free and Pro plans were retired. https://sourcegraph.com/cody · alternatives
ContinueFree Apache-2.0 open-source coding agent for VS Code, JetBrains and the CLI · Bring any model: cloud API keys or local models via Ollama · Custom rules, MCP tools and PR checks defined as code https://www.continue.dev/ · alternatives
TabbyFree Self-hosted AI coding assistant with completion and chat · Runs on your own hardware with open code models, no cloud dependency · IDE extensions for VS Code, JetBrains and Vim https://www.tabbyml.com/ · alternatives
LovableFreemium Prompt to full-stack app with clean React · Built-in Supabase and GitHub sync · Best all-round for SaaS MVPs · Free daily messages https://lovable.dev/ · alternatives
Bolt.newFreemium Prompt to a live full-stack app in the browser · Most framework flexibility · One-click hosting and deploy · Free daily tokens https://bolt.new/ · alternatives
v0 (Vercel)Freemium Beautiful Next.js apps and UI from prompts · Built-in databases and deploy to Vercel · Great component generation · Free monthly credits https://v0.app/ · alternatives
Replit AgentFreemium Most autonomous end-to-end app builder · Real-browser testing and 30+ integrations · Cloud IDE, hosting and databases · Free Starter plan https://replit.com/ · alternatives
Base44Freemium Zero-config: DB, auth and hosting handled · Fastest path for non-technical founders · All-in-one build-and-ship · Free tier to start https://base44.com/ · alternatives
Chef (Convex)Freemium AI app builder that generates a real transactional backend (Convex), not just a frontend · Free tier plus a low-cost hosted plan, with credits earned via milestones · Can run locally or in-browser, backend gets realtime subscriptions by default https://chef.convex.dev/ · alternatives
Anything (Create.xyz)Paid Builds mobile apps, sites and tools from natural language with 40+ integrations · Automated visual QA testing via computer-use agents on higher tiers · Paid plans only; there is no free plan. https://www.create.xyz/ · alternatives
RorkFreemium Purpose-built for native iOS/mobile app creation via chat, not just web apps · In-app iOS build/install/publish workflow plus auto-generated App Store screenshots · Direct App Store shipping and monetization path for indie builders https://rork.com/ · alternatives
a0.devFreemium Real-time AI agent that writes/edits a mobile app as you describe it · One-click publishing handles App Store Connect listing and upload · Built-in Convex/Supabase backend plus payments and analytics dashboard https://a0.dev/ · alternatives
TempoFreemium Positions as an 'AI software factory' aimed at product teams, not solo hobbyists · Generates production React apps from natural language specs · Team workflow features for PM/design/eng collaboration on generated apps https://www.tempo.new/ · alternatives
EmergentFreemium Conversational agents design, code AND deploy an app end-to-end in one flow · 1M-token context on Pro+ tiers for large app generation · Free tier with 10 monthly credits, no credit card required https://www.emergent.sh/ · alternatives
DyadFreemium Fully open-source, runs locally on your machine with offline capability · 21k+ GitHub stars, zero vendor lock-in with clean exportable code · Built-in security scanning for SQL injection/XSS in generated apps https://www.dyad.sh/ · alternatives
OnlookFreemium Visual drag-and-drop editor that writes directly into a real React/Next.js codebase · Open-source self-hosted version (25.8k GitHub stars) plus hosted cloud tier · Bridges design and dev with code as the source of truth, not a design-tool export https://onlook.com/ · alternatives
SubframeFreemium AI-native visual design tool where every layer maps to production Tailwind/Radix code · CLI sync tool pulls generated components straight into a codebase · Free tier (1 project, 10 pages) with no AI training on user designs https://www.subframe.com/ · alternatives
Google StitchFreemium Turns prompts, sketches and screenshots into high-fidelity UI screens and front-end code · AI-native canvas with a design agent, streaming generation and clickable prototypes · Exports to AI Studio, Antigravity, Figma or a Netlify publish · Free monthly generation allowance on a Google account https://stitch.withgoogle.com/ · alternatives
Amazon PartyRockFreemium Describe an app and PartyRock builds widgets chained to Amazon Bedrock foundation models · Free daily usage with no AWS account or credit card · Share and remix apps from a public catalog · Text, image and chat widgets https://partyrock.aws/ · alternatives
bolt.diyFree Community fork of Bolt.new that lets you pick any LLM provider · Prompt, run, edit and deploy full-stack apps in the browser · Self-hosted with Docker or Node https://github.com/stackblitz-labs/bolt.diy · alternatives
Cloudflare VibeSDKFree Open-source vibe coding platform you deploy to your own Cloudflare account · Generates and previews apps in sandboxes and deploys to Workers · Includes phased generation and templates https://github.com/cloudflare/vibesdk · alternatives
DevinPaid Most autonomous cloud coding agent · Own IDE, browser, terminal and shell · Plans, writes, tests and opens PRs · Now includes Windsurf's team https://devin.ai/ · alternatives
Google JulesFreemium Async coding agent that fixes issues & PRs · Runs in a cloud VM on your repo · Powered by Gemini · Free daily tasks https://jules.google/ · alternatives
FactoryPaid Enterprise 'Droids' across the whole SDLC · Delegate coding, review and migration · Terminal and cloud execution · Team and enterprise focus https://factory.ai/ · alternatives
OpenHandsFree Self-hosted control center for coding agents with GUI, CLI and SDK surfaces · Enterprise deployment controls over models, data access and auditability · MIT licensed, 83.9k GitHub stars, very active commit history https://www.openhands.dev/ · alternatives
mini-SWE-agentFree Roughly 100-line agent that solves GitHub issues or works in your command line · Bash-only, no special tools; works with any LM via API · From the Princeton/Stanford SWE-agent team https://github.com/SWE-agent/mini-swe-agent · alternatives
SWE-agentFree Takes a GitHub issue and tries to fix it automatically with your LM of choice · Research-grade agent-computer interface for repo edits · MIT-licensed https://swe-agent.com/ · alternatives
Open SWEFree Open-source asynchronous coding agent from LangChain · Works on tasks in the background and opens pull requests · Bring your own model https://github.com/langchain-ai/open-swe · alternatives
CodeRabbitFreemium Agentic AI reviews on PRs and CLI with automated one-click fix suggestions · Multi-repo analysis, SAST/linter integration, and MCP connections · Usage-based Slack review agent priced per agent-minute https://www.coderabbit.ai/ · alternatives
GreptileFreemium Free Starter tier with unlimited repositories for individual developers · Credit-based review pricing (1 credit = 1 standard review) · Deep codebase-context reviews (TREX) beyond diff-only analysis https://www.greptile.com/ · alternatives
Graphite DiamondPaid AI reviewer built into Graphite's stacked-PR workflow, not a bolt-on bot · Trained on merge-queue and review-history signal specific to fast-moving teams · Pairs with Graphite's PR stacking/merge-queue tooling for high-velocity teams https://graphite.com/diamond · alternatives
QodoTrial Context-aware agentic review across IDE, PR, CLI and Git workflows in one platform · Credit-pooled team pricing instead of rigid per-seat licensing · Originated as CodiumAI test-generation tool, now spans review + test generation https://www.qodo.ai/ · alternatives
CubicPaid Paid plans only; there is no free plan. · Runs thousands of background agents nightly to scan the whole codebase, not just diffs · Learns team standards from senior devs' past review comments https://cubic.dev/ · alternatives
PR-AgentFree Open-source AI reviewer that describes, reviews and suggests improvements on pull requests · Runs as a GitHub Action, CLI or self-hosted app with your own LLM key · Supports GitHub, GitLab, Bitbucket and Azure DevOps https://github.com/The-PR-Agent/pr-agent · alternatives
SourceryFreemium AI pull request reviews for GitHub and GitLab with summaries, bug findings and one-click fixes · Free for open-source projects · Does not keep code after review or train on it https://www.sourcery.ai/ · alternatives
MintlifyFreemium Docs platform built for both human readers and AI agent consumption · Self-updating knowledge base with 2B+ agent interactions/year at scale · Powers docs for 25% of the latest YC batch and 40% of the Forbes AI 50 https://mintlify.com/ · alternatives
DeepWikiFree Auto-generates conversational, up-to-date wikis for any public GitHub repo · Built by Cognition (Devin) — ask natural-language questions about a codebase's architecture · Free to browse/query indexed repos, integrates with Devin for private repo indexing https://deepwiki.com/ · alternatives
Context7Freemium MCP server that injects current, version-accurate library docs straight into AI coding agents' context · Solves the stale-training-data problem for framework/API docs in Cursor/Claude Code/Windsurf · Built by Upstash, free public usage with paid enterprise tier https://context7.com/ · alternatives
WeKnora (Tencent)Free Turns raw documents into a queryable RAG knowledge base with agent mode · Self-hostable with web UI and MCP · Supports multimodal documents and multiple retrieval strategies · Open-source from Tencent https://github.com/Tencent/WeKnora · alternatives
DeepWiki-OpenFree Open-source self-hostable wiki generator for GitHub, GitLab and Bitbucket repos · Chat with a repository using RAG and diagrams · Use OpenAI, Gemini, OpenRouter or local Ollama models https://github.com/AsyncFuncAI/deepwiki-open · alternatives
RepomixFree Packs an entire repository into one AI-friendly file · Token counting, security checks and compression options · CLI, web UI and MCP server https://repomix.com/ · alternatives
GitingestFree Swap 'hub' for 'ingest' in a GitHub URL to get a prompt-friendly repo digest · Free web app plus CLI and Python package · Open source https://gitingest.com/ · alternatives
MomenticFreemium Tests authored in plain English/YAML, no framework or selector maintenance needed · Self-healing tests with 8.9M+ auto-heals logged, distinguishes UI change from real regression · Runs web, iOS and Android tests in CI/CD with 96% signal-to-noise root cause analysis https://momentic.ai/ · alternatives
QA WolfPaid Hybrid platform-plus-service model: pay-as-you-go AI credits or full 'Coverage as a Service' · Mapping AI autonomously outlines an app's flows in minutes to seed test coverage · Generates and exports real open-source Playwright/Appium tests, no vendor lock-in https://www.qawolf.com/ · alternatives
KeployFreemium Open-source platform that generates API and integration tests from real traffic · Mocks dependencies automatically for isolated replays · Community edition free to self-host https://keploy.io/ · alternatives
ClericPaid Autonomous SRE agent investigates production alerts and delivers root cause analysis in ~5 minutes · Read-only-by-default with gradual write access and full audit logging for safety · Builds cross-team 'operational memory' from past incident resolutions https://cleric.ai/ · alternatives
incident.io AIPaid Nexus model reasons across telemetry, deployments, code and incident history simultaneously · Adversarial agents challenge their own root-cause hypothesis before surfacing it to responders · AI on-call intelligence filters alert noise and optimizes rotations to reduce burnout https://incident.io/ · alternatives
HolmesGPTFree Open-source SRE agent that investigates alerts and incidents across your observability stack · Connects to Prometheus, Kubernetes and logs via toolsets · CNCF Sandbox project; bring your own LLM https://holmesgpt.dev/ · alternatives
K8sGPTFree Scans Kubernetes clusters and explains issues in plain language · Pluggable analyzers and AI backends including local models · Apache-2.0 CLI and operator https://k8sgpt.ai/ · alternatives
Vanna AIFree Fully open-source text-to-SQL agent, self-hostable with no vendor lock-in · Multi-turn conversational querying across Postgres, Snowflake, BigQuery, MySQL, SQLite and more · Agent memory (hosted vector DB) that improves query accuracy over time https://www.vanna.ai/ · alternatives
Wren AIFreemium Open-core 'context engine' (public on GitHub) converts natural language to governed SQL across 20+ sources · Row/column-level security enforced at query time for agentic BI use · One-prompt GenBI dashboard creation plus MCP embedding for product integration https://getwren.ai/ · alternatives
OuterbaseFreemium AI-powered database GUI with natural-language 'EZQL' querying and auto chart generation · Spreadsheet-style table editor plus self-serve AI dashboards across 10+ database engines · Private AI models that don't train on customer data; recently joined Cloudflare https://outerbase.com/ · alternatives
Chat2DBFree Cross-platform database client with natural-language SQL generation and optimisation · Local-first workspace supporting many databases · Bring your own AI provider https://chat2db.ai/ · alternatives
QdrantFreemium Open-source Rust-based vector database, self-hostable for free with no scale limit · Managed free tier cluster (0.5 vCPU/1GB RAM/4GB disk) for prototyping RAG apps with no card required for OSS use · Hybrid Cloud option to run managed clusters on your own infrastructure for compliance-sensitive RAG https://qdrant.tech/ · alternatives
WeaviateFreemium Free managed cloud plan (100k objects, 1GB memory, 10GB disk) to explore without self-hosting · Open-source core project can be self-hosted for free indefinitely, same engine as the managed cloud · Built-in hybrid (vector + keyword) search and native embedding/query-agent integrations https://weaviate.io/ · alternatives
ChromaFreemium Fully open-source embedded/self-hosted vector store, the default choice bundled into countless RAG tutorials and frameworks · Chroma Cloud managed tier starts with free usage credits, no subscription · Simple Python/JS-native API designed to be the easiest on-ramp to RAG for developers https://www.trychroma.com/ · alternatives
Microsoft GraphRAGFree Builds knowledge graphs and community summaries from private text for RAG · Answers global, dataset-wide questions that vector RAG misses · Open-source Python library and CLI · Works with OpenAI-compatible and local models https://github.com/microsoft/graphrag · alternatives
MilvusFree Cloud-native Apache-2.0 vector database for large-scale similarity search · Runs from a single-file Lite mode to distributed clusters · Managed Zilliz Cloud has a separate free tier https://milvus.io/ · alternatives
LanceDBFree Embedded, developer-friendly retrieval library for multimodal AI · Columnar Lance format with vector and full-text search · Apache-2.0 https://lancedb.com/ · alternatives
pgvectorFree Open-source vector similarity search extension for Postgres · HNSW and IVFFlat indexes with exact and approximate search · Available on most managed Postgres hosts https://github.com/pgvector/pgvector · alternatives
PineconeFreemium Fully managed vector database with a free Starter plan · Starter includes about 2 GB storage and monthly read/write units · Serverless indexes with integrated inference https://www.pinecone.io/ · alternatives
VespaFree Open-source AI search platform combining vector, text and structured search · Real-time indexing and on-node ML inference · Apache-2.0; free to self-host https://vespa.ai/ · alternatives
txtaiFree All-in-one embeddings database for semantic search, LLM orchestration and workflows · Runs fully local with open models · Apache-2.0 https://neuml.github.io/txtai/ · alternatives
Rosebud AIFreemium Natural-language-to-playable-game engine (2D/3D) generating JS/Three.js/React code, playable directly in browser · 2.3M+ community-created games hosted on the platform · Built-in AI generator for sprites/textures alongside code generation https://www.rosebud.ai/ · alternatives
Inworld AIFreemium Character Engine SDK powering AI NPCs shipped in real titles from Krafton, Sony and Ubisoft (Neo NPC, GDC-demoed) · Multimodal NPCs with dialogue, gesture and action generation, not text-only chat · Partnerships with NVIDIA ACE, Xbox and Comcast NBCUniversal LIFT Labs https://inworld.ai/ · alternatives
ConvaiFreemium Mature Unity and Unreal Engine plugins for embodied conversational NPCs (sight, hearing, dialogue, gesture) · NVIDIA Inception startup collaborating on NVIDIA ACE for Games · Live in shipped experiences including Second Life and Stormgate https://convai.com/ · alternatives
Summer EngineFreemium Desktop game engine with AI assistance for 2D and 3D games using GDScript · Free desktop app with unlimited projects and no royalties · Exports to Windows and macOS, deploys to Steam and itch.io https://www.summerengine.com/ · alternatives
ScenarioFreemium Generative AI for game art, sprites and textures with consistent style · Free plan with 50 daily credits and no card required · Custom model training on paid tiers https://www.scenario.com/ · alternatives
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