Open source
Open source
worth running.
Free to use, but it takes a skilled engineer to run well. That is what Timofi does.
156 projects, all updated in the last six months. 113 are free for business use.
Agent skills and plugins
24Matt Pocock's Skills306k ★Proven engineering habits (planning, test-first, review) that make coding agents more reliable.Free for businessMITmattpocock/skillsAnthropic Skills185k ★Anthropic's official skills for Claude, such as Word, Excel, PDF and design work.Check the licensemixed per skill (Apache-2.0 and source-available)anthropics/skillsPonytail180k ★Makes coding agents write the least code that works, so changes stay small.Free for businessMITDietrichGebert/ponytailAgent Skills (Addy Osmani)112k ★Production-grade engineering practices packaged as skills for coding agents.Free for businessMITaddyosmani/agent-skillsHumanizer62k ★Removes the tell-tale signs of AI writing from drafts.Free for businessMITblader/humanizerI Have ADHD59k ★Makes coding agents lead with the answer and keep replies short.Free for businessMITayghri/i-have-adhdScientific Agent Skills55k ★Skills that turn an AI agent into a research assistant for science and data work.Free for businessMITK-Dense-AI/scientific-agent-skillsClaude Plugins Official45k ★Anthropic's directory of vetted Claude Code plugins, including security review.Free for businessApache-2.0anthropics/claude-plugins-officialClaude for Financial Services41k ★Claude agents and skills for finance work such as models, research and reports.Free for businessApache-2.0anthropics/financial-servicesSkills CLI37k ★A command-line tool for finding and installing agent skills.Free for businessMITvercel-labs/skillsBook to Skill36k ★Turns a technical book or manual PDF into a skill your agent can use.Free for businessMITvirgiliojr94/book-to-skillKnowledge Work Plugins34k ★Ready-made Claude plugins for sales, legal, finance and support teams.Free for businessApache-2.0anthropics/knowledge-work-pluginsVercel Agent Skills33k ★Vercel's skills for React, Next.js and web design best practices.Limits business useno license statedvercel-labs/agent-skillsClaude Skills (380)29k ★A library of 380 ready-made skills, agents and commands for Claude Code.Free for businessMITalirezarezvani/claude-skillsOpenAI Skills28k ★OpenAI's catalog of skills for Codex.Limits business useno license statedopenai/skillsCompound Engineering26k ★A plan, build and review workflow plugin for Claude Code, Codex and Cursor.Free for businessMITEveryInc/compound-engineering-pluginClaude Video19k ★Lets Claude watch a video by pulling its frames and transcript for review or summary.Free for businessMITbradautomates/claude-videoCursor Plugins15k ★Cursor's plugin format and official plugins.Limits business useno license statedcursor/pluginsAndroid Skills10k ★Google's skills that help AI agents build better Android apps.Free for businessApache-2.0android/skillsOpenAI Plugins7.6k ★OpenAI's official plugins for Codex.Limits business useno license statedopenai/pluginsHumanLayer Skills5.5k ★HumanLayer's published skills for coding agents.Free for businessMIThumanlayer/skillsGo Modern Guidelines3.9k ★Helps AI coding agents write modern, idiomatic Go.Free for businessApache-2.0JetBrains/go-modern-guidelinesSwiftUI Agent Skill3.8k ★Gives AI coding tools expert SwiftUI guidance for iPhone apps.Free for businessMITAvdLee/SwiftUI-Agent-SkillMaker Skills876 ★Skills for a solo operator: decisions, research, notes and content.Free for businessMITcoreyhaines31/makerskills
Coding tools
19ECC292k ★Skills, memory and security settings that tune a coding-agent setup.Free for businessMITaffaan-m/ECCOpenCode223k ★An open-source coding agent that works with any model.Free for businessMITanomalyco/opencodeNext.js143k ★The React framework for building web apps.Free for businessMITvercel/next.jsGraphify138k ★Turns a codebase and its docs into a knowledge graph you can query.Free for businessApache-2.0Graphify-Labs/graphifyCodex CLI132k ★OpenAI's coding agent for the terminal.Free for businessApache-2.0openai/codexMaterial UI99k ★Ready-made React components in Google's Material Design.Free for businessMITmui/material-uiScreenshot to Code81k ★Turns a screenshot into working front-end code.Free for businessMITabi/screenshot-to-codeDocusaurus67k ★Builds documentation websites from Markdown.Free for businessMITmeta/docusaurusOpen Code Review49k ★Alibaba's AI pull-request reviewer.Free for businessApache-2.0alibaba/open-code-reviewCodebase Memory MCP48k ★Gives agents a searchable map of your code, docs and infrastructure.Free for businessMITDeusData/codebase-memory-mcpDeepSeek Reasonix36k ★A low-cost coding agent tuned for DeepSeek models.Free for businessMITesengine/DeepSeek-ReasonixCodex Plugin for Claude Code35k ★Use Codex from inside Claude Code for code reviews or handoffs.Free for businessApache-2.0openai/codex-plugin-ccClaude Code Templates33k ★Ready-made agents, commands and settings for Claude Code, plus a usage monitor.Free for businessMITdavila7/claude-code-templatesT3 Code31k ★A desktop app for running and steering coding agents.Free for businessMITpingdotgg/t3codeDyad22k ★A local AI app builder, an open alternative to Lovable and Bolt.Check the licenseApache-2.0 + pro folderdyad-sh/dyadJCode21k ★A fast Rust harness for running many coding agents at once.Free for businessMIT1jehuang/jcodeOpenUI14k ★An open standard for AI that answers with interface components, not just text.Free for businessMITthesysdev/openuiWorktrunk9.6k ★Manages git worktrees so several agents can work in one repo at once.Free for businessMIT or Apache-2.0max-sixty/worktrunkRAD Debugger8.7k ★A fast native debugger for Windows programs.Free for businessMITEpicGames/raddebugger
Media and design
18MoneyPrinterTurbo136k ★Generates short videos from a topic or keyword.Free for businessMITharry0703/MoneyPrinterTurboExcalidraw135k ★A whiteboard for hand-drawn style diagrams.Free for businessMITexcalidraw/excalidrawImpeccable94k ★Design vocabulary and review commands that help agents polish interfaces.Free for businessApache-2.0pbakaus/impeccableArchify91k ★Turns an idea, plan or codebase into an interactive diagram.Free for businessApache-2.0tt-a1i/archifyOBS Studio79k ★Live streaming and screen recording.Check the licenseGPL-2.0obsproject/obs-studioHyperFrames75k ★Turns HTML into video, built for agents.Free for businessApache-2.0heygen-com/hyperframesRemotion69k ★Make videos with React code.Limits business useRemotion License (paid for companies over 3 people)remotion-dev/remotionDiagram Design63k ★Clean, on-brand diagrams made by your coding agent.Free for businessMITcathrynlavery/diagram-designPenpot62k ★An open design platform, an alternative to Figma.Free for businessMPL-2.0penpot/penpotUpscayl51k ★Upscales images with AI.Check the licenseAGPL-3.0upscayl/upscaylHallmark42k ★A design skill that stops AI-built pages from looking generic.Free for businessMITNutlope/hallmarkInvokeAI29k ★A studio for generating and editing images with open models.Free for businessApache-2.0invoke-ai/InvokeAIPascal Editor25k ★Design buildings in 3D in the browser, with tools agents can use.Free for businessMITpascalorg/editorCap24k ★An open alternative to Loom for screen recordings.Check the licenseAGPL-3.0 + MIT partsCapSoftware/CapText to CAD24k ★Designs 3D-printable parts from a text prompt.Free for businessMITearthtojake/text-to-cadACE-Step 1.514k ★Generates music locally, for videos and ads.Free for businessMITace-step/ACE-Step-1.5OpenShorts7.3k ★Cuts long videos into vertical shorts.Free for businessMITmutonby/openshortsKdenlive6k ★A free video editor.Check the licenseGPL-3.0KDE/kdenlive
AI models and token savings
14Caveman116k ★Cuts coding-agent token use by making its replies terse.Free for businessApache-2.0JuliusBrussee/cavemanRTK85k ★A command-line proxy that cuts the tokens common dev commands send to the model.Free for businessApache-2.0rtk-ai/rtkOmniRoute82k ★One endpoint that routes AI calls across hundreds of model providers, many of them free.Free for businessMITcheaper-inference/OmniRouteHeadroom78k ★Compresses logs, files and tool output before they reach the model.Free for businessApache-2.0headroomlabs-ai/headroomFree LLM API44k ★One API in front of dozens of free AI model providers to cut model costs.Free for businessMITtashfeenahmed/freellmapiAirLLM41k ★Runs very large open models on a small GPU.Free for businessApache-2.0lyogavin/airllmContext Mode33k ★Keeps bulky tool output out of a coding agent's context window.Limits business useElastic License 2.0mksglu/context-modeModular (MAX and Mojo)30k ★Fast serving for open AI models, plus the Mojo language.Check the licenseApache-2.0 (Mojo) + MAX Licensemodular/modularNeedle14k ★A tiny on-device AI model for tool calls, speech and data extraction.Free for businessApache-2.0cactus-compute/needleODS7.7k ★Turns a PC, Mac or Linux box into a private AI server.Free for businessApache-2.0Osmantic/ODSPX Pipe7.6k ★Cuts Claude Code token use by sending long text as images.Free for businessMITteamchong/pxpipeSwitchyard3.5k ★Routes an app's AI traffic across models and providers.Free for businessApache-2.0NVIDIA-NeMo/SwitchyardBillion Context3.3k ★Compresses context so one coding session can run for weeks.Free for businessMITranxianglei/billion-contextToken Optimizer MCP563 ★Measures and trims the tokens each coding agent uses.Free for businessMITooples/token-optimizer-mcp
AI agents and orchestration
13Hermes Agent258k ★A self-hosted AI assistant that learns your workflows and runs tasks for you.Free for businessMITNousResearch/hermes-agentOrca110k ★Run a fleet of coding agents side by side from one app.Free for businessMITstablyai/orcaPaperclip108k ★Assign work to AI agents, watch their progress and manage them like a team.Free for businessMITpaperclipai/paperclipOdysseus95k ★A self-hosted AI workspace for a team's chats, agents and files.Check the licenseAGPL-3.0odysseus-dev/odysseusRuflo80k ★Coordinate teams of AI agents that split up and finish large coding jobs.Free for businessMITruvnet/rufloOpenManus59k ★An open alternative to Manus: a general agent that plans and carries out multi-step tasks.Free for businessMITFoundationAgents/OpenManusBuzz37k ★A self-hosted Slack-style workspace where people and AI agents share the same channels.Free for businessApache-2.0block/buzzOpenWork24k ★An open alternative to Claude Cowork that works with 50+ AI models.Check the licenseopen core + ee folderdifferent-ai/openworkOctop11k ★A self-hosted AI assistant shared by many users and agents.Free for businessMITTencentCloud/OctopOpenRig8.3k ★Build standing teams of Claude Code, Codex and Pi agents with set roles.Free for businessApache-2.0mvschwarz/openrigRakazo6.2k ★An open alternative to Grok Bot where you choose the model and the sandbox.Free for businessApache-2.0elie222/rakazoApache Maka5.9k ★An agent workspace that keeps a full record of what every agent did.Free for businessApache-2.0apache/makaChannels SDK949 ★Put your own AI agent into Slack, Microsoft Teams or Discord.Free for businessMITCopilotKit/channels-sdk
Automation and web data
11Firecrawl197k ★Turns websites into clean data for AI: crawl, search and monitor.Check the licenseAGPL-3.0firecrawl/firecrawlBrowser Use119k ★Lets an AI agent drive a real web browser.Free for businessMITbrowser-use/browser-useAgent Reach106k ★Lets an agent read and search X, Reddit, YouTube, GitHub and more.Free for businessMITPanniantong/Agent-ReachScrapling90k ★A web scraping framework, from a single page to large crawls.Free for businessBSD-3-ClauseD4Vinci/ScraplingLast 30 Days66k ★Researches what people said about a topic in the last 30 days across social sites.Free for businessMITmvanhorn/last30days-skillCLI-Anything58k ★Gives AI agents a command line for desktop apps.Free for businessApache-2.0HKUDS/CLI-AnythingAgent Browser45k ★A command-line browser that coding agents can drive.Free for businessApache-2.0vercel-labs/agent-browserVane38k ★A self-hosted answer engine like Perplexity that searches the web and cites sources.Free for businessMITItzCrazyKns/VaneOfficeCLI33k ★Lets agents read, edit and automate Word, Excel and PowerPoint files.Free for businessApache-2.0iOfficeAI/OfficeCLICamoufox13k ★A stealth Firefox for scraping sites that block bots.Free for businessMPL-2.0daijro/camoufoxDesktop Commander10k ★Lets Claude run terminal commands and edit files on your computer.Free for businessMITwonderwhy-er/DesktopCommanderMCP
Business apps
10AppFlowy78k ★An open alternative to Notion for projects, wikis and docs.Check the licenseAGPL-3.0AppFlowy-IO/AppFlowyTwenty60k ★An open alternative to Salesforce, built for AI.Check the licenseAGPL-3.0 + commercial filestwentyhq/twentyCal.diy50k ★Self-hosted booking pages, an alternative to Calendly.Free for businessMITcalcom/cal.diyNextcloud37k ★Self-hosted file sharing and collaboration, like Google Drive.Check the licenseAGPL-3.0nextcloud/serverDocumenso16k ★An open alternative to DocuSign for e-signatures.Check the licenseAGPL-3.0documenso/documensoLanguageTool15k ★A grammar and style checker for 25+ languages.Free for businessLGPL-2.1languagetool-org/languagetoolPlanka13k ★Self-hosted Kanban boards, like Trello.Limits business usePLANKA Community Licenseplankanban/plankaInvoice Ninja10k ★Invoices, quotes, projects and payments for small businesses.Limits business useElastic License 2.0invoiceninja/invoiceninjaFrappe CRM3.9k ★A full open-source CRM for sales teams.Check the licenseAGPL-3.0frappe/crmSlowBooks Pro828 ★Bookkeeping that AI agents can work in, an alternative to QuickBooks.Limits business usesource-availableVonHoltenCodes/SlowBooks-Pro-2026
Agent memory and knowledge
8Claude Mem104k ★Keeps an agent's memory across sessions so it does not start from zero.Free for businessApache-2.0thedotmack/claude-memHindsight56k ★Long-term memory for agents that improves as they work.Free for businessMITvectorize-io/hindsightOpenViking41k ★One database for agent memory, document search and skills.Check the licenseAGPL-3.0volcengine/OpenVikingWeKnora36k ★Turns company documents into a searchable knowledge base agents can answer from.Free for businessMITTencent/WeKnoraTencentDB Agent Memory30k ★A team-wide memory hub that turns chats, docs and code into facts agents can use.Free for businessMITTencentCloud/TencentDB-Agent-MemoryAI Memory14k ★Shared memory and handoff between different coding agents and machines.Free for businessMITakitaonrails/ai-memorySemantica14k ★Graph infrastructure that tracks context and decisions for accountable AI systems.Free for businessMITsemantica-agi/semanticaBasic Memory4.4k ★Keeps what you tell your AI as plain notes, so you never re-explain a project.Check the licenseAGPL-3.0basicmachines-co/basic-memory
Sales and marketing
8Ghost56k ★Publishing, newsletters and paid memberships in one platform.Free for businessMITTryGhost/GhostPostiz40k ★Schedules social media posts, with AI agents to help.Check the licenseAGPL-3.0gitroomhq/postiz-appOpenSEO26k ★An open alternative to Semrush and Ahrefs for SEO research.Free for businessMITevery-app/open-seoDub25k ★Short links with click and conversion tracking.Check the licenseAGPL-3.0 + ee folderdubinc/dub.linklistmonk24k ★Self-hosted newsletters and mailing lists.Check the licenseAGPL-3.0knadh/listmonkMautic11k ★Marketing automation: email campaigns, forms and lead scoring.Check the licenseGPL-3.0mautic/mauticNewsjack1.7k ★Skills that turn an agent into a PR team that pitches news stories.Free for businessMITelvisun/newsjackMailcheap1.5k ★Newsletters priced by emails sent, an alternative to Beehiiv.Check the licenseAGPL-3.0marclou/mailcheap
Learning and reference
7Public APIs493k ★A list of free public APIs to build on.Free for businessMITpublic-apis/public-apisSystem Design Primer376k ★The standard guide to designing large software systems.Free for businessCC BY 4.0donnemartin/system-design-primerAI Engineering from Scratch75k ★A hands-on course for learning AI engineering.Free for businessMITrohitg00/ai-engineering-from-scratchAI for Beginners70k ★Microsoft's free 12-week AI course.Free for businessMITmicrosoft/AI-For-BeginnersMiniMind65k ★Train a small language model in two hours to learn how LLMs work.Free for businessApache-2.0jingyaogong/minimindAwesome Claude Code57k ★A curated list of the best Claude Code tools and resources.Limits business useCC BY-NC-ND 4.0hesreallyhim/awesome-claude-codeOpenMAIC42k ★Turns course material into an interactive class led by AI tutors.Free for businessMITTHU-MAIC/OpenMAIC
Security
7REA (Reverse Engineer Anything)405k ★Has agents work out how an app or binary works, for audits and rebuilds.Free for businessMITmorluto/reaGhidra96k ★The NSA's tool for studying how compiled software works.Free for businessApache-2.0NationalSecurityAgency/ghidraVaultwarden70k ★A self-hosted password manager server that works with the Bitwarden apps.Check the licenseAGPL-3.0dani-garcia/vaultwardenauthentik26k ★Single sign-on and user accounts for your apps.Check the licenseMIT core + enterprise foldergoauthentik/authentikSkillSpector23k ★Scans agent skills for malicious code and prompt injection before you install them.Free for businessApache-2.0NVIDIA/SkillSpectorVeraCrypt12k ★Encrypts disks and drives.Check the licenseApache-2.0 + TrueCrypt License 3.0veracrypt/VeraCryptKubescape12k ★Finds security problems in Kubernetes setups.Free for businessApache-2.0kubescape/kubescape
Data and analytics
5World Monitor90k ★A live dashboard of world news and risks, summarized by AI.Check the licenseAGPL-3.0koala73/worldmonitorPostHog41k ★Product analytics, session replay, feature flags and experiments.Check the licenseMIT core + ee folderPostHog/posthogUmami40k ★Privacy-first website analytics, an alternative to Google Analytics.Free for businessMITumami-software/umamiTimesFM35k ★Google's model for forecasting sales, demand and other numbers over time.Free for businessApache-2.0google-research/timesfmUnlimited OCR30k ★Reads long PDFs and scanned documents into text.Free for businessMITbaidu/Unlimited-OCR
Customer inbox and support
4Chatwoot39k ★An open alternative to Intercom and Zendesk: live chat, email and social messages in one inbox.Check the licenseMIT core + enterprise folderchatwoot/chatwootInbox Zero13k ★An AI email assistant that sorts, drafts replies and clears your inbox.Check the licenseAGPL-3.0elie222/inbox-zeroTypebot11k ★Build and self-host chatbots for your website and WhatsApp.Limits business useFSL-1.1 (fair source)baptisteArno/typebot.ioGOWA (WhatsApp API)5k ★A WhatsApp API with webhooks that plugs into Chatwoot and agents (unofficial, uses WhatsApp Web).Free for businessMITaldinokemal/go-whatsapp-web-multidevice
Infrastructure
4RustDesk127k ★Self-hosted remote desktop, an alternative to TeamViewer.Check the licenseAGPL-3.0rustdesk/rustdeskTailscale38k ★A private network between your machines with no open ports.Free for businessBSD-3-Clausetailscale/tailscaleOpenship15k ★A self-hosted platform for deploying apps.Free for businessApache-2.0oblien/openshipCube Sandbox13k ★Fast, isolated sandboxes for running AI agents safely.Free for businessApache-2.0TencentCloud/CubeSandbox
Voice and meetings
4VoiceStudio94k ★Local voice cloning and voice design, an alternative to ElevenLabs.Check the licenseAGPL-3.0debpalash/VoiceStudioVoicebox59k ★An AI voice studio for cloning voices, dictation and audio.Free for businessMITjamiepine/voiceboxMeetily32k ★Private AI meeting notes, an alternative to Granola and Otter.Free for businessMITZackriya-Solutions/meetilyFluidVoice13k ★Fast on-device dictation for the Mac.Check the licenseGPL-3.0altic-dev/FluidVoice
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