Free and self-hostable
The best open-source tools GTM teams actually run, plus the AI skills and plugins that do the work. Every link goes straight to the repo. We do not host or endorse; we point you to what the community backs.
15 self-hostable tools, from social scheduling to CRM to analytics.
Postiz lets you plan, generate, and schedule posts across 30+ social networks from a visual calendar with built-in AI content generation. It supports self-hosting with Docker and offers a managed cloud option, making it a drop-in replacement for Buffer or Hootsuite.
Twenty provides the building blocks of a modern CRM (custom objects, views, workflows, and AI agents) with a polished React/TypeScript frontend and GraphQL API. You can self-host on your own infrastructure or use their managed cloud with zero ops.
Cal.diy is the community edition of Cal.com, providing a full scheduling engine with booking pages, app-store integrations, and workflow automation. It is self-hostable via Docker or Kubernetes with full API access for custom booking flows.
Chatwoot unifies live chat, email, WhatsApp, Instagram, and other social channels into a single shared inbox with AI-powered responses and agent collaboration. It is self-hostable with Docker or available as a managed cloud.
Novu provides a unified API to send transactional emails, SMS, push, and in-app notifications with template management, digest workflows, and provider routing. It supports self-hosting via Docker or a managed cloud.
Umami tracks traffic, campaigns, behavior, conversions, and revenue in one place without cookies or surveillance. It deploys as a single Docker container with a modern dashboard and multi-site support.
PostHog combines product analytics, session replay, feature flags, A/B testing, surveys, and a data warehouse in a single self-hostable platform. It now includes AI observability tools for monitoring LLM-powered features.
Dub provides link shortening, QR codes, analytics, and UTM attribution with a polished dashboard and API. It supports custom domains, edge-side redirects for speed, and webhook integrations for marketing automation.
Listmonk is a standalone binary that handles subscriber management, campaign scheduling, templating, and analytics for email newsletters and transactional mail. It supports high-throughput sending via SMTP relays or direct delivery.
Documenso provides legally binding e-signature workflows with audit trails, templates, and team management. It is self-hostable with Docker or available as a managed cloud with a modern React frontend.
Formbricks lets you create targeted surveys (NPS, CSAT, onboarding, churn) with multi-channel distribution (in-app, email, link, website widget) and real-time analytics. It is self-hostable or available as managed cloud.
Mautic provides email marketing, lead scoring, campaign orchestration, landing pages, and contact segmentation in a single self-hosted PHP application. It integrates with CRM systems and supports multi-channel campaign automation.
Typebot provides a visual drag-and-drop builder for creating conversational forms, lead qualification flows, and chatbots that embed anywhere on web or mobile. It supports conditional logic, integrations, and result collection.
Trigger.dev lets you build, schedule, and monitor long-running background jobs and AI agent workflows with built-in retries, logging, and dashboard observability. It deploys self-hosted via Docker or runs on their managed cloud.
Plausible provides simple, cookie-free web analytics with a clean dashboard showing pageviews, bounce rate, traffic sources, and conversions. It deploys as a single Docker container with a sub-1KB script.
12 AI skills and plugins for design, SEO, CRM, content, and outbound. Run the security check in repo-forensics before you install any of them.
Taste Skill ships 13 portable agent skills that give AI coding agents (Claude Code, Cursor, Codex) genuine design taste through design dials, aesthetic variants, and a pre-flight check that catches AI slop. It enforces locks and bans on common AI design anti-patterns and infers the right design direction from a brief.
Impeccable provides a comprehensive design vocabulary for AI agents covering visual hierarchy, typography, color, motion, spacing, and UX copy. It works with Cursor, Claude Code, GitHub Copilot, Gemini CLI, and Codex CLI, and can install an automatic design hook that intercepts UI generation.
Marketing Skills is the most popular marketing skill collection for AI agents, covering conversion rate optimization, copywriting, SEO audits, analytics setup, cold email writing, and growth experiments. Each skill is a self-contained instruction file that gives Claude deep domain knowledge for a specific marketing task.
Claude SEO runs full technical SEO audits with 50+ checkpoints, covering E-E-A-T, schema markup, GEO/AEO (generative engine optimization), backlinks, local SEO, maps intelligence, and semantic clustering. It orchestrates 18 sub-agents in parallel for comprehensive site analysis.
OpenSEO provides keyword research, SERP analysis, rank tracking, backlink analysis, and site audit tooling that connects to any AI agent (Claude Code, OpenClaw, Hermes). It ships pre-built skills that install into your agent's skill directory for automated SEO workflows.
Claude Ads provides source-grounded audit and optimization skills for paid media across Google Ads, Meta, YouTube, LinkedIn, TikTok, Microsoft, Apple, Amazon, Reddit, Pinterest, Snapchat, and X. It covers campaign structure, targeting, creative, budgets, and performance analysis.
Claude Blog writes, optimizes, audits, localizes, and refreshes blog content at scale with a 5-gate Blog Delivery Contract for quality. Every article is dual-optimized for Google rankings and AI citations (GEO/AEO), with built-in evaluation against SEO and readability criteria.
HubSpot Admin Skills provides API-first, safety-obsessed skills for CRM hygiene: standardizing deal pipelines, removing test deals, backfilling geographic data, ICP tiering, lead scoring, and contact enrichment. Each skill is a self-contained workflow that calls the HubSpot API via MCP.
Cold Outbound Skills grades cold email campaigns, exports Prospeo searches, and scrapes Google Maps for local business leads, all from within Claude Code. It provides structured workflows for list building, email writing, and campaign quality scoring.
GTM Agents covers sales, marketing, customer success, and revenue operations workflows with specialized agent skills for each function. It provides structured playbooks for prospecting, enrichment, deal management, and churn prevention.
ColdIQ GTM Skills provides 6 master skills (43 sub-skills) plus 31 standalone skills for signal-based outbound, ICP definition, Clay enrichment workflows, and personalized email generation. It includes pre-built playbooks for common GTM scenarios like in-market detection and churn rescue.
Bora Oztunc Skills provides deep-domain-knowledge skill files for copywriting, advertising strategy, SEO optimization, and design critique. Each skill is a standalone markdown file that gives Claude specialized instructions for a specific creative or marketing task.