open-source-gtm

A community directory of public repos for GTM teams and GTM engineers.

This list covers products, agent skills, libraries, templates, and learning resources for sales, marketing, RevOps, customer success, and growth workflows.

Inclusion bar:

• Every entry has a public repo.
• Software sections require a verified OSI-approved license.
• Mixed-license, fair-code, and source-available tools are separated under Source-available.
• Content sections also require a verified license from the repo itself.
• Archived or clearly unmaintained repos are excluded.

Contents

• Products
• Agent Skills
• Libraries, CLIs & Tools
• Templates & Playbooks
• Learning & Curated Lists
• Source-available
• Contributing

Products

CRM & Sales

• Frappe CRM - Open CRM for leads, contacts, pipelines, and account workflows.
• SuiteCRM - Self-hosted CRM for sales, service, and marketing operations.
• EspoCRM - CRM for accounts, contacts, deals, and workflow automation.
• Krayin CRM - Laravel CRM for lead, pipeline, contact, and follow-up management.
• IDURAR ERP CRM - ERP and CRM app for sales, invoicing, and customer workflows.
• Dolibarr - ERP and CRM for contacts, quotes, orders, invoicing, and small-team operations.
• Odoo - Business suite with CRM, pipeline, quoting, and sales apps.
• OroCRM - CRM application for sales teams, accounts, and customer data.
• metasfresh - Open ERP with CRM, quoting, orders, and inventory workflows.
• iDempiere - Community ERP and CRM suite for sales, finance, and operations.
• ADempiere - ERP and CRM suite maintained as an open community project.
• ERPNext - ERP with CRM, quoting, sales, and service modules.

Marketing & Email

• Mautic - Marketing automation for campaigns, forms, segments, and email journeys.
• Listmonk - Newsletter and mailing list manager for self-hosted campaigns.
• Dittofeed - Customer messaging automation across email, SMS, push, WhatsApp, and Slack.
• Mailtrain - Self-hosted newsletter platform for campaign sending and subscriber lists.
• BillionMail - Self-hosted email marketing and newsletter stack.

Analytics & Product Data

• Matomo - Web and product analytics with self-hosted reporting and privacy controls.
• Umami - Privacy-focused web analytics with self-hosted dashboards and event tracking.
• Rybbit - Self-hosted web analytics alternative to Google Analytics.
• OpenPanel - Product and web analytics for event tracking and self-hosted dashboards.
• Multiwoven - Reverse ETL for syncing warehouse data back into GTM tools.
• Jitsu - Segment-style event pipeline for routing customer and product data.
• Zingg - Identity resolution and deduplication for customer data.

Outreach & Engagement

• Cal.com - Scheduling infrastructure for booking demos, handoffs, and meetings.
• HeyForm - Form builder for lead capture, surveys, and onboarding flows.
• Greenware - Website form lead routing for Clay-powered backends.

Customer Success & Support

• Zammad - Helpdesk system for tickets, agents, and support inboxes.
• FreeScout - Shared inbox and help desk for email-based customer support.
• LibreDesk - Omnichannel support desk with live chat and email in one binary.
• GOFLY Live Chat - Self-hosted live chat for website support conversations.

Agent Skills

• Codebound - Skill for standing up a GTM engineering stack on Vercel.
• AI Marketing Skills - Marketing skills for growth experiments, pipeline work, outbound, SEO, and content ops.
• Aaron Marketing Skills - Marketing skill library for SEO, paid, email, launch, and brand workflows.
• Claude SEO - Claude skill pack for technical SEO, schema, GEO, local SEO, and reporting.
• Claude Ads - Claude skill pack for paid ads audits and optimization across major ad platforms.
• Marketing Skills - Marketing skills for Claude Code and AI agents covering CRO, copywriting, SEO, analytics, and growth engineering.
• GTM Cheat Codes - Installable GTM skills for campaign planning, CRM context, and proof workflows.
• Apollo Operator - Claude Code skill system for Apollo outbound targeting, list building, sequences, deliverability, and iteration.
• Cold Outbound Skills - Claude Code skills for cold email strategy, infrastructure, list building, copy, sending, and campaign iteration.
• Rudder Agent Skills - Agent skills for tracking plans, transformations, profiles, and RudderStack operations.
• OpenDirectory - Marketing-focused agent skills for founders running GTM work themselves.

Libraries, CLIs & Tools

• Rowbound - CLI and MCP server for Google Sheets enrichment workflows.
• Wedge - Chrome extension for sending data into Clay.
• Mold - Webhook bridge for chaining Clay tables.
• Stockpile - Enrichment cache for GTM data workflows.
• gtm-pipeline - Runtime for turning campaign briefs into qualified, enriched, sequencer-ready contact lists.
• Meltano - Code-first ELT engine for feeding GTM warehouses and reporting stacks.
• Apache Superset - BI dashboards for pipeline, funnel, and revenue reporting.
• SurveyJS - Form and survey library for lead capture and feedback flows.

Templates & Playbooks

• n8n Marketing Flows - Importable n8n workflows for social, ads, SEO, and news monitoring.
• n8n Automation Templates 5000 - Large collection of n8n workflows covering CRM, marketing, and outreach.
• Responsive HTML Email Template - Minimal starter template for campaign emails.
• Colorlib Email Templates - HTML email template pack for newsletters and promotional sends.
• GTM Starter Kit - Claude Code starter repository with GTM context templates, skills, workflows, and sample campaign outputs.
• Context OS - Quickstart for building AI-readable knowledge systems for GTM, product, and research workflows.

Learning & Curated Lists

• Learn GTM Engineering - Learning resources for GTM engineering.
• Awesome GTM Engineering - Curated GTM engineering resources.
• Awesome Marketing - Curated marketing tools and resources.
• Awesome Digital Marketing - Curated digital marketing guides, tools, and resources.
• Awesome Customer Success - Curated customer success and customer intelligence resources.
• Awesome Opensource Email - Curated open source email resources.

Source-available

• Twenty - CRM alternative to Salesforce and HubSpot. AGPLv3 with commercial enterprise files.
• Vtiger CRM - CRM for leads, pipeline, contacts, and support workflows. Sugar Public License 1.1.2.
• Formbricks - Survey and feedback platform. Mixed AGPLv3, MIT, and enterprise modules.
• Chatwoot - Omnichannel support desk. MIT core with an enterprise directory.
• Activepieces - Workflow automation platform. MIT core with enterprise packages.
• PostHog - Product analytics, feature flags, surveys, and CDP. MIT core with an ee/ directory.
• GrowthBook - Feature flags, experimentation, and analytics. MIT core with the GrowthBook Enterprise License.
• OpenReplay - Session replay and product analytics. Mixed AGPLv3, MIT, and ee/ code.
• Airbyte - ELT and connector platform. Elastic License 2.0.
• n8n - Workflow automation with AI and integrations. Sustainable Use License.
• Snowplow - Customer data infrastructure for behavioral event streams. Snowplow Limited Use License Agreement.
• RudderStack - Customer data pipeline and Segment alternative. Elastic License 2.0.
• Countly - Analytics and engagement platform. Countly Lite License.
• Metabase - BI and embedded analytics. AGPL core with the Metabase Commercial License.
• Laudspeaker - Customer engagement and onboarding platform. AGPLv3 core with an ee/ directory.
• Message Decision Packs - CLI and agent plugin for GTM message decision and context packs. Elastic License 2.0.
• GTM Developer Tools Knowledge Graph - Interactive map of GTM developer tools. README-stated MIT viewer with underlying data and methodology attributed to adamgtm.com.
• Team OS Example Repo - Example team knowledge base for AI-assisted product and growth work. CC BY-NC 4.0.

Contributing

See CONTRIBUTING.md.