11 Best Open Source Insightly Alternatives in 2026

1

Twenty

Self-hostable modern CRM with fully customizable data models.

Twenty is a CRM for technical teams with customizable data models, no-code workflows, and an MCP server, positioned as an alternative to Salesforce and HubSpot. It is mostly AGPL-3.0, with some files under a commercial license. It can be self-hosted or used as a managed cloud.

Pricing: Free self-hosted; cloud from $9 per user per month.

• Custom data models and no-code workflows
• MCP server and AI support
• Large and active community
• Some files are under a commercial license
• Self-hosting requires maintenance

2

Krayin CRM

Laravel-based open-source CRM for sales teams.

Krayin is an open-source Laravel CRM with lead tracking, deal management, sales forecasting, marketing automation, VoIP and live chat integrations, and analytics, suited to B2B and real estate teams.

Pricing: Free and open source; paid extensions and support.

• Lead and deal tracking with forecasting
• MIT license
• Laravel stack that is easy to extend
• Fewer modern AI features
• Some extensions are paid

3

CRM (trycompai)

AI-powered CRM with agents that automate data entry.

CRM is an open-source AI CRM that reads team inboxes to create contact and company records automatically, enriches them with industry data and logos, schedules its own follow-ups, and builds new workflows from natural-language descriptions, with Slack integration. It is built with Next.js and designed to be customized and self-hosted, for example on Vercel.

Pricing: Free and open source.

• Inbox-driven record creation and company enrichment
• Agent builder from plain-language descriptions
• MIT license
• Young project aimed at developers who customize it
• Depends on AI services for its agents

4

Macro

All-in-one workspace with a keyboard-driven email client.

Macro is an AGPL-3.0 all-in-one workspace that unifies email, messages, docs, tasks, AI agents, and a CRM in one fast interface. Its email client offers a multi-account unified inbox, keyboard shortcuts, and shared inboxes, and it can be self-hosted. Email is one part of a larger product, so it is heavier than a plain mail app.

Pricing: Open source under AGPL-3.0 with self-hosting available; hosted and commercial services may be offered separately.

• Markdown-native collaborative documents
• Tasks, communication, document properties, and AI agents in one workspace
• Self-hosting supported
• Younger ecosystem than Notion
• Broader workspace approach may be unnecessary for simple note-taking

5

Erxes

All-in-one growth platform for marketing, sales, and support.

Erxes unifies marketing, sales, and customer service in one platform with a 360-degree customer view, customizable workflows, and automation. The core is AGPL-3.0, enterprise plugins are under a separate license, and hosting it as a competing SaaS is not permitted.

Pricing: Free self-hosted; enterprise features and hosted plans are paid.

• Marketing, sales, and support in one
• Customizable workflows
• Self-hostable
• Enterprise plugins under a separate license
• Hosting it as a competing SaaS is not allowed

6

Bigcapital

Accounting software with multi-currency and inventory.

Bigcapital is accounting software for bookkeeping, real-time reports, multi-currency transactions, inventory management, expense tracking, and customizable invoicing with collaboration features. It is open source under AGPL, can be self-hosted with Docker, and has a hosted Bigcapital Cloud.

Pricing: Free self-hosted; paid hosted cloud plans.

• Bookkeeping, multi-currency, and inventory
• Self-hosting with Docker
• Collaboration and real-time reports
• Smaller ecosystem than QuickBooks
• Self-hosting requires maintenance

7

Frappe CRM

Simple customizable CRM from the Frappe team.

Frappe CRM manages contacts, deals, and customer relationships with email and call integration, customizable workflows, automation, reporting, and ERPNext integration, with no per-user pricing.

Pricing: Free and open source; Frappe Cloud hosting is paid.

• Simple, modern interface
• Integrates with ERPNext
• Customizable workflows and automation
• Younger than the full ERPNext ecosystem
• AGPL-3.0 license

8

EspoCRM

Mature open-source CRM for contacts, accounts, and opportunities.

EspoCRM manages contacts, companies, projects, and opportunities with sales pipelines, flexible deployment, customizable workflows, and an intuitive interface, either self-hosted or in the cloud.

Pricing: Free self-hosted; paid cloud hosting and extensions.

• Mature and refined
• Flexible deployment and customization
• Active development
• Interface looks more traditional than Attio
• Some extensions are paid

9

Relaticle

Self-hosted CRM with a built-in AI assistant and MCP tools.

Relaticle is a self-hosted CRM with an AI chat assistant, an MCP server with 37 tools for external agents, custom fields, role-based permissions, a REST API, and voice input, with no per-seat pricing.

Pricing: Free and open source.

• Native AI assistant and 37 MCP tools
• Custom fields, roles, and REST API
• No per-seat pricing
• Young project
• AGPL-3.0 license

10

Atomic CRM

Open-source toolkit for building a customized CRM.

Atomic CRM is a developer toolkit from Marmelab for building a custom CRM, with contact organization, task management, a Kanban board, email-to-note conversion, and API integration, built with React, TypeScript, Supabase, and Postgres.

Pricing: Free and open source.

• Fully customizable code base
• Modern React, TypeScript, and Supabase stack
• MIT license
• Requires development work
• Not a turnkey product

11

Warpdrive

Self-hosted pipeline CRM for business development teams.

Warpdrive is a self-hosted CRM for business development with a drag-and-drop pipeline board, a deal workspace combining activities and communications, contacts and organizations with custom fields, and two-way Gmail. It runs with Docker Compose on Next.js, TypeScript, and PostgreSQL, and deliberately excludes invoicing and workflow automation.

Pricing: Free and open source.

• Focused pipeline and deal workspace
• Two-way Gmail with thread linking
• No per-seat fees, full data control
• Very small and new project
• No invoicing or workflow automation