Lesli Ecosystem

Lesli is designed to be modular. It uses standard Ruby on Rails engines (we call them modules) to extend and customize functionality, making it easy to build powerful, tailored applications on top of the Lesli framework.

The Lesli team maintains several production-ready engines, most of which are open source. These modules cover a wide range of common use cases and can be seamlessly integrated into your application to accelerate development.


Collections

A Collection is a group of modules organized by category or business industry. Collections help you quickly identify modules relevant to specific areas of your SaaS application.

Available Collections:

  1. Administration
  2. Sales & Marketing
  3. Productivity & Teamwork
  4. Finance
  5. Analytics
  6. Intelligence
  7. IT & Help Desk
  8. Security & Privacy
  9. Integrations


Modules

Currently, we have 45 modules planned for development. Out of these, 9 modules are fully developed and production-ready.

Code Module Description
0101 LesliAdmin Lesli administration area
0301 LesliCalendar Unified calendar app
0305 LesliLetter Notes & notebooks
0306 LesliDashboard Smart business assistant
0308 LesliBell Notification system
0502 LesliAudit System analytics
0702 LesliSupport Support ticket system
0801 LesliShield Authentication & authorization module for Lesli
0901 LesliBabel Translation management

You can also create your own custom modules. We will cover this process later in the documentation.

Lesli Ecosystem Diagram (Overview)

+--------------------------------------------------+
|                     Lesli                        |
|        (Core Gem: Utilities, Generators)         |
+--------------------------------------------------+
                     /       \
                    /         \
         +----------------+  +------------------+
         |Official Modules|  |   Your Modules   |
         | (Rails Engines)|  | (Custom Engines) |
         +----------------+  +------------------+
                   |                    |
                   |                    |
     +-------------------------------------------+
     |         Integrated via Rails Engine       |
     +-------------------------------------------+
                   |
        +----------------------------+
        |Your SaaS Application (Host)|
        +----------------------------+
                   |
          +------------------+
          |  PostgreSQL / DB |
          +------------------+

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Last Update: 2025/07/15