10 Best Offline Open Source CRM Software Solutions for 2025

Building a happy customer relationship works as the backbone of your business. If your customers are not thankful to you, then there is something wrong. In order to make them happy and manage your customer affairs successfully, it is important to deploy the best offline open-source CRM software solution. These tools not only save you time but also cut your expenditures by half. Your energy is saved to focus on other important affairs of your business rather than being occupied with the management of customer information and their queries.

An open-source CRM allows you to customize it fully to meet your specific business requirements. You can change the roles, permissions, dashboard layout, fields and forms, modules, tools, charts, reports, integration settings, and even theme and languages. This means you are in full control and can amend the CRM to fulfill all your business needs according to your own specific requirements. This great freedom of an open-source CRM significantly and visibly improves your business growth, working efficiency, and productivity to achieve higher goals. 

Table of Contents
What Does Offline Open-Source CRM Mean?
1. Group-Office
2. SuiteCRM
3. EspoCRM
4. X2CRM
5. CiviCRM
6. Odoo CRM
7. Zurmo CRM
8. Vtiger CRM
9. YetiForce CRM
10. OroCRM
Why Offline Open-Source CRM Software Is a Smart Choice
How to Choose the Right CRM
Comparison Table: Best Offline Open-Source CRM Software
Conclusion

What Does Offline Open-Source CRM Mean?

Some people may ask what offline open-source CRM software really means. Offline means the program works without an internet connection. The data stays stored safely on a phone, tablet, or computer. When the internet comes back, the software can update and sync the changes.

Open-source means that the code is not hidden. Anyone can look at it, study it, and even change it. That makes it very flexible. People who use open-source software can make it fit their business better. They are not locked into someone else’s system. Combining these two ideas means having software that works anywhere and can grow as needed. It is a strong choice for teams who want more control.

1. Group-Office

Group-Office is a tool that helps people keep their work in order. It is an open-source CRM and groupware application made by a company called Intermesh. This tool lets users send emails, plan their calendars, share files, and manage customer details. These features make daily tasks easier. Many teams use it because they can stay organized all in one place. It has a clean layout that is simple to follow. Many people who try it learn how to use it without any trouble.

The special part about Group-Office is how it works without the internet. It is a PC-based CRM with offline access, which means people can still use it even when there is no connection. The data they enter will sync when the internet returns. Group-Office is also built in a way that allows changes. This lets people add the parts they need and leave out the parts they do not. It fits many types of teams, big or small. People can trust it to help them get more done. It is a smart choice for anyone who wants strong control and simple tools that work well together.

2. SuiteCRM

SuiteCRM is known around the world. It is powerful, and it works well without being online all the time. The mobile version lets users access and change customer data while offline. It updates when the connection comes back.

People like SuiteCRM because it is flexible. It can be changed in many ways. That makes it one of the best open-source CRM with offline access for many different kinds of companies. It helps with marketing, sales, and support. The open-source community around SuiteCRM is large. They keep the software safe, stable, and full of helpful features. People who choose SuiteCRM usually stay with it for a long time.

3. EspoCRM

EspoCRM has a nice look and is easy to understand. Even people who are new to CRM tools can start using them quickly. It works offline and on mobile, which makes it good for teams that move around a lot.

This tool supports sales tracking, task management, and email integration. Its smart design makes it very useful for everyday business. For companies that want customizable offline CRM solutions, EspoCRM is a smart choice. Many people like EspoCRM because it is not full of confusing features. It keeps things simple. At the same time, it can still be changed to do more when needed. That balance makes it special.

4. X2CRM

X2CRM helps with both sales and marketing. It works offline, which means it can still be used when the internet goes down. It saves the data and syncs it later.

This tool focuses a lot on safety. It uses strong rules and keeps data private. Companies that need a secure offline CRM software option often turn to X2CRM. Besides safety, it also does a good job with CRM automation. It helps users save time by automatically doing some tasks. People can follow leads, send emails, and close deals with less effort.

5. CiviCRM

CiviCRM is different because it was made for nonprofits. It helps manage events, members, donations, and messages. It can also be used offline, which is helpful during community events or fieldwork.

Since it is open-source, it can be changed to fit very special needs. That makes it a strong offline CRM software for nonprofits. Many groups around the world use CiviCRM to stay organized and help more people. Its interface is simple. People do not need to be tech experts to use it. That is important for small teams or volunteers who have other tasks.

6. Odoo CRM

Odoo CRM is part of a large system that includes many tools. The CRM part helps with sales and leads. It works offline on mobile devices. People can enter and update customer details without the internet.

Odoo is open-source, which means it can be shaped to fit different needs. Companies use it for more than just CRM. It also includes tools for inventory, billing, and websites. That makes it useful for those who want offline CRM tools for sales teams that also handle other tasks. Odoo’s design is modern and it also gets updates often. That keeps it fresh and safe.

7. Zurmo CRM

Zurmo CRM is fun to use. It adds game-like features to help users stay interested. Points and badges can be earned for finishing tasks. This CRM works offline with mobile apps. It saves changes and updates them later. That is why it is seen as a good open-source CRM with a mobile offline mode. It helps people stay productive anywhere.

The look of Zurmo is clean and not confusing. Even new users can learn quickly. Teams can focus more on work and less on how to use the tool.

8. Vtiger CRM

Vtiger CRM is full of features. It works offline through its desktop app. This helps teams who do not always have internet access. All data is saved locally and synced once the connection is back.

Vtiger supports many tasks, like handling leads and helping customers. It is a helpful choice for companies looking for offline-first secure CRM software for field agents who travel a lot. It also connects well with other tools. People can send emails, make phone calls, and track progress all in one place.

9. YetiForce CRM

YetiForce CRM is getting more popular. It has many useful parts, such as project tracking, email tools, and sales reports. The offline mode works on both desktop and mobile.

It can be changed to fit any business. The interface is bright and clear. That makes it one of the top offline CRM platforms with data sync. All work done offline is saved and sent once the internet is back. Many businesses choose YetiForce because it works well without spending a lot of money. It fits small teams and larger companies too.

10. OroCRM

OroCRM works well for bigger companies. It supports many tasks like email campaigns, lead tracking, and customer groups. The desktop and mobile apps work even when offline.

This tool is an element of a smart CRM strategy that integrates well for teams that need open-source control with strong tools. It is especially good for online stores. That is why it ranks as a top open-source CRM software for remote work. Its design focuses on helping people find and follow customers. Teams can manage online and offline sales together.

Why Offline Open-Source CRM Software Is a Smart Choice

Many places still have slow or spotty internet. That can stop work from getting done. With offline CRM software, that is no longer a problem. People can keep working and update their data later. Open-source software also gives people more control. They can make it look and work the way they like. No need to wait for someone else to add a feature.

These tools also keep data safer. Since the information is saved on the device, it is less likely to be hacked or lost. That means peace of mind for companies and customers. Costs are also better. Open-source tools are often free or low-cost. There are no big bills each month. This helps smaller companies grow without spending too much.

How to Choose the Right CRM

Picking the best CRM depends on what the business needs. Some things to think about:

• Does the tool really work offline?
• Can the software be changed or added to later?
• Is it easy for the team to learn?
• Does it protect data and privacy?
• Will it work with the other tools already being used?

Trying a demo or test version can help. This lets users see how the software fits their daily work.

Comparison Table: Best Offline Open-Source CRM Software

CRM Tool	Best For	Offline Access	Customization	User Interface	Special Feature
Group-Office	Team planning and communication	Yes	High	Simple and clean	Built-in email, calendar, and file sharing
SuiteCRM	Full sales and service workflows	Yes (mobile)	Very High	Moderate	Strong community and long-term support
EspoCRM	Small business customer management	Yes (mobile)	High	Clean and intuitive	Lightweight and fast setup
X2CRM	Sales and marketing automation	Yes	Moderate to High	Business-focused	Visual workflows and strong data privacy
CiviCRM	Nonprofits and event management	Yes	Very High	Basic but clear	Donation, membership, and event tracking
Odoo CRM	Broad business tools and integration	Yes (mobile)	Very High	Modern and polished	All-in-one suite with sales, inventory, and more
Zurmo CRM	Teams needing motivation and engagement	Yes (mobile)	Moderate	Game-like and simple	Gamification with points and badges
Vtiger CRM	Lead and support tracking for field teams	Yes (desktop)	High	User-friendly	Local data storage with sync and multi-tool linking
YetiForce CRM	Custom business tracking and reports	Yes	Very High	Bright and functional	Built-in tools for projects, emails, and reporting
OroCRM	E-commerce and multi-channel marketing	Yes (desktop/mobile)	High	Sales-centered	Customer segmentation and lead tracking

Conclusion

Offline open-source CRM software is very useful in 2025. It helps teams stay organized, even when there is no internet connection. That makes it a strong choice for businesses that work in the field, travel often, or operate in areas where the internet is slow or limited. If you are looking for a full-scale CRM, then go for DejaOffice. These tools allow workers to keep track of customers, update notes, and manage schedules without delays. Since everything can be stored directly on a device, the team does not need to stop working just because the signal is lost. This brings a sense of freedom and helps everyone stay focused on their tasks. Companies can also trust that their information will remain safe and protected when it is stored locally.

All of the tools listed above are strong choices for businesses that want more control and flexibility. Each one can work offline and can be adjusted to fit different needs. Some are better for sales teams, while others help nonprofits or remote workers. Choosing the best option depends on the size of the team, the kind of work being done, and how much customization is needed. It is helpful to try a demo or test version to make sure the software feels right. With the right on-premise CRM, teams can work faster, communicate better, and reduce stress. A good CRM makes it easier to serve customers, complete tasks on time, and help the business grow in a stable way, even when the internet is not available.