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Open Source Event Management Software (2026)
Last updated: February 2026
7 software options
Sponsored
Eventcombo
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
A versatile in-person & online event management software
Please contact Eventcombo directly for customized pricing options based on small, medium, large packages.
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Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
All-in-one open-source business software
Odoo offers flexible pricing plans to accommodate various business needs. The One App Free plan allows one app and unlimited users for free. The Standard plan starts at $31.10 per user per month (billed annually) and offers all apps. The Custom plan starts at $61.00 per user per month (billed annually) and includes Odoo Studio, Multi-Company, and an External API.
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Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open-source AMS for NGOs and the association's market
*No long-term contracts. No per User pricing. No per Admin pricing. No additional Processing Fees. Free open source software code is on GitHub. Unlimited contacts, supports large organizations 15,000+ members. Tendenci is the strongest and most secure web-based software platform for NPO’s globally. *Monthly hosting charges are based on the amount of processing power you need to efficiently manage your membership. This is a monthly charge with no long-term contracts. *YOUR website! That is the power of Open Source. *There is a one-time development charge to set up your Tendenci site based on the graphical and customization requests from your organization. *Training is provided as part of the initial development charge. Use our free online support to find answers to your questions or contact our Helpdesk for hourly paid support and development. *Demo the software now for free!
Read more about Tendenci
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Live event ticket management application
Pricing starts of $500 per business, per month. Custom plans are available from Agile Ticketing.
Read more about Agile Ticketing
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open source CRM for nonprofit and civic sector
the basic plan is $10, the standard is $25, and the pro plan is $50 a month, with each one sequentially suited for larger organizations.
Read more about CiviCRM
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Scheduling & business management for event professionals
Contact Oz Software for detailed pricing information. Oz is also avail for purchase unlocked.
Read more about Oz Software
We provide bespoke pricing based on individual client requirements
Read more about VenuePro