Use FluxParser in proprietary software without GPL restrictions
For open-source projects
For small teams
For growing companies
For large organizations
| Feature | GPL-3.0 | Startup | Business | Enterprise |
|---|---|---|---|---|
| All Parser Features | ✅ | ✅ | ✅ | ✅ |
| Source Code Access | ✅ | ✅ | ✅ | ✅ |
| Use in Proprietary Software | ❌ | ✅ | ✅ | ✅ |
| Number of Developers | Unlimited | Up to 5 | Unlimited | Unlimited |
| Number of Products | Unlimited | 1 | Unlimited | Unlimited |
| Support Response Time | Community | 48 hours | 24 hours | 4 hours |
| Support Channel | GitHub Issues | Email + Slack | Dedicated | |
| Custom Features | ❌ | ❌ | ❌ | ✅ |
| Training & Onboarding | ❌ | ❌ | ❌ | ✅ |
| Source Code Escrow | ❌ | ❌ | ❌ | ✅ |
GPL-3.0 requires you to release your entire application's source code under GPL. Commercial license allows you to keep your code proprietary.
Yes! Use the free GPL version for evaluation. When ready for production deployment, purchase a commercial license.
You can continue using the version you have, but won't receive updates or support. Renew annually to continue receiving updates.
Yes! Contact us for perpetual licensing. Typically 5x the annual price with optional paid maintenance.
Absolutely! Contact us to upgrade from Startup to Business or Enterprise. We'll pro-rate the difference.
Yes! Multi-year discounts (10% for 2 years, 20% for 3 years), non-profit discounts (50%), and volume discounts for Enterprise.
Credit card, PayPal, bank transfer, and purchase orders for Enterprise customers.
30-day money-back guarantee, no questions asked. If you're not satisfied, we'll refund 100%.
"The only C parser with symbolic calculus. Saved us months of development time."
"Excellent performance and double precision was exactly what we needed for financial modeling."
"Support is fantastic. They helped us integrate in 2 days."
Choose the license that fits your needs
Questions? Email us at eduardostern@icloud.com