CycloneSSL Commercial License

For proprietary developments

CycloneSSL is available under 3 different commercial license categories for proprietary developments in a commercial context.


CycloneSSL Lite is a basic TLS library that supports TLS 1.0, 1.1, 1.2 protocols, with all relevant crypto algorithms included.


CycloneSSL Pro is a version of the TLS library that adds support for DTLS 1.0 and 1.2, GCM & CCM cipher modes and Elliptic Curve Cryptography (ECC).


CycloneSSL Ultimate is a full-featured TLS / DTLS library that supports TLS 1.3 and the most advanced cryptographic algorithms from Daniel J. Bernstein.

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Detailed feature breakdown
Choose the components that fit to your project!

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CycloneSSL Commercial Editions

PricingFrom €2,950
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Get a Quote
Contact us
Get a Quote
Non-GPL licensing for commercial use with closed source software
Perpetual license (one-time fee)
Royalty free
Delivery & Service
Source code & Doxygen documentation
Warranty & IP infringement protection
12-month Support & Update Agreement (technical support, software updates, update notifications, migration guide, bug & security fixing)
Basic TLS Features
Client and server mode operation, TLS 1.0, TLS 1.1 & TLS 1.2 support, SSL/TLS session resumption, Diffie-Hellman (DH) key agreement, DSA signature scheme, RSA key agreement, MD5, SHA-1 & SHA-256 hash algorithms, RC4 stream cipher, IDEA, DES, 3DES, AES, Camellia, SEED & ARIA block ciphers, X.509 certificate parsing, CRL & key parsing
Standard TLS Features & DTLS Support
DTLS 1.0 & DTLS 1.2 support, GCM & CCM ciphers modes (AEAD), Elliptic Curve Cryptography (ECC), ECDH key exchange, ECDSA signature scheme, PSK key exchange mechanism, Raw Public Keys (RPK)
Advanced TLS Features with TLS 1.3 Support
TLS 1.3 support, ChaCha20Poly1305 (AEAD), X25519 and X448 elliptic curves, EdDSA signature scheme (Ed25519 & Ed448), session tickets, early data (TLS 1.3)
ACME client (Automatic Certificate Management)

Hardware Crypto Acceleration
Secure Protocols
Secure sockets, FTPS client & server, HTTPS client & server, secure SMTP client, secure WebSocket client & server, secure MQTT client, secure MQTT-SN clients, secure CoAP client & server, secure Modbus/TCP client & server

Choose our Commercial License for:



If you develop proprietary commercial applications with closed source, use of a Commercial License is required.


Priority Support

You will have access to priority technical support with software maintenance for updates & security patches.



This license gives the right to develop and modify our software to embed it in your commercial products.


IP Protection

We guarantee that 100% of our commercial software packages have been developed in-house.


Custom Services

Our customers are entitled to fair pricing for custom connectivity related software development or expertise.



All our standard Commercial Licenses are royalty-free licenses (one-time license fee), making licensing easier.