wolfSSL (formerly CyaSSL)

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Very High Activity

Analyzed 3 days ago. based on code collected 3 days ago.

Project Summary

wolfSSL is a lightweight SSL/TLS implementation (up to TLS 1.2 and DTLS 1.2) for software developers building security functionality into their applications and devices. It is optimized for resource-constrained environments and can be up to 20x smaller than OpenSSL.

wolfSSL is ported to a long list of environments, including Win/Linux/Mac, Solaris, ThreadX, VxWorks, FreeBSD, NetBSD, OpenBSD, embedded Linux, WinCE, Haiku, OpenWRT, iOS, Android, Nintendo Wii and Gamecube through DevKitPro, QNX, MontaVista, OpenCL, NonStop, TRON/ITRON/µITRON, µC/OS, FreeRTOS, MQX, Nucleus, and more.

wolfSSL includes hardware cryptography support for several platforms including Intel AES-NI, Cavium NITROX, Microchip PIC32MZ, Freescale mmCAU/CAU, and Texas Instruments.

Tags

3des aes authentication c cross_platform cryptography dual_license embedded encryption gpl library network networking portable public_key rsa security ssl tls x509

In a Nutshell, wolfSSL (formerly CyaSSL)...

...
has had 28,288 commits made by 220 contributors
representing 2,351,352 lines of code
...
is mostly written in C
with an average number of source code comments
...
has a well established, mature codebase
maintained by a very large development team
with stable Y-O-Y commits
...
took an estimated 686 years of effort (COCOMO model)
starting with its first commit in February, 2011
ending with its most recent commit 4 days ago

Quick Reference

Homepage
Community
Documentation ( 3 Links )
Download
Forums ( 2 Links )
Issue Trackers

Code Locations:

https://github.com/wolfSSL/wolfssl

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Licenses

Commercial License

Permitted

Commercial Use

Forbidden

Required

These details are provided for information only. No information here is legal advice and should not be used as such.

GNU General Public License v2.0 or later

Permitted

Commercial Use

Modify

Distribute

Place Warranty

Forbidden

Sub-License

Hold Liable

Required

Distribute Original

Disclose Source

Include Copyright

State Changes

Include License

These details are provided for information only. No information here is legal advice and should not be used as such.

All Licenses

Project Security

Vulnerabilities per Version ( last 10 releases )

Project Vulnerability Report

Security Confidence Index

Poor security track-record

Favorable security track-record

Vulnerability Exposure Index

Many reported vulnerabilities

Few reported vulnerabilities

About Project Vulnerability Report

Did You Know...

...
use of OSS increased in 65% of companies in 2016
...
data presented on the Open Hub is available through our API
...
55% of companies leverage OSS for production infrastructure
...
compare projects before you chose one to use

About Project Security

Code

Lines of Code

Activity

Commits per Month

Community

Contributors per Month

Languages

C	72%
Assembly	19%
22 Other	9%

30 Day Summary

Feb 16 2026 — Mar 18 2026

566 Commits
31 Contributors

12 Month Summary

Mar 18 2025 — Mar 18 2026

3452 Commits
Up + 555 (19%) from previous 12 months
66 Contributors
Up + 5 (8%) from previous 12 months

Most Recent Contributors

	Kareem		JacobBarthelmeh
	David Garske		Anthony Hu
	...usz Sosinowicz		Daniel Pouzzner

Ratings

2 users rate this project:

5.0/5.0

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Static Analysis ( Generated by Coverity Scan for wolfSSL/wolfssl )

Repository URL: https://github.com/wolfSSL/wolfssl

Version: 668d69b73a6952bc9daf81d6fd74890bc52cff05

2026-03-18
Last Analyzed

747,596
Lines of Code Analyze

0.02
Defect Density

Defects by status for current build

2,160
Total defects

16
Outstanding

2,015
Fixed

CWE Top 25 defects

No top 25 CWE defects were found.